View Full Version : Differential Equations
- 2nd order differential equation
- Intro. to Differential Equations
- differential equations
- help with power series solution
- partial differentials
- Spring Damping
- Use of curl of gradient of scalar
- Laplace Transforms
- I can't do these diff. eqns.
- differentiating mult-variable equation
- True application of Diff Eq
- Vector Differential Equation
- second differential equations
- System of PDEs...
- sytem of diff eq
- Solve this ODE
- Can Anybody Solve This Equation ??
- Non-Linear ODE’s
- Deriving the heat equation
- Numerical RK4 integrator help
- Diff eq
- Functional Differential Eqn.
- Finding solutions to equations of motion
- Stochastic Partial Differential Equation Averaging.
- Lagrangian method for equation of motion
- Differentiate y=x sinx cosx
- "outer" differentiation ?
- how do i differentiate this?
- Please help!
- About Feynman-Kac equivalence between PDE and SDE
- Nonlinear system of differential equations
- A variational problem...
- Solving the Wave Eqt Using Fourier Series- please help!
- A tricky differential equation
- Radio Filter Problem
- help
- Differential Equations book
- help with reduction method.
- Inhomogeneous Initial, Boundary Value Theorem Proof
- Percetange of lefties in mathematics?
- What is the solution of this?
- Why is there no symbol for partial integration?
- How do I determine the interval of existance of a DE?
- Bit hazy on reduction of order
- help with problem
- Numerical solutions to differential equations
- challenging integrals and derivatives to try
- Taylor Series
- Planck's law of radiation??
- All separable equations are exact?
- solving a 2nd order DE
- Laplace transform: where am I messing up?
- Taylor series prob
- Linear transformations?
- Blasius numerical solution?
- How do you solve this differential equation?
- Inverse Laplace Transformation Problem
- Show that reaction-diffusion PDE is linear
- word problem
- spring problem stuck
- 3rd order nonlinear ODE
- Shooting method
- I need help asap
- Laplace
- Laplace little differet one
- Two ODE proofs
- Fourier Series of sin (pi*t)
- Enquiry
- ? - infinitely differentiable solutions to initial value problems
- Question Regarding Initial Conditions.
- laplace last one please check
- Help needed!
- Need Serious Help
- plz help me this Inverse Laplace Transformation question
- Laplace Transformation help~
- DE: x*(2x-y)*y'=y^2+(x-6)*y+9x
- need this DE paper
- Laplacian in Spherical Shell
- 1D wave equation with gravity
- Inverse Laplace Transform
- What is the solution of this? 2nd part
- Troublesome Equation
- Which method for this DE?
- Proof need helps
- laplace
- im stuck
- confusing
- 2^x derivitive
- Euler method
- Help me please!!!!!!!
- Quick implicit diff. question
- Finding if a solution exists
- Please Help i am stumped
- solving a partial DE
- Slope fields
- Only a Mathematician Can Solve This Equation
- Helmholtz Equation in a Square
- Fourier Sine Transform
- Power series solution for 1st-order ODE
- More power series: 2nd-order ODE
- 2nd order DE, is there a way to solve this without series?
- Nullclines
- Convolution Method
- partial diff eq
- Am looking for minimum...
- System of Differential equations with a singular coefficient matrix, help?
- 2nd Order DE - Power series
- Continuity equation question
- Deceptively Difficult Physics Integration Problem (Restorative Forces)?
- Do you know?
- Good book on PDE
- SHM Calculus Twister
- 2nd order coupled non-linear DE's
- Heat equation in a sphere surface
- Help for Schrodinger's Equation
- the wave equation
- Partial Differential Equation
- Green inverse problem in Differential equation...
- An Adequate Proof?
- solution to 2nd O.D.E. using power seris
- 3rd order non-linear differential eqn
- laplace limits
- Navier-Stokes
- phase spaces
- Fourier coefficient
- Having trouble with Laplace Transform for DiffEQ
- Green's functions solution to Poisson's eqn (or something similar)
- Working on Constructing Equations
- A challenge Question on Inverse Laplace...
- integration by parts
- How does differential equation work?
- How to solve this 2nd differential eq?
- integration by parts
- Rotor
- u-du or parts
- Developing equation for specific wave
- exact de’s
- Having a hard time with 2 implicit equations
- [MUST READ] This forum is not for homework or any textbook-style questions.
- Reducing to First-Order Equation
- Does Homogeneous = Separable?
- Is there an easy trick to this (getting into form)
- Homogeneous equation
- Problem on Inverse Laplace with Unit Step
- Need Equation/graphing help
- coffee and milk :) (cooling/heating problem)
- Green's function expansion in a set of eigenfunction
- solution to the exact differential equation
- Finite Element Method?
- heat equation
- DE Identifying/Solving Homo/Bernoullis/Exact/etc
- How to use matrices to solve systems of ODEs?
- Problem with an IVP
- is this theorem true?
- Material Differential-Equation
- Apparently this 2nd-order ODE has 3 solutions??
- Ploting zero order Bessel function..
- Can you solve this equation?
- wave eqn with initial functions odd
- Could use a little advice here, with a 2nd order ODE
- solve Uxx-3Uxt-4Utt=0 (hyperbolic)
- This should be a simple problem to solve but im just not getting it...
- classify this diff eq
- PDEs and shock waves
- Areas and distances
- Laplace Transform
- Predator vs. prey -- trouble
- Applications Of differential Equations In Physics
- solving differential equation with laplace transform
- Reducing 2nd order to 1st order type question
- Integration
- Boundary Value Problem
- General Solutions of 2nd Order Linear Homogeneous Ordinary D.E.s
- Logistics
- Homework question
- Multiphysics PDE solvers with solution dependent domains
- Heat Propagation
- Differential Homework Questions
- Related Rates
- Puzzling paradox
- Numerical resolution of 2nd order non-linear differential equation
- Textbooks
- Theory of ODE
- Runge Kutta 4: problems in application in computer simulation
- Hard diff-eq
- How do you find the general solution of differential equations?
- Messed up my TI-89 somehow, don't want to reset, any suggests for {}??
- crazy optimization/Lagrange questino
- Help with Initial Value Problems
- Ok, need a little help in a couple of areas (2nd order w/forcing terms)
- Quick Harmonic Motion problem (got most of it solved)
- Second Order ODE
- need help with nonlinear 2nd order DE
- nonlinear coupled differential equation
- integration problem
- A Tricky Problem
- Torricelli's theorem
- Solutions of D.E - Bessel Function
- Meaning of the Differential
- Solving by seperation of variables.
- Lost on eigenvalues
- Homework help with mixture problem
- ropewalk equations
- Need some help with nonlinear integration
- Meshfree & EFG methods
- An Exact Equation
- System of differential equations - a big problem solving it
- velocity of the solution of a diff. eq.
- Linear DE help.
- Sturm Liouville and Self Adjoint ODEs
- A Competing Species Model
- Coupled First order PDEs
- A few problems with the operator method.....
- Heaviside????? HELP
- Unique solutions
- Attracting Heteroclinic Cycles.
- Limes for an unknown solution
- A differential equation
- Euler Equation please help
- differential equation
- Tangent Problem..Its givin me a really really bad headache
- Convolution Laplace Transform
- Applying Initial Conditions
- What is a differential equation and what use do they have?
- Linear ODE Systems in Numerical Methods.
- System Help
- linear ode with variable coefficient
- Non Linear 4th order ODE
- Euler's method
- Best Books for Ordinary Differential Equations
- Need Help - Exact Integrating Factor?
- ::sigh:: What now?
- Laplace Transform Help
- Anyone can answer my question, please help
- Diff-Eq Prep
- PDE in H^-1
- Length Integral Problem
- Falling Bodies with air resitance
- Separation of Variables
- understanding differential equations "backwards"
- Lineary DE in Kinematics
- differentiation of fractional and negative powers
- Question on integration
- ODE trouble
- Quick question
- differentiation
- Frobenius method with imaginary powers
- Helping out a friend..or at least trying to
- Symmetry Analysis of Partial Differential Equations
- symplectic runge kutta for hamiltonian system
- wave equation for a string
- Indicial equation to Legendre's equation
- Another question dealing with Frobenius method
- Action of Laplacian Operator
- inexact/exact differentials
- What's the difference between initial conditions and boundary conditions?
- Having the Hardest Time
- Problem with Complex Second Order Equations
- Easy way to demonstrate the accuracy of Euler's Method
- Green,s inverse problem...
- An integral equation
- Problem with an ODE
- The Abel equation
- Dynamical systems proof - nonwandering set
- greens function
- Help me with Linear equation pls ~
- An open ended ODE problem
- Hadamard regularization in BIE
- Inverse Rotation Function Question...
- Can someone help me?
- Solution for the Differential Equation
- Eigenvalue problem
- Wronskian problem
- Parabolic problems
- Existence of solution in Sturm-Liouville DE
- Fourth-order eigenvalue problem
- Singular Solution
- Soln to 2nd ODE nonhomgeneous
- Losing a solution of a 1st order ODE?
- Heavy ODE System
- forced vibrations w/ damping problem
- Differential Equations - Video Lectures
- constant or variable coefficient?
- video lecture
- Simple Question
- Finding quadratic curves
- Please help me!
- Homogeneous Differential Equations
- Parabolic PDE in curved space
- Power Series Solution (SE)?
- beam pde
- Please HELP!! Differential Equations
- Schlichting exact solution
- Variational Symmetries. . .
- homogeneous of degree n
- Hooke's Law
- Integrating this...
- Radio active decay
- Second-Order Homogeneous Linear Equation
- Dfq Prob, using Logisitc Equation
- Dfq, Prove
- Which method to use?
- How to solve these Differential Equations?
- Waves Equation
- Help With PDE
- How prove the maximum of 2 functions
- Variation of Parameters
- Integrating factor strategy
- Probably a really easy problem...
- Problem in newtonian gravity- 2nd order, integration problems
- Mixed derivative in DE
- First attempt at Diff Eq
- How to get a particular solution.
- intergrate power of sin
- Finding a homogeneous solution
- Differential equation
- Need help finding solutions to Diff eq
- Bessel's Equation Solution Proof
- substitution methods
- Poplation Problem
- partial differential equation
- Total derivative -> partial derivative
- How do I use RungeKutta 4/shooting method for this problem?
- ODE, step change, Heat transfer
- second order ODE (numerical)
- A pendulum revisited
- system of diff equations
- Hermitian Operator
- Dirac Delta Function
- laplace1
- laplace2
- Liapunov functions
- Solution of Initial Value Problems, Laplace Transform
- integral equation
- practical application of partial,simple differential equation
- Nonhomogeneous: Undetermined coefficients
- Differential Equations
- Laplace transform
- HELP please.
- Some help need please
- Fourier Series Question
- help with frobenius
- numerical DE: Theta method
- help with non linear problem
- a pendulum system and ODEs
- Complete Set
- Bacteria Growth Problem.
- Tricky Looking!
- Linear First Order D.E
- complex exponential (properties)
- Simple ODE, but how to approach?
- question
- What should be the particular solution?
- Difference equation help.
- Need help with Impulse function and unit step function at singularity
- difficult for me>>
- Desperate
- Functional solution
- Geodesic equation
- Lorenz Equations
- simple but i cant get it? Log derivative
- homogeneous and particular solution
- Laplace Initial Value Problem
- 1D Diffusion Equations (Numerical Computing) [kind of long]
- Piecewise
- Systems of second order ODE's
- Finite Difference Methods
- Bifurcation Diagram, quick help please
- derivative question (Help Please)
- Q: pde heat eqn u(x,t) history effect \int^t_0 d^2u/dx^2
- Resonance pde wave equation u(\phi,t) involving lagrange polynomials
- Laplace Transform
- reconstructing my notes
- dim of a pde
- i'm not seeing it
- Mixing problems
- ordinary differential equation
- Chemical Reactions
- Derivatives of Exponentials
- Non-Homogeneous Heat Equation Problem
- conceptual understanding
- Differential Equations...Help!
- application of partial derivatives
- A necessary condition for uniqueness
- I know the answer but I don't know why!
- second order DE
- reduction order does not reduce
- A new perspective for an ODE
- Homework
- How do we find Integrating factor for a General Diff equation
- Auxiliary Equation with Imaginary Roots
- [SOLVED] picard iteration
- DE Problem
- ln|0|=kx+c?
- Coupled first order differential equations
- Coupled first order differential equations
- Laplace equation
- Help with ODE
- Is differentiel equation needed ?
- Nonnlinear Differential Equation problem
- Solution to general elliptic equation
- Green similar problem...
- a question about Differential operator
- f(x)=sin x, centered at x=pi/2 Question
- change of variable dif equation problem
- Another change of variable problem..
- Exact Eq.
- Linear independent or dependent
- How do you graph this?
- Is there a reason
- Stochastic differential equacions
- PDE's: examples I can do, real equations... No.
- Differential equation question
- Initial Value Problem question
- Runge Kutta Method
- is this ODE separable?
- first order coupled differential equations
- another weird O.D.E. ...
- ODE Problem
- A*(Uxx+Uyy)-B(x)*Ux=0
- solution of this non-linear equation...
- Please help me to solve these 2 D.E
- Please Help me Split this Equation into 2 equations
- Existence and Uniqueness Theorem
- Ode
- Picard's Iteration
- Ode Again!
- how to reduce?
- I don't understand the case
- What strategy to use
- Riccati Method
- Why using series solution
- Functional Differential Equation
- Modeling problem
- Self-Adjoint Operator Question..
- Newton's Law of Cooling Problem
- Help Identifying Diagrams?
- integrating factors
- Lipschitz Continuity and Uniqueness
- Cfp: Isnn 2006, China
- Pde
- Prove the Power Rule
- Hamilton Jacobi equation,...
- semicircle problem
- Concavity of an integral function
- Differential equation book and topics
- Problem with Nonunique Solutions...
- A Differential Equation...
- Simple Taylor Series?
- Cauchy-euler equation...
- Types of DE
- periodicity
- An interesting PDE perhaps?
- definition
- PDE: If u is a solution to a certain bound problem, question about laplacian u
- bernoulli equation
- An interesting ODE perhaps?
- Green Functions
- a question in coupled differential equation
- What is a non-linear...
- differential operator
- general solution to the euler-cauchy equation
- same roots
- Understanding Einstein's Math
- Laplace's Eqn and Cauchy's Integral Formula
- Table of differential equations? Online?
- Fractional Differential Equations
- H value in runge kutta method 2nd order
- Laplace Transform and complex contours
- This might sound really stupid... (!)
- legendre polynomial
- Integral of Bessel function
- An interesting IDE
- help-higher order limit cycles
- Heat Equation
- Fractional differential equation..
- frobenius method?
- Differential equation problems
- looking for integrations for dummies
- Partial Differential equation problem..
- Why y=e^mx is taken as trial soln ?
- bessel equation
- linear dependence of bessel equation
- Asymptotic Reference
- Showing a diff. eq. has no solutions
- Fredholm Integral of Second Kind, Eigenvalues
- Inverse Fourier Transform of Bessel Functions
- derivatives of ker and kei
- Characterizing second order ODE
- Chocolate with 20% extra
- A strange, but very simple, differential equation
- exact solution for pendulum
- Brave ODE
- Asymptotic expansion
- Solving a PDE : 2 order in time, 4 order in space, mixed derivatives
- symplectic algorithm
- Set of equations
- Variable Seperable Solutions in PDEs
- limit cycle
- Sufficient model, or...?
- Discretization
- 13th International Conference on Neural Information Processing (ICONIP2006)
- Measure-preserving flow
- ode and pde-the major difference
- nonlinear first order
- exact diff equations
- PDE with initial condition
- Discriminant of a PDE
- Series solution to coupled nonlinear ODEs
- ODE: limit as parameters tend to 0
- Any analytical solutions to this second order nonlinear DE?
- Numerical Solution to ODE System - IVP or BVP?
- trivial solution method for constant coeff case
- Differential Equations: I hate them.
- Frisbee Dog Pursuit Problem
- Stability for quasi-linear ODE
- euler's method for systems
- Good text for a second course on ODES?
- Euler's Method question.
- Looking for Differential Equation Review
- What's your favourite type of differential equation...
- Diff Eq resources
- Differentiating Bessel Functions
- suspended ropes
- Linear Systems equillibrium
- nonlinear DE fro CM
- Problem with a Fourier Series
- Nonlinear Parabolic BVP: Possible Numerical Methods
- A question about a nonlinear oscillator
- Is this licit or valid?..
- Blasius Equation
- Solve this equation
- Asymptotic solution to a differential equation..
- Laplace Transofrm using IVP
- Diffusion equation and fick law
- 3rd Order differential eq.
- A system of two second order differential equations
- Fourier/Laplace transform for PDE
- Partial differential equation problem...
- is there a better way to do this?
- help
- What are the differences between laplace & fourier transform
- dirst order ODE's with x & expontials
- Why do I need to use an integrating factor before I translate to polar coordinates?
- Nonlinear Weistrass DE
- Pde
- Nonlinear Equation
- Stone-Weierstrauss
- Sturn-Liouville theory
- Pseudo arc-length continuation
- Nonlinear ODE Question
- Analytical solution for coupled ODE's
- Vibrating Spring Problem
- Asymptotic expansions and WKB solution..
- First order ode question
- Help With Senior Thesis
- reply required urgently
- Non-homogeneous Poisson solution
- Can all differential equations be derived from a variational principle?
- DE for Rope
- diffeq review book suggestions?
- The heat kernel
- Optimization Two Point BVPs
- Solitary wave motive/reason?
- characteristic equation
- Kinetics Modeling
- partial differntials with hypercomplex numbers
- Analycity of a function
- Solution to ODE
- finite element-rod elements what is the pde
- Unstable fixed point..........help me!!!...U may find interesting!!!
- Help with this difference equation..
- Perturbation vs Bifurcation Theory
- Leibniz notation, need clarification
- desperate with this ODE!
- First order Linear DE
- pde and fem simple example
- A 2nd Order ODE
- Asymptotic mathcing for a first order differential equation
- Definition of Asymptoticity to a Function
- plsss heLp Me tO sOLve this problem
- mixing problem involving 3 inlets and 2 outlet pipes
- ODE Solution bounds/estimates
- learning site
- Second order Autonomous Differential Equations
- "sum" over Eigenvalues....
- A good review before DE?
- Convection described by Lorenz's Equation Bifurcation
- Is it possible to solve this ODE out?
- hermetic matrix
- 2nd order non homogenous DE
- Help on Non-Linear ODE
- HOw to solve this?
- Linear Partial Differential Equation---Problem in solving??
- higher order General Method problem...
- How to Solve the Following D.E.?
- limiting population
- drumhead PDE
- integrator factor
- Hankel Transform.
- problem with EDO and solution y=x^a
- Substitution Methods and Exact Equations
- Numerically solving coupled DEs?
- solutions of the wave equation's little brother
- Linear operator..
- Existence of a local solution
- Partial differentiation?
- Partial differentiation question
- Eigenfunction expansion method in PDE solutions
- power series problem
- Non-linear boundary problems
- Arg(z)
- Homogeneous Problem
- Navier-Stokes cracked?
- Need to find Green Function to solve ODE
- Real life situation to a sin graph on position by time graph
- What're the condition for a "green function to exist?
- differential equation tank problem
- Meaning of this operator
- Reduction of order
- finding linearly independent solutions
- nonautonomous ode
- nonhomogeneous problems
- improper integral
- Analytic solution of this, Advice.
- Approach to 'double convolution'?
- solved PDE problems / website?
- method of characteristics
- a rather simple DE
- Guy's, new here can someone help with 2nd order Diff EQ?
- method of undetermined coefficients
- A set of nonlinear coupled ODE's
- Electrodynamic
- wronksian
- 2nd Order De Solution
- This problem is hindering my overall work !!!
- Fundamental matrices in inhomogenous problems?
- a PDE and Linear operator questions.
- Putnam
- Solving PDEs
- O.D.E. for a Building
- A Laplace Inverse Problem
- Mass Spring System
- Partial Differential Equation
- Differential equation??
- Derivation of Momentum Equation (Eulers Equation)
- Laplace transform...
- inverse laplace transform question
- Non-Seperable ODE Help
- a simple differential equation problem.
- Integrating Factors
- design opt
- Forming DE
- singular points in 3-dim space
- Second order differential
- Cramer's Rule
- Help in solving a second-order linear differential equation
- Recirculation Current in an Inductor
- Integration Help
- Extremely difficult System of Differentil Equations
- Require help
- Airy's Equation
- Elementary Differential Equations
- Inverse Fourier Sine Transform
- singular points
- Horrible (?) system of PDEs
- Exact differential equations
- Solving this PDE :(
- The auxiliary equation. Where did it come from?
- Runge-Kutta Integration
- numerical methods for solving convection-diffusion PDE
- Existence of solution to Poisson's equation
- Stochastic equation
- Orders and Degrees
- Where can I find a Site with some good exercises?
- Good DE book?
- Simple PDE
- Non-hom heat eq. w/ Dirichlet + Neumann BC
- assumptions of solution form
- Theoretical possibility?
- Abel's formula
- Simple differential equation substitution
- Dynamical systems:From explicit to implicit equations
- Green Function Question
- Linear equation website?
- navier-stokes
- hyperbolic equations
- need a solution for the following problem
- Bernoulli... yay!
- second order equation
- PDE kind
- non-integer order derivative
- Results same w/ Euler, Improved Euler, & Runge-Kutta
- asymptotic behaviour
- Setting up a differential equation
- Help with a PDE system
- expressing one function as linear combination of others
- 2nd order differential equation
- Solving Universal law of Gravitation as differential equation
- differential equation with cross product...
- Differential equations and integal transforms
- Convultion with Delta Function
- evolution of pressure in navier stokes
- System of Differential Equations
- Some calc 2
- Question about heat conduction equation.
- automaticly resolve spring equation
- PDE need help.
- Not really Laplace's Equation??
- non-linear ode
- second order homogenous with variable coeffecients
- canonical boundary conditions.
- An example regarding asymptotic expansion
- A trick on PDE??
- Intuition for solving PDEs?
- air resistance (pebble throwing)
- Definition of markov process with ODE
- asymptotic evaluation of Laplace inverse transform
- Fröbenius method
- nonlinearity and dispersion in Kdv equation?
- Must solitary wave a product of weakly nonlinear and weakly dispersive?
- Perturbation expansion when solving Kdv equation
- Method of reduction of order
- How do you find isoclines?
- finding the limit and a differential equation
- Laplas Transform Calculator
- Solving PDEs?
- The region in physical spce where KdV equation is valid
- What is weakly nonlinearity?
- Velocity and Temp. profiles for stagnation point (m=1)
- Help Please!!!!
- Famly of Curves
- 4th order equation
- Streamline pattern of a solitary wave?
- D'Alembert's Solution
- Picard's and Peano's Theorem
- Initial conditions for PDE
- Shallow water and small amplitude wave?
- Need opinions on my differential equations book
- Differential of Bezier curve
- Solving a partial differential equation (Helmholtz equation)
- Duhamel's formula and iterates.
- Smooth solution to PDE?
- first order diff eq question
- diff.eqn. help
- ODE and BVP need help
- Streamline and free surface profile
- solving D.E using laplace
- solving D.E using Lapalce
- Find Yp for an especial ODE
- symplectic integrator/hamiltonian
- Help whit ill-posedness
- Please look at these streamlines
- What are the criteria for solitary wave to exist?
- Laplace question
- Delay Differential Equations?
- Cntinuous functions- Please I need help
- Nonlinear DE depending on two variables
- Bezier Plotting problem
- stuck on this equation,need help
- Technique on solving non-linear ODE
- Canonical form of PDE
- Diff Equation
- Non-linear ODE, "blow-up" phenomenon
- Hit a Blank
- Difference/Recursive Equations
- ODE Book
- DE from Theory of Vibrations
- Analysing parabolic PDEs?
- Characteristic method of solving PDEs
- non linear differential equation
- Eigenvalues of second order coupled differential equations
- Helmholtz differential equation
- First Order Equations
- where ı can find problems about first order diff. equations
- Solution of First Order DE using Integrating Factors
- Beginner question
- Good books for PDE's
- Please recommend books on numerical approach to NLS
- Perturbation theory
- coupled ODEs
- Solitary Wave
- Can a self adjoint operator have a continous spectrum ??
- an anti-limit problem
- problem
- FDM on curvilinear coordinates
- Power Series
- Can somebody explain to me this integrodifferential equation?
- Dispersion Relation
- Nondimensionalization and Scaling
- Pseudo differential operators
- solution to a differential equation required
- Eigenvectors
- Inverse Fourier Transform
- eigenvalue pde
- "engine of calculus"
- Transformations of KdV equation
- Using fourier and laplace transform to solve PDE
- ODE (ar laplace transform)
- Parallelizing Crank-Nicolson method
- question about a partial differential equation
- Modified Heat Equation
- How are order and degree defined for this DE? (cos(y'') + xy' = 0)
- question on Lotka-Volterra model and Lanchaster combat model
- How many solutions?
- Limitation of Split-Step Fourier method
- mass term in wave equation
- continous spcetrum
- A boundary value problem "discussion"
- Fourier Series confusion
- simple help with notation
- Relating two PDEs
- A notation question
- Eigenfunctions of an operator
- Solution of a differential equation?
- I have something that doesn't work out for me
- The Legendre Transform for Hamiltonians?
- Differential equation system, got stuck in a physics problem
- Theorem of the uniqueness and existence of a solution of ODE
- Characteristic method + Jacobian
- Collision of two NLS soliton
- Legendre's Equation & Bonnet's Recursion
- Nonhomogeneous Power Series Solution
- Coveting ODE to polar coordinates
- Adaptive runge kutta method
- spherical harmonic decomposition
- Undetermined coefficients to find general solution to system
- A Hard differential equation!!!!
- Particular integral question with 2nd order diff eq'ns
- minimum fencing when dividing triangle into 4 parts
- diffential equations question
- Differential Equations: Direction Fields
- Help solving a Differential equation
- is this equation linear or nonlinear??
- runge kutta methods
- Integration problem
- Got a real world problem here ..
- Second Order DE: Nonlinear Homogeneous
- inhomogeneous linear equation--linear solver
- legendre's differential equation
- Green's fcn for Cylindrical
- Initial Value Problems
- How to solve Bessel function
- How did they find the trial solutions for certain diff.eq'ns?
- Pre Diff EQ skills?
- Eikonal equation
- Help about the numerical computation on the following equations
- Separable Equations
- A DE, maybe easy
- differential equation
- I want to learn diff eq
- Diff Eq help needed
- Integrating Factor
- Second Order Linear Diff Eq
- Vector product - operator's a vector?
- A few implicit differentiation problems!
- Books that explain differential equations in terms of complex variable theory?
- Is this a general from Laplace Transform?
- how to sketch phase planes by hand
- Bases of solutions
- Help understanding homog. eq.
- Find W of 2 Solutions to a Differential EQ
- differential equations question
- nonhomogeneous DEs
- Formatting Question
- Help needed with an elliptic PDE
- Bacteria growth rate
- Numerically solving NLS equation
- [SOLVED] Differential Equation with loans and investments
- I am pissed! And Variation of parameters. who, what, when, where, why?
- non homogenous 4th order eq
- Good ODE books
- exponential second member
- Inverse Laplace Transform Involving a Step (Heaviside) Function
- Alternatives to Taylor's book?
- The number of BC and IC
- Something about homogenous DE with constant co-efficients:
- a chemical engineering example for lagurre equation
- Integrals of PDEs (help needed to interpret theorem)
- Canonical Transformation of Parabolic PDEs
- explicit solution of heat/diffusion equation
- Question about homogeneous dif. equations
- modeling rotational motion with differential equations
- good DE book to start
- Numerical solution to coupled diff. eq.
- What exactly is a dependent variable?
- Help needed to find the flow potential function
- Bessel Equations help
- something i thought of involving hamiltonian systems and gradient systems
- Rate of flow - height of water problem
- Analytical solution of Laplace's equation with horrendous boundary conditions
- Rewriting a matrix equation as a system...quick help needed :).
- Laplace transform....
- solving this 2nd order DE without numerical methods
- Bessel Functions / Eigenvalues / Heat Equation
- Product of two integrals....
- Domain, why are they both not defined?
- Solving a first-order nonlinear differential equation.
- Coupled Nonlinear Schrodinger Equation
- system of ODEs
- Infinitely many integrable/conserved quantities? Soliton?
- Proof of the convolution theorem for laplace transform
- Laplace initial value problem.... HELP! PLEASE!
- Separation of time and space
- stability? nonlinear mode? soliton?
- Fourier-Bessel Series Expansion
- about partial differential equation book
- laplace splitting fraction
- Numerical methods: Finite difference and spectral methods?
- Laplace transformation help?
- Complex Ginzburg Landau Equation
- complex numbers help
- Undamped harmonic oscillator
- y'' = -y
- Undetermined coefficients vs. Variation of Parameters
- a restriction within Variation of Parameters
- Retarded and lesser Green's function
- Boundary-value problems (Neumann condition)
- Fourier transformation
- quasi-linear partial differential equations
- partial differential equation problem
- Applied example of Laplace Transform?
- Instruction needed
- Differential equation reducible to Bessel's Equation
- Non-homogeneous laplace
- Green function
- Fick's second law in cylindrical co-ordinates
- Applied Diff. Eq. Problems
- Homogeneity Question
- non linear diff. equation example
- From 1D to cylindrical co-ordinates in PDEs
- Please help with a problem I am having
- Linearly Independent Solutions
- Implicit differentiation
- Real parameters for waves described by nonlinear Schrondinger equation
- Gradient Ascent question
- Split Step Fourier Method
- Euler expansion of double exponential?
- GR equations of motion
- Help creating a dif. eq. for a real life model???
- Differential equation involving money
- Fourier Series Transform Proof Help
- Methods to resolve diff. equ!
- phase curves.
- Cannot figure out how to solve this differential equation
- Differential Equations - Bifurcations
- Help with first order, "Bernoulli" ODE
- Second order diff.eq. help??
- Existence and Uniqueness
- difference in differential and partial differential
- Build logistic differential equation for given data
- need help with a diff. eq?
- Fourier Series question
- (x-a)^2 * (x-b)^2 * y'' = c*y
- Help with a method please?
- System of coupled first order PDE
- A very odd partial differential equation.
- Nonseparable Differential Equation
- Serious problem about Differential equation
- Integration of the function exp(cos(x))
- Solving this ODE
- Domain of a Differential Equation
- Biharmonic operator
- Need help integrating
- Laplace Cylindrical Coordinates (Separation of variables)
- Solving non-linear equations simultaneously with DE's using Euler integration
- Problems about Legendre Polynomials
- Fundamental Matrices in Differential Equations
- seperation of variables
- Solution to ODE
- Bernoulli equation
- How do you solve this nonlinear first order DE
- special riccati equation
- y'-y=(1/2)x-1....HARD!
- Hermite Equation use
- shallow wave equations
- Heat equation with Neumann BC
- Uses of Laguerre Differential Equ.
- nonhomo with natural log
- Limit Problem
- [SOLVED] Diff. eqn + erf (error function)
- Help with Wronskians and matricies?
- solutions of a first order linear PDE
- Solution of a simple Differential Equation
- Solution to partial differential equation
- Method of characteristics for a 1st order quasi-linear PDE.
- 2nd-order coupled nonlinear DEs
- Solution -> Second Order ODE?
- A simple differential equation!
- How do i prove this theorem?
- initial condition leads to periodic solution
- Can this be solved?
- Why do we get different answers ?
- Runge kutta method for solving PDE
- Drawing phase portraits.
- SOS from a chemist
- Hypothesis for the separation of variables method
- partial differential equation help
- Can this be solved
- Numerical Solution to 2nd Order Eqn?
- Can a differential equatio have NO solution ??
- Implicit
- Differential equation from general solution
- Olimpiad problem
- Problem solving 2nd order ODE...not for the faint of heart!!
- Need help solving a Non-Homogenous DE
- interesting problem
- Trial Solutions of Particular Integrals?
- Advanced Numerical Methods for Wave Eqn?
- Conversion of System of Eq's to 2nd Order Diff Eq
- Substitution for impulse in recurrence equation
- Non-linear ODE.
- comsol pde
- How can I integrate this ODE numerically?
- Need Laplace transform help
- system of DEs with different "denominators"
- Cant find the general solution
- ODE change of vars
- Series solutions near a regular singular point
- A problem about integral of modified bessel function
- integral of first order (first kind) bessel function
- Genral state space model - runge kutte
- Finding Singular points
- Analogy to Damped , Driven Oscillator.
- Hamiltonian System with NDSolve
- fun eode
- 1-d diffusion
- 1D Heat diffusion
- Nonhomogeneous ODE with Dirac delta
- Just a question on maximum probability
- Green's function
- [SOLVED] Forth Order DiffEq
- could any one help me
- Nasty Sturm-Liouville Differential Equation/Eigenvalue Problem
- Transforming an elliptic PDE into the Laplace equation?
- Can you help me in this problem?
- [SOLVED] (Methods)Parameters v Undetermined Coefficients
- Help on solving 2nd order linear Partial Differential Equations
- DE problem: Dog chasing a rabbit
- generalizing separation technique
- First order ODE problem
- strange differential equation
- Laplace operational properties
- Need help with D.E to account for air drag of my projectile
- thermodynamics question
- System of Second Order, Nonhomogeneous Differential Equations
- Solutions to Homogeneous 2nd-order Linear D.E.s
- System of first order PDEs
- please i need help and fast!
- first order differential equation help
- question in understanding differitial equations..
- where can i find ...
- (1/2)y'' + y^2 = 1
- question on drawing a diff.equation
- Bessel Function?
- Axisymmetric Poisson equation
- A faster way to solve this ODE?
- Double differentials and some curious problems
- how to solve this 2nd order nonlinear differential equation
- Energy distribution function
- Integration and taylor expansion
- Slope Field
- How did Euler know this?
- i need help in a bonus problem
- Linear PDEs
- Multiple Scales and Non-Linear Oscillator.
- Solving a non-linear non-seperable differential equation
- More derivative fun
- Fourier/Laplace transforms
- first order nonlinear DE
- Solution strange, differential equation
- Scaling a PDE
- Von Neumann stability analysis
- question
- y'=(y+9x)^2, (y+9x=v)
- solve 4th order trial n error method
- Turn a Solved DE into a Taylor Series...
- Unique soultion of a set of nonlinear differential equations.
- diffusion equation with axial symmetry
- Three Variable Simultaneous Differential Equation
- Solution to 1st order nonlinear differential equation
- ODE on the plane
- Need help setting up Logistics equation
- simultaneous differential equation
- Fourier Coefficients
- "Helmholtz equation" Neumann and divergence
- Problem with a boundary value problem non linear...
- How to solve the following equation ?
- Laplace Transforms to solve non IVPs?
- differential equations with singularities
- 2nd order with exponential and constant on right side
- illustration about dynamical system
- how to decide right solution
- ODE question
- Another ODE, can't separate variables
- Simple ODE question
- Roam DE thread.
- Nice Laplace Transform
- Linearization and differentials
- Better substitution?
- linearization of nonlinear non homogenous ODE
- Laser Travelling wave rate equations solved numerically
- Cant resolve this diferential equation
- Laplace transform
- existence and uniqueness
- Green Functions and BC's
- Algorithm for Finite diference
- Legendre's associated function - number of zeros?
- 2nd order differential equations with constant coeff. The Particular integrals.
- Heat equation...Fourier Series
- DE of the form y'' + by' = a
- The ONLY solution of PDE: f_t g_r = f_r g_t ???
- simple looking but hard to solve nonlinear PDE
- solving forth order nonlinear ode
- solution to the nonlinear 2nd order d.e
- nonlinear first order DE
- Eigenfunction
- 1st Order Nonlinear equation - Control
- Doubts about change of variable in ODE
- Green Function and Boundary Conditions...
- Gradient of multiparticle wavefunction
- First order pde cauchy problem by method of characteristics
- Finding the Integrating Factor
- How can I determine if the equation (2x+3) + (2y-2)y' = 0 is exact or not?
- Numerical Integration and Energy Loss
- DGL 2. Order
- draw the trajectory in the x-xdot plane
- Eigenvalues of Laplace-Beltrami operator for oblate spheroid
- laplace tranform
- Wave on a string and the chain rule....Argh
- How would I solve a DiffEq of the form...
- PDE with functions for coefficients: f_v g_u + f_u g_v = 0
- Finding derivatives of vector function for numerical integration
- Reduction of Order
- Clairaut's Equation in Optics
- solving diff. eq.
- Differentiating Products
- partial Multigrid for CFD ?
- method of characteristics for linear PDE's (variable coefficients)
- Particularly annoying
- change of variables to polar coordinates
- modeling with diff eq
- using fourier/laplace transform and green's function
- Integration Factors
- (ln x)(ln x)
- Non-linear ODE's
- Many-Body Numeric Integration Algorithm
- Difference equation
- Nonlinear Differential equation and simplification techniques
- Help with differential equation
- From 2 1st order ODEs to 1 2nd order ODE?
- Symmetries in DE
- Skew Adjoint Frechet derivative?
- Fourier trouble in PDE
- Need help drawing phase portraits for coupled systems of ODEs
- solve y'y'''=y''
- Diff. eq. for the Einstein metric inside a body
- Separable Equations
- Differential problem! Confused :S
- Heat equation with source and Neumann B.C.
- Frobenius Method
- Laplace and Poisson Equation in oblate and prolate spheroids
- Where did this term come from? (Fourier)
- general methods for quasilinear system of ODE's ???
- Equation of Diffusion, trouble simplifying, PDE
- ODE trouble at integration step
- 1st order non homogenous DE problem solving
- Condition for a 2nd order differential eqn to have bounded solutions?
- Equation of heat conduction, vague text book
- Numerical method to solve high order ODEs.
- Number of solutions of a nonlinear differential equation.
- Euler equation
- I have some questions about ODE
- Wave Equation, stuck on a partial calculation
- Manipulating differentials - references?
- Help with DE and UNIT STEP FUNCTION
- Integration of the function exp(-i*r(x)*cos(x))
- Differential in a initial value problem
- Fourier transform and steady state solution?
- order of differential equation
- any reference for exact polynomial solutions of nonlinear ODE's ?
- y'' - y' = e^x [2nd order nonhomogenous diff Eq]
- Partial derivative of an ordinary derivative?
- Using nullclines to plot phase portraits
- Laplace u => Harmonic function
- reduce order of ODE y"=c-2y'2/y
- Trouble with dirac delta in R^2
- A differential equation : x^2 * u'' = k*u
- Solving PDE involving exp(x^2)
- derivatives of natural logarithmic functions
- Derivative
- 2nd-Order Non-Linear ODE: Where to Start?
- What is orthogonal trajectory?
- energy spectrums in QM
- Quick question-Representing a curve w/a DE
- A Weird Differential equation
- infinite series solution for NON-linear ODEs???
- Laplace's EQ, Dirichlet cond, problem at definition
- need some help.
- PDE in two dependent variables
- Wavenumber of steady waves
- Lagrangian method for nonlinear ODE, 2nd order ??
- Initial Condition?
- x'=sinx
- F. S. Expansion
- Help identifying ODE
- Transforming an ODE ...
- How do you solve this type of linear partial differential equation?
- delta function solution to a nonlinear PDE
- Finding the derivative
- Separable first order diff eq
- Formulating Differential Equations
- bounded solutions of a system of copled liniar Schrodinger equations
- help with basic pde
- i need finite difference code in matlab
- critical points
- The method of complexification?
- 1st order diff equ vs integral tables
- Laplace equation
- Eigenvectors
- Recommend a textbook about differential equations
- Homogeneous equation, problem with algebra
- Solve the First-Order ODE
- partial using the chain rule
- Air drag equasion
- Simple and stuck
- Thermo diff. eqn problem
- suggest a function
- How to solve DE with irreducible quadratic
- Runge-Kutta or Runge-Kutter?
- General solution of a linear ordinary differential equation
- How to integrate the following Bessel funtion
- Sobolev W0 basics question
- Partial Fraction Expansion with repeated roots
- Analytical Solution to this? -- linear system of ODES
- Derivative of a Wronskian
- more general solutions of Abel ODE, second type ??
- getting general solution of Abel second type ODE from one(two) particular solutions ?
- translating velocity and angle into wheel speed (for a two wheel robot)
- About orbit or ode
- Help in Matlab coding for discretized PDE
- Phase Space -- does each point have a unique time associated with it?
- 2d Laplace equation in a 1/4 plane
- Hypergeometric D.E.
- dynamical systems
- pseudospectral to solve kdv
- derivation of the ordinary time derivative of the energy associated with a wave
- Non-separable, linear pde
- Damped HO and Laplace transform method
- Differentials in a derivation
- Partial Integro-Differential Equation
- Method of Undetermined Coefficients - Inhomogeneous DE
- Understanding the construction of vector spherical wave functions!!
- Linear stationary system of 2 partial DEs, numerical implementation
- The difference between linear and non linear differential equation
- Flow of a vector field
- Discretize and solve Chimera state model
- Nonhomogeneous with constant coefficients equation
- Taylor method for IVPs
- Hermite equation
- Numerical Solutions to Coupled ODEs with Boundry Values at Opposite Ends
- Operiational method for solving differential equation
- Normalisation of associated Laguerre polynomials
- how do i deal with integral boundary conditions?!
- How the heck do I integrate this?
- Euler's Method
- Spherical bessel functions addition theorems!
- simple indicial eq
- Nonlinear ODE
- Higher order DE
- PDE derivation
- Showing That the Modified Bessel Function of the First Kind is a Solution
- Pde
- Integral Equation
- Order 3
- Has my lecturer lost the plot!!!!?
- DE solutions
- Diff. eq. with square root
- ODE with complex coefficients
- Integration & Differentiation Practical Example
- Pde
- Second Order Seperable Differential Equations
- Partial differential equation
- picard iteration!
- linear differential equation?
- How to solve this nonlinear ODE?
- Population Growth
- Functions that define an orbit
- Fluid Mechanics PDE's and existence of solutions in inviscid, axisymmteric case
- Analysis , then PDE ?
- Fick's Second Law: Laplace Transform to solve PDE in Spherical Coords
- Laplace vs Fourier Transform
- solving partial differential equation with FEM
- Solving Higher Order Differential Equation
- what is the best way to solve this problem?
- Quick Diff. Eq. Question
- Partial Differential Equations Help
- equation graphs query?
- Motion equation
- Physical significance of the laplacian operator?
- Motion graph
- Numerical integration of angular velocity
- connection between modified Bessel and hypergeometric fct's
- Numerical method to solve a fourth order ODE
- Differential equation in the torus
- ODE derived from Schrodinger's Equation (Harmonic Oscillator)
- Poisson and Helmholtz equations
- About solving a Transport PDE
- need help on this pde
- solving PDE without BC with MATLAB
- PDE - Change of variable
- Unit tangent
- Finding finite element soluton for a PDE
- Solving system of ODE
- Imitations of classical Julia set using Newton's method
- second order nonlinear differential equation
- Numerical method needed for the following system of ODEs
- Help in hard model of RABR - solitons- solving PDE
- Age Diffusion Theory and Fourier Transforms
- Second order linear DE
- Method of Variation of parameters
- 2nd order dampened harmonic oscillator (Shot in the dark)
- partial derivative
- undetermined coefficients
- Heat equation PDE for spherical case
- degenerate critical point
- Space grids?
- Non-Linear ODE Question
- Finding particular solution with fourier series
- help in second order ode numeric solution
- chain rule proof
- Mechanical vibrations
- Double integral
- specific laplace transform...
- Integrating Factor and Unintegratable Term
- Insane differential equation... help?
- differention equation problem, help please!
- a question about the sobolev spaces
- Heat Equation
- steady state temperature
- principle of superposition
- partial derivative problem
- Continuity of DE solution in the _density functions_?
- Some simple Differential Equation questions [Please help!]
- The loss of y = 0 as a solution
- Boundary Value Problem , triangular plate
- steady state temperature of insulated rod
- Some ODE help needed
- Rectangular Plate BVP problem
- Wave Equation String BVP
- Verifying if this PDE is a solution
- Can someone explain Charpit's Method to me (PDEs) !!!!!!!
- difference equation
- Partial Differential Equation
- financial model using integral
- question about nonlinear system of PDEs
- Why does this blow up?
- pde
- ODE, Liapunov Functions
- Advice on 1D second order ODE
- fundamental set of solutions
- "Self-Adjointness" on Differential Equations
- Cauchy Conditions on a Problem
- Quick Frobenius Question
- differential equation from general solution
- Help in Split step fourier method
- Help with a relatively simple first order, first rank DE
- Step Function (heaviside) laplace xform
- little help needed for solving first order diffferential equation in NONLINEAR OPTICS
- 1D wave equation with dirac delta function as an external force.
- Finding Negative Definite 'hood
- First Order Linear Equation
- Laser rate equation(ODE) simulation problem
- Some clarification needed about basic concepts
- books on numerical pde solving
- 2. order diff equation
- Singular solutions Separable Eq. and IVP
- Having Trouble with this DEQ
- First order IVP (sort of)
- Poisson-Boltzmann Equation
- First order linear partial differential equation
- integral problem
- some silly modeling question
- Question related to PDE y(z_x)+x(z_y)+z=y
- Simple harmonic motion
- sin(t) - cos(t) can be rewritten as?
- second order ODE solution for this system??
- Nonlinear shooting (BVPs)
- Special case when solving D.E.'s
- 2nd-order ODE Euler's
- I feel really lost in my PDE class. Can somebody explain some things to me?
- Plotting Phase Graphs/Diagrams of PDE's in Maple
- solving a system in polar coordinates
- How to solve 2nd order ODE solution eg. te^t+e^t, for t?
- finding amplitude and phase angle from a graph?
- Non-homogeneous ODE via Power Series
- Solution by finite-difference method.
- Hankel Transform of zeo order
- Slope fields in Matlab
- Frobenius Method again!
- an issue with solving an IVP by Taylor Series
- How do I solve: p(t)f''(t)+q(t)f'(t)=Kf(t) ?
- Gear predictor / corrector
- how to solve dy/dx=3√(xy)
- the difference between the Heat and Diffusion equation ?!!
- How to solve: ((1/k)')^2 + T^2(1/k)^2 - T^2 = 0
- Definition of the eigenfunction?!
- Hi! how to solve? y(y-2x(y'))^3=(y')^2
- Laplace transforms of Heavyside functions
- linear system which is time independent
- What is meant by a "complete solution"?
- Dirichlet conditions+Analytic functions...?!
- How to Solve dx/dt = Adx/dy + Bdx^2/dy^2
- How do I solve: (p(t)f(t))''=Af(t)
- sin and cos
- About an equation with eigenvalues
- How to solve the following (integro-differential eq.)...
- differential equation what going on?
- Complex ODE system numerically - GSL ODE SOLVER
- Manifold ?!
- Mutual inductance using bessel function
- Computing the potential from the continuity equation
- Solution of laguerre polynomials
- stability of PDE's and ODE's?!
- How to find uniqueness in first order pde
- 2nd order differential equation
- How do you determine shock structure of nonlinear PDE?
- Can Wronskian be used for all?
- [Numerical] Euler Backward method
- Help Solving a System Of DEQ's
- How is Finite Difference Method?
- 2nd order nonlinear non-seperable equation
- Eigenvalues of Laplace eq in the circle.
- louiville theorem
- How to program user-defined PDEs by using COMSOL Script?
- Time-dependent boundary conditions
- domain of influence for wave equation in 2 dimensions...
- Curl and vector fields
- ODE help, not sure what method to use
- Can it be solved: 2nd order non-linear diff. equation
- Trace Determinant Plane
- PDE help, Green's Function
- solve
- Airy functional equation.
- Traveling wave
- Convode
- 2nd Order Nonlinear ODE
- Surface Tension of a Pendant Drop Using Young-Laplace Equations
- System of Coupled Differential Equations
- problem in simulation of optically pumped VCSEL rate equation...
- Diffusion equations
- Pde
- Variation of Parameters... help!
- Need help to solve one differential equation
- Bessel Function order 1
- System of differential equations (classification of 3x3 case)
- Engine for solving LaPlace's equation
- Calculus of Variations Euler-Lagrange Diff. Eq.
- HELP! Inverse Laplace Transform
- Fourier Transforms
- Inverse spectral problem
- Notation issue: Grad with a vector subscript
- Helmholtz equation in N dimensions
- Help Needed Solving
- simple linear diff.eq.
- polar BVP in Sturm-Liouville
- Frobenius Method
- Differentiating natural logs and exponential functions?
- How to Estimate with a Computer program a 3rd order diff eq
- Reducing third order ODE to a system of first order equs + 4th order runge-kutta
- Sturm-Liouville Problems
- Stability of the Origin of an Almost Linear System
- Splitting a second order PDE into a system of first order PDEs/ODEs
- Why does separation of variables work?
- Derivation of Variation of Paramters
- Critic of heat equation
- Asymptotic matching
- uniqueness for ode coming from parabolic pde
- Solve a PDE of 4order in space and 2nd order in time using Mathematica or Matlab
- Laplace Transform Problem - Peacewise Functions
- Help solving a 2nd order diff eq
- Solution to diffusion equation - different input
- Solving Differential Equations Involving Vector Fields
- How to solve 2nd order non-linear DE with exponential
- Determining Legendre polynomials (Boas)
- Frobenius series
- Double Pendulum
- Difference equation with non-linear term
- Laplace equation on a rectangle with Robin BCs
- Poisson's Integral Formula for Rectangle having Robin BCs
- Green's Formula for Laplace Eqaution : For any BC's ?
- Orthogonality Property of Hyperbolic functions ???
- How to draw phase planes on TI 83 or 84?
- reaction diffusion problem concentric spheres
- decay reaction query
- solution of differential equation
- Fundamental Solution of Laplace Equation 2d vs 3d
- Plotting streamlines in polar coordinates mathematica?
- Help on PDE
- Numerical Solutions to ODE
- Reflection Principle(PDES)
- Finding behaviour of ODE solutions without solving for them
- A second ODE problem that bothers me a lot~~ HELP!
- Can anybody help please
- Simple Harmonic Motion
- Laplace's equation in spherical co-ords
- Can't solve differential equation for atmosphere density
- A tricky 2nd Oder ODE Problem,nonhomo delta=0 case
- Reducing order of PDE
- Newton–Raphson method - Finite difference method
- Confused about separation of variables for PDE
- A special integration
- help with frobenius series
- Solving a System of PDE's Using Maple
- Euler forward equation
- Monotone Test of the equation
- m i right
- gerechte23's question
- help with integral equation
- steady solution of ODE
- sliding down a hill with no friction, non-constant incline
- System of ODE's and direction field
- Linear Differential Operator/Inner Product
- Help on analytical model of tracer dispersion in a vertical porous plane !!
- Solution of Euler-Lagrange equation
- Laplace help on a DC transient RC circuit
- Laplace equation only applies in limited regions ?
- Green's function for Poisson equation in a box with both mixed boundary conditions
- Terminology question
- Negative Lipschitz (Hölder) exponent: Intuition!!!
- need help with Laplace transformations
- help me,master-hands!
- ODE: Confused about a Homogeneous Eqn question
- 2nd order nonlinear ODE
- First order homogenous DE with variable coefficient
- Solution of a Transport-type equation
- question about solving recurrences/difference equations
- Differential equation similar to Legendre
- Geodesic on Parabolic Surface
- hello PDE - Matlab Code - help needed
- Solving second order PDE by separation of variables (getting 2 ODE's)
- Using WKB(J) method to obtain asymptotics for an elastic string?
- Laplace transform
- A cooling planet
- PDE solution uniqueness
- Geometry of phase space and extended phase space
- Geometry of phase space and extended phase space
- PDE's: Seperable Solutions
- NDSolve in mathematica
- Laplace transforms and ODE
- undamped spring system, need urgent help
- Power series method of solving ODE
- solving ODE in matlab
- Ode
- Navier-Stokes Equations
- OLS regression - using an assumption as the proof?
- General solution of ODE
- Trouble with boundary conditions in Newton-Raphson method for Coupled PDEs
- change of dependent variable in a DE
- Having a hard time understanding Runge-Kutta integration method
- understanding the manipulation of Laplacian
- Second order differential equations and analog computers
- Asymptotic solution
- Factorization of Laplacian
- easy ODE to solve using frobenius method...help?
- Nonlinear diff. eq. involving Besselfunction of first kind
- Infinite sum PDE solution
- separation of variables
- Green's function approach using Lebesgue integration
- How to handle the Dirac delta function as a boundary condition
- Help with Legendre Differential equation
- What is a "lifting function"?
- Help needed with Airy equation
- Problem solving highly non-linear pdes in mathematica! Can anyone help?
- help undetermined coefficients
- Finding aplitude of free undamped motion
- 1D wave equation -- bizarre problem!
- Substitution to make it seperable
- im stuck, modeling problem
- Neumann vs Dirichlet
- Autonomous Second Order ODE
- Issues solving this DE
- 1st order diff eq question
- Keplers Law of Planetary Motion?
- bessel+starting part?
- Integrating Factors Found by Inspection
- stability conditions for finite difference method to solve coupled equations
- Weak Solutions for PDEs
- Heat Equation - B.Cs
- Approximating Non Linear Systems by Using The Matrix Eponential
- help me for this code! PDE
- second order linear 'ODE'
- Fixed Points of ODE
- PDE - substitution of variables
- Three-term integral
- differential equations
- Pde
- Stuck on a complex ODE (conjugate issues...)
- Deriving Wave Equation by Vector Approach
- [Numerical] System of first order ordinary diff equations with given asymptotic
- Method of Variation of Parameters
- Describing the form of a second-order D.E.
- Integral of square of Bessel function
- Need help understanding linear equations of higher order
- multiplying by dx
- Second Order Numerical Integration w/ Neumann Boundary Conditions
- diffusion problem
- Can someone verify my solution?
- max dimensions of phase space
- Help on Solving this Eq.
- Graphing Direction Fields With an HP Calculator
- 4th order homogeneous linear ODE with constant coefficients
- Help setting up a tricky system of ODEs
- Bernouli Equation
- Differential Equation with Vectors
- Stability
- Matlab Help please
- Does "dx" does not make change in front of the integral?
- Integral representation of Bessel functions of the second kind
- can this equation be solved with the method of undetermined coefficiants?
- diffusion equation, semi-infinite solution
- navier-stokes equations
- Who can find the solution to this ODE?
- Non-linear second order equation
- Name for DE given by law of gravitation
- Fourier transform of Bessel functions
- Solving a linear homogenous 2nd order DE with a constant term
- 2nd Order ODE,Homogeneous,Non-Constant Coeff.
- Preparation for PDEs
- What is the purpose of PDE research/study
- point spread function, cylindirical aperture..
- Partial Fraction Expansion with repeated & complex roots
- Laplace transforms of Heavyside functions
- Inverse Laplace transform problem
- homogeneous diff. eqn help!
- linear and non linear differential...
- need help solving pseudo-hypergeometric ODE
- differential equation
- help with nonlinear ode
- series solution to 2nd order differential equation
- Help with linear PDE problem
- Laplace Transform (Numeric Computation?)
- Inverse Laplace Transform (Proof?)
- Laplace Transform Convergence
- Approximations used in Crank-Nicolson method for solving PDEs numerically
- Solving 2nd order differential equation with non-constant coefficients
- Opinion about y"=f(y)
- Separating Variables
- Finite difference for 2nd order PDE
- Why derive Regular Singular Points?
- Systems of Nonlinear Differential Equations
- Temperature hollow sphere - Temperature varying inside
- Differential equation from the block diagram
- Laplace tranform on functions
- Nonlinear ODE by an infinite series expansion
- continuous partial derivatives
- Existence of integrating factor
- derivative with respect to a variable
- Heat kernel (PDE) asymptotic expansion
- Linear initial-value question
- Ordinary Differential Equations: Separation of Variables
- Mathematica NDSolve
- Differential Equations Profit
- Materials on modelling phenomena with ODE/PDE
- Solving the Undamped Duffing Oscillator
- Variational Iteration Method
- PDE 2Ux + 3Uy + U = 0 with change of variables V(x,y)=ln[U(x,y)]
- Hadamard and "well-posed" problems.
- How to solve this non-linear PDE?
- Existence-Uniqueness problems.
- exponential growth model
- Greens Functions, PDEs and Laplace Transforms
- Nonhomogeneous PDE with non-constant coefficients
- Help with 3rd Order DE (r^3)*r''' - kr' = 0
- First order linear PDE
- 3D wave equation - spherically symmetric transformations
- First order linear PDE-the idea of characteristic curves
- First order DE separable
- different type of differential question most ppl used to
- Integrals of Trigonometric Functions
- Ivp
- First order DE with exponential
- Second-order non-linear PDE
- Integrating Factors
- Questions regarding dummy variables
- Solution of State Eqs when A matrix is Time dependent
- Can a distribution or delta function solve a NONlinear ODE or PDE
- non-linear operator
- Help with 1st order quasilinear PDE
- unsolvable differential equations?
- Solving First Order Differential Equation using substitution
- how to solve this 1ode
- regular singular points (definition)
- Recommend good intro to PDEs book?
- Method of residues integration problem
- Hamilton-Jacobi-Equation (HJE)
- a difficult differential problem to solve.
- Quasilinear first order PDE
- Bessel's equation
- Help needed regarding my system of PDE
- Max tension of a chain
- dx/dt = y; dy/dt = x?
- help with 1st order ode
- partial differential: partial scalar partial vector
- Convergence of Series Solution
- Looking for a good Differential Equations Textbook
- How to find fixed points for a non-linear system of ODEs
- Initial Value Problem
- Maximizing a functional when the Euler-Lagrange equation's solution violates ICs
- Mixing problem Helllllllllllllllp?
- Systems ODE
- 2nd order linear hyperbolic PDE?!
- 4th oder ODE
- building an rc chopper and have a question to do with damping vibrarions
- Power Series Solutions of Laguerre Differential Equation
- simple looking 1st order ode
- Separable Differential Equation (what's wrong?)
- Can't solve this ODE
- green's function
- Help! Programming Runge Kutta
- Trigonometric Identity and Differential Equation question
- Applications of p-Laplacian equations
- System of linear second order differential equations
- Problem on Green's function
- help solving third order pde?
- two second order differential equation
- Help solving 2nd order differential equation plz
- Approximate General Solutions
- How do I model the falling of a skydiver using a DF?
- Peano Existence Theorem confusion
- Proof
- Differential Equations
- Differential Equation
- Simple 2nd order nonlinear ODE
- PDE involving BiLaplace
- Euler's Method With Mass Balance o.d.e's
- Help with simple numerical ODE problem from QM
- Matlab solver question
- first oder pde using laplce transform
- Laplace Transforms, Region of Convergence
- Stochastic Caluclus: dt^2=0, dW*dt = 0?
- Stopping ODE solver on zero crossing
- time variant Green function
- Reduction of a wave aquation
- Numerical Differential equations in Maple
- Delta function
- Vector Green's functions for Laplace function
- coupled ODEs
- Why not separable (basic question)?
- Picard's Iteration
- Help in mathematical modelling phase diagrams! :(
- pde with boundary conditions
- Poincare Return Map
- 2nd order
- differential equation
- Ode
- Numerical Schemes for KdVs?
- Green's Function - Kirchoff Helmholtz Integral Problem
- When do these methods for PDEs apply?
- discretization
- Question
- Eulars method
- Solving Second Order Differential Equations
- Solving Predator-Prey Equations
- Analytical Solution to Poisson's Equation
- Laplace equation in cylindrical coordinates
- System of nonhomogeneous difference equation
- dssssss
- System Control Query
- Poisson Solver FFT
- How to solve y''=0
- SDE Textbooks
- Laplace transforms to do integrals?
- inhomogeneous wave equation
- Different methods to solving PDE's
- Differential Equation Uses
- Backward Euler / Implicit Integration Implementation
- order of PDE
- inverse laplace transform
- how to tell if F(s) is laplace transform?
- D’Alembert’s reduction principle
- Using substiution of the form v=1/y^k to solve 1st order DE
- How do I integrate this? x/(x^2-1)^.5
- vector integral
- Series expansion
- Mechanical ad Electrical vibration EASY question please help???
- Nonlinear Dynamical Systems: Book Suggestions
- mx''+dx'+kx=constant*t^2*cos(constant*t^2) ???
- Second Order Linear Equations
- Integrating Factor Question
- Asymptotic behaviour of 1st order ODE
- ¿unsolved problems in differential equations?
- I need some help understanding eulers method.
- Please help in Gamma function to series conversion.
- Matlab ODE-Solver and Constant Params
- Euler methond and the improved Euler method
- Please help proving this Bessel identity.
- Orthogonality of Bessel Functions
- Dilution problem
- Find simplest differential equation
- Need recommendation on a good Partial differential Equation textbook.
- who can differentiate this one?
- Wave equation
- Solving EM Problem with Variation of Parameters
- Question on orthogonal function with respect to weight.
- Multiplicative inverse
- implicit integration in large simulation
- Dyon solution in BPS limit (differential equations)
- PDE and manifolds
- Stability of a vector differential equation
- C++ newbie qu: grid construction for finite difference
- boundary value problem(ODEs)
- anyone ever work with a DE like this?
- Math Nerd Badly Needed!
- forced equations
- modified Picard method
- Galerkin method for wave equation
- newbie question
- boundary conditions
- Time of Motion with Negative Feedback
- PDEs and the smoothness of solutions
- Solving differential equation (involves power series)
- Help doing differential equations and laplace
- non homogeneous differential equation - power series solution
- boundary value problem
- laplacian of f equals zero and spherical harmonics equation
- Solving Backward Euler with Newton's Method
- 1st Order Homogeneous DE
- Decoupled or coupled?
- Change of variables in heat equation
- Seperation of variables / Alternative method to solve a DE
- Exact Differential Equation
- Method of integrating factors
- velocity eqn...
- System of ODE Boundary Value Problem with 2nd Order Backward Difference
- Convergence of fourieer series
- Numerical solution to a complicated ODE..
- Second degree DE for pn-junction carrier concentration
- Multivariable DE and Momentum Problem
- urgent help for Linearization
- Please help with Euler DE.
- Finding General Solution / Fundamental matrix
- does chaos means long term numerical simulations useless?
- Uniqueness of a solution
- Solution for integral_0^t exp(A(s))x ds?
- Solving ode of forced oscillator with dumping
- help solving the heat equation!!!
- About some integral equation
- Bessel's equation of the second kind with integer order.
- Showing Integral form satisfies the Airy function
- special fourier series
- generic question on boundary conditions
- Integration RUNGE_KUTTA in complex plane.
- Norm of modified bessel function
- Question on notation variational principles
- Use of laplace to solve a differential equation
- second order differential equation
- using orthogonality properties
- Fourier method | eigenfunctions
- Laplace X-forms Proofs
- Separation of variables
- Mass-spring system
- Mass-spring system damped
- while finding a second solution with wronskian for bessel...
- Mass-Spring System Beats and Resonance
- I need to verify Bessel function expension.
- Differential Galois Theory: exp(-x^2) has no elementary antiderivative
- Effect of Resonance
- Beat Vibration
- Vibration underdamped
- Effect of beat
- Conduction of Heat
- Help to solve 4th order ode
- Meaning of a PDE expression
- Help with solving PDE
- Question on zeros of a Bessel function.
- Graph equation
- Is it possible to numerically solve this PDE?
- a strange ODE
- The Fancy L Transform Thingy
- Newton's 2nd law
- Quick question (Euler)
- Need help solving second order DE.
- Finding the solution of this equation..
- Laplace Transform inversion
- can anyone tell me the physical meaning of laplace equations in higher dimentions?
- Finding Equilibrium Points of Nonlinear Systems
- Differential Equation Problem. HELP!!!
- (ODE45) problem of solving laser rate equation
- First Order Nonlinear PDE
- Sturm-Liouville Problem: conditions over the coefficients
- Laplace Transform of Composition of Functions: Floor(f(t))
- Issue with Green's function for Poisson's equation
- solution of the 2nd-order pde u_t=u_xy
- Helmholtz equation and the Maximum Principle
- help with an easy ODE
- Units?
- second derivation function
- Laplace transform: function defined by parts
- Regarding Inverse Laplace Transforms
- Runge Kutta , please save me
- Help with Vector Analysis in spherical velocity-space coordinates
- How to factorize x^4 + x^3 + 2.01 x^2 + 0.01 x + 0.01 = 0?
- is this a correct solution ? to ax'' = 0
- The largest interval for which a certain solution is unique
- Linear ODE Non-constant coefficient
- Temperature distribution on a circular plate
- Navier stokes and pressure on objects
- pde
- a set of two 2nd order linear ode..
- DiffEq order question
- General solution to a simple ODE
- Simulating the 2D wave equation with varying speed
- Legendre Differential equation question.
- Help in solving PDE
- Linea/Non-Linear ODE typing
- Help!, solving simple PDE with ODE45 or ODE23 solver in matlab
- problem with first-order nonlinear ordinary differential equation
- ODE dilution problem
- Finite difference method help (bvp)
- Somie info about this PDE please ??
- Help solving a set of Integro-Differential equations with Matlab/Maple/Mathematica
- equation manipulation, fluids
- Help with a difficult ODE
- Is Y a scalar wave equation?
- Can I solve the discreate ODE by considering the continuous case?
- Solving 1D 2-particle/2D 1-particle Schrodinger equation
- Question on Rodrigues' equation in Legendre polynomials.
- Inverse Scattering Transform
- Coupled non linear ordinary differential equations.
- 1D advection with damping/forcing
- The ratio of two total differentials equals the dervative? Why?
- New ODE Oriented website
- why doesn't the integrating factor e to an integral seem to use a constant of integra
- Understanding Laplace transforms.
- How is this a 4th order ODE?
- Inverse Curl
- Separation of Variable - What's REALLY going on?
- Numerical differentiation using forward, backward and central finite difference
- Pde
- Population decrease help
- Laplace transform for help
- Help Solving a Nonlinear ODE
- Refilled Leaking container ODE
- Could someone Please help with DIMENSIONLESS VARIABLES.
- Using Boundary Conditions.
- Proof from PDE by Lawrence Evans
- Brachistochrone Problem
- SIS disease Model
- Solving 1d Helmholtz with boundary conditions
- PDE U_t = aU_xy (mixed derivatives)
- Clarification of PDE notation
- help
- Doing 3 second order differential equations numerically
- Stuck on second order non-linear ODE
- PDE analytical solution
- Please show me a solution to the differential equation
- Meaning of delta?
- Question regarding D'Alembert solution for one dimension wave equation..
- Derivative identity
- numerical integration
- Second Order non-linear ODE
- Green's function for homogeneous PDE
- Integration of bessel function
- Finding basic solutions to a PDE??
- Total absorption through medium along ray
- Question of damping vibrating strings
- Boundary problem
- solution to ordinary differential equation
- Laplacian = tr(H)
- Bessel Differential Equation With Log
- mathieu oscillator: parametric resonance
- Is the following gauge transformation possible?
- Any idea for this nonlinear equation?
- Inequality satisfied by solution of a Dirichlet problem.
- HIghly oscillatory solutions
- Help! How to get green function of Bessel's differential equation?
- Is this equation solvable and if so, how?
- Is D'Alambert solution important for studying PDE?
- Pollard Tenenbaum ODE Book?
- differentiation wrt time
- Green function question
- Solving Fick's Law by Finite Difference Method
- Why the book call f(x+ct) and f(x-ct) odd extension of D'Alembert Method?
- Close to Sturm-Liouville form....
- how to integrate an ordinary differential equation around a singular point?
- How to prove uniqueness (or non-uniqueness) of solution
- boundary conditions for Alternating directions implicitly method
- Differential Equations WTF?
- Nonhomogeneous Help on guessing
- PDE 1-d heat equation
- Complementary and particular solution of a ODE
- Runge Kutta 4th order with Derive 6?
- Diffusion PDE solve
- Inverse spectral problem
- Numerically Solving ODE with Lagrange Multipliers
- SOLUTION Multivariate SDE with repeated Eigenvalues
- Frobenius Solution
- Looking for General solution for a difference equation
- modified heat equation in n dimensions
- explicit representation??
- Is this Linear?
- Integrating exp(k1*cos (t + k2)) from 0 to 2*pi
- What is the "jump condition"?
- Can I solve this as a differential equation? (radioactive particles)
- Any hope for this PDE? Diffusion in population genetics
- Overdetermined SDE and other problems
- Perturbation method for solving IVPs of ODE
- second order
- Systems of Linear Homogenous Differential equations with Constant Coefficients
- Matrix Differential Equations
- DEs to model food, oxygen, and hydroponic plants
- Question on solving Poisson's Eq using method of Super Position.
- Solving differential equations using implicit methods
- solving ordinary differentiable euqation with sl(2)
- Heat Balls
- hindmarsh rose model with delay (dde)
- confused with square root ODE
- Undetermined Coefficients of Difference Equations
- Iterative Systems of Difference Equations
- Lorenz Equations
- 2nd order non linear ODE
- Stochastic Diff. Eqn.
- Solving a differential equation by integration
- Is it considered lame to use a CAS when helping people in the DE forum?
- Heat equation (cylindrical)
- Gamma Function
- 2nd order Boundary Value Problem.
- Painleve analysis
- A second order nonlinear ordinary differential equation
- Solving 2D Poisson problem with a single series!!
- Boundary Value Problem for the 1-D Wave
- Question on Variation of Parameters
- Non-linear Differential Equations and Psuedo-randomness
- How to choose step length in numerical methods?
- Solving Linear Second order diff eq with Matrices
- Investigate uniqueness of the differential equation
- Perfect Differential
- ADI FDTD: How this Peaceman Rachford splitting is derived?
- why the green function is useful?
- 1D advection-diffusion--need to check my code; any suggestions?
- Heat eqtn with Generation term
- analytical approximation
- first order nonlinear
- Difference equation
- how to rearrange the equation?
- laser rate equation modeling
- Laplace transform and nonlinear equations
- Transfer Matrix Method of DFB laser
- Laplace Transform of Bessel Diff Eq
- Modal amplitudes of circular plate
- Limit Cycle
- 2D poisson equation Help needed
- reducing to bessel equation
- Roots of a derivative
- Mass conservation in radially symmetric parabolic PDE problems
- 2nd order nonlinear DE
- Torricelli's principle
- Heat equation
- ODE/PDE's in Matlab
- differential equation
- Matlab field (quiver) plot and gradient
- Please Help ................... Urgent
- Weber differential equation
- need help with PDE application's in mechanic
- what is the integral of dydx=y^2/x^2
- Difference expressed as integral of differential??
- How do you combine Bessel functions?
- System of second order linear homogenous differential coupled equations
- Crank-Nicolson vs Heun's method
- When can seperation of variables be applied?
- How to state an equation of rational functions that has Asymptotes?
- how to define neumann boundary in matlab?
- First Order Autonomus ODEs
- motion of a particle
- Characterstic Curves and domain of dependence
- Need help finding a derivative
- 1st order ODE with sampled function
- Linear 1st order coupled DEs
- Solving ODE using Fourier Transform
- Evaluation & visualization of double differentials in Mathematica
- First order PDE help
- Tough Differential Equation (for me at least, and some others)
- Secondary differential equation
- Please Help in this 4th order
- qualitative behavior of the solutions of a linear diffrential equation
- 2d damped wave equation
- Laplace Inversion
- Marshak Wave.
- first order partial diff eqn
- Forming a new solution of ODE
- From a System of 1st ODE to a 2nd ODE and back to the system of 1st ODEs
- Verify Gamma function, not a homework problem
- Help me in solving this equation
- Laplace equation
- integration
- solving second order non linear PDE
- Analysis of system of three
- Solve a system of second order PDE
- Bessel Function, Orthogonality and More
- Duhamel's principle
- second order DE involving repeat roots
- Stiff- One-Dimensional Poisson Equation in Plasma
- Velocity in D'Alembert solution is the same as virtical velocity?
- differential operators - the rules
- Klein-Gordon PDE
- Easy ODE
- What's the difference between these differential operators?
- Symplectic Integrators
- Second Order Inhomogeneous ODEs
- Tough wave energy integral
- a laplace transform question
- Hermite's Equation
- Need help with nonseparable differential equation
- What is the meaning of the wave equation.....in English??!!!
- Confused on partial differentiation.
- second order differential equation
- Asymptotics Book Recommendation
- Guidance sought with numerical ODE solution
- Solving fourth order differential equation (URGENT)
- Compute Laplace Transform
- Find solution with initial value
- Laplace transform please help!
- Question on ODE's with roots of multiplicity.
- Riemann problem
- Can anyone suggest to me a method to solve the following?
- How to solve this DE
- Differential equation help...
- Transforming a DE into Bessel's Equation
- Cauchy prob.
- Domain of solution to Cauchy prob.
- constant solution
- inequality for solution
- Find general solution
- Silly DE Equation
- Question about Laplace(Potential) equation of disk.
- Heaviside function
- second order nonlinear ODE -- not autonomous
- Heat equation
- Gerschgorins theorem in eigenvalue problem
- Filter problem
- Question Fourier half range expansion of function on 0 < x < p
- J.J Thomson's determination of of the ratio m/e
- Laplace transforms
- Steps for solving ODE
- Exp(sin(t)) integral difficulty for 1st order ODE
- Derivation of equation for Phase-modulation fluorescence
- Question on Dirichlet problem in cylinder with radial symmetry.
- Divergence in spherical coordinates
- 140-year-old Boltzmann equation solved
- inhomogeneous wave equation: physical interpretation
- ODEs with variable coefficients
- Challenging:How to Solve 2 Non-Linear ODEs?
- Hop maximum principle
- Green function for KG equation
- d'alembert solution Help (easy)
- Partial differential equation reduced but ...
- Spring equation.
- Problems with Runge-Kutta method
- Laplace transform proof
- Heat Equation - Maximum Principle proof
- Boundary Conditions for 1D heat flow in Wire with source
- Maple-ODE-problem
- Can anyone explain this regarding to fourier series and bessel series expansion?
- Solution of ODE
- Is (sinx)/x analytic at x = 0?
- Differentation of Partial Derivative with respective to high order
- When to use 'ln' in integration?
- Green's function for Cauchy-Euler equidimensional equation
- ordinary differential equations involving matrices
- Is the question solve y'' = x^3/y a misprint?
- Scattering off two centers
- Solving Dirichlet BVP by Eigenfunction Expansion
- Hirsch and Smale Stability Definition Confusion
- Laplace transform of function with independent variables OTHER than time
- Coupled Differential Equations
- Behavior at zero and at infinity
- Inverse Scattering Transform/KdV eqn
- reduce to ODE using separation of varialbles
- Boundary Value Problem + Green's Function
- tricky nonlinear pde in matlab
- Solution to tensor differential equations
- tricky nonlinear pde matlab
- can anyone help with eigenfunction?!
- [urgent] Eigenfunction again!
- Having trouble solving this diff eq
- Urgent - important question regarding SSFM
- Discontinuous driving function
- Fredholm Integral Eqn of the 2nd kind
- Almost Kummer's Equation
- second nonlinear DE for exciton diffusion
- Charpit equation~
- Please help integration using rodrigues formula.
- Curve of Pursuit
- equivalent
- a system of linear PDEs
- Matlab and ODE's
- Simple existence/uniqueness proof for Newton's 2nd?
- Boltzmann equation
- Question on orthogonal Legendre series expansion.
- Want to confirm Legendre polynormial can only have +ve degree
- Second order ODE
- Bessel functions solution
- Tips on good N-L-ODE
- Ode
- 2nd order PDE characteristics
- What is the inverse laplace transform of this?
- Finding an exact solution using an integration factor
- Nonlinear ODE system
- Frobenius method solution for linear ODE
- Finding solution to second order non linear dif. equation with IV
- Laplace Transform of......
- A system of 1st order nonlinear differential equations
- General Solution to 2D Nonlinear Helmholtz Equation
- Stochastic Differential Equations and Quantitative Finance
- y'=1/(x^N+1)
- finding particular integral:
- Please help in integration of Associate Legendre function
- Second opinion on ODE interpretation sought.
- Inverser Fourier Transform
- Help with Differential equation for Spherical Harmonics.
- Jacobians, PDEs
- wave function on slope potential
- Solving non-homogeneous differential equation with variable coefficients
- Globally defined and unique solutions.
- Weakly nonlinear theories in electrohydrodynamics
- Ideas for PDE Project (Physiology Theme)
- How to solve for this differential Equations Analytically
- First order ODE IVP use in Heat equation of ball with heat source.
- Heat transfert + Air convection, setting proper equations
- RC circuit differential equations
- 1st order PDE through Method of Characteristics
- NDSolve wave pulse propogation
- Bifurcation diagram
- anomalous differential equation
- Kummer's function scaling
- Question on Spherical Bessel's equation.
- Addition Theorem for Spherical Harmonics
- Help with Poisson problem in a unit ball.
- 1D wave equation open boundary
- Vorticity equations
- Help with System of nonlinear DEs
- The Alternating Direction Implicit Method in 2-D
- Puzzled by A coupled system of PDEs
- Characteristic curve for 2D transient conservation
- Splitting PDE into system of PDEs
- Asymptotics of a linear delay integral equation
- how to solve this nonlinear differential equation numerically?
- Hom. heat equation in cylindrical coordinates using Fourier & Laplace transforms
- first order differential equations
- Equilibrium temperature distribution in 1 dimension rod
- Help with Poisson equation in irregular mesh
- Well posedness question
- 4th order Runge Kutta method for 2nd order ODE
- Cayley-Hamilton theorem for Operator
- Factoring Legendre function?
- solving differential equation with a constant
- How to convert 6DOF to single or 2DOF?
- RLC circuits problem
- Separation of variables for second order DE
- Solution to advection equation with variable coefficients
- Help toward solving second order non-linear differential equation
- fourier transform of laplace operator
- Position as a function of time throught a varying gravitational field
- Homogenous Functions
- inverse laplace transform
- singular linear ODE eigenvalue problem
- Application of perfectly matched layer transformation to second order derivative
- Ode
- Verifying Bessel's Differential Equation
- Solving Dirichlet problem using Green's identities.
- A problem about laplace
- Dirichlet and Neumann problem.
- Symmetry in Landen's transformation in elliptic integrals
- differential eq without multivariable?
- Finding area of ellipse using line integral.
- Boundary value problem
- Coupled First Order Equations
- Laplace Transform - what are some applications?
- exponential integral
- Question about function defined in a region using Green's identities.
- Local constants of motion?
- What is the meaning by a function with continuous 1st and 2nd derivatives?
- Dx/P = dy/Q = dz/R
- Odd result from an eigenvalue problem in the Euler equations
- Is equation of line or curve in 3 space have to be a parametric equation?
- Separation of variables technique - When is valid? (and other questions)
- Two dimensional Poisson's equation, Green's function technique
- Singular Solutions
- Nonhomogeneous Second Order ODE containing log
- verify Harmonic function and Laplace equation.
- Second Order Differential Equations in MatLab
- Very easy question
- NDSolve Quirkiness - Updating the initial conditions after each step?
- How to solve this nonlinear PDE??? Please help!!
- r’’(t)= -GM/(r(t))^2 =>r(t)=?
- Laplace Transform
- Introduction to substitutions
- solve the given differential equations or initial-value problems
- Question on why the book claimed Green's function =< 0.
- Linear wave equation with moving point source
- Green's identity help.
- Are dy and dx in dy/dx independent? Please help
- nullcline definition
- Solution to Second Order Coupled PDE in x,y,z, and time
- Numerical method to solve ODE boundary problem
- convolution of exp(-a*norm(x)^2) and exp(-b*norm(x)^2) ?
- Solving the diffusion equation finite difference technique
- Very interesting problem...
- Fluid solver?
- 2nd order homogeneous
- Hamilton-Jacobi Equation
- 2nd order nonlinear differential equation
- 2nd order PDE (I think?)
- Critical points of a Hamiltonian system
- Two ODE's
- Free damped pendulum solution : closed form
- maximum principle
- Nonlinear DE (with e^t) !?!
- Partial equation problem
- how to deal with this Neumann boundary conditions?
- Constant Coefficient Differential Equation
- Interval of Definition
- Normal derivative of Green's function on a disk.
- Second order ODE
- integration by parts difficulties
- Mathematica
- Want to clarify polar, spherical coordinates.
- Final condition instead of initial condition
- 2nd ODE, Reduction of Order, Basis known
- Property Function exp
- 2nd ODE, unique solutions
- Bernoulli Differential Equation
- Inhomogeniouse System
- Need help for solving a set of differential eqns
- easy and quick question
- Variable coefficient Wave Equation
- Euler Equation, Arcsine
- Finding values in Maple pdsolve plot
- Frobenius method questions
- Initial speed of object sliding to a stop w/ air resistance
- General question about Maple's capabilities with Laplace transforms
- Wronskian
- Using calculus to verify..
- Finite element method coursework?
- Help plz
- Pi's connection to e, and its ubiquity in math
- Normal derivative in a sphere.
- A problem with integration of modified Bessel function
- Polynomials, Kernels and Derivatives
- Differential notation
- Integrating Factor (Derivation)
- Numerical evaluation of modified Bessel equation
- How do you explain this, Equation?
- Inverse Laplace Transform
- Differential Eq using Substitution help
- Sturm-Liouville Like Equation with Boundary Conditions on Second Derivative
- Advantage of poincare method?
- Mathematica and Variation of Parameters
- Help with a Helmholtz-like equation
- General Solution to Linear, Homogenius, Second-Order Differential Equation
- Exact equations
- Dalamber equation
- Nonlinear Elasticity
- Can't remember how to do this simple definite integral...
- Applying Green's Formula in 2D
- Spring Damper System
- maximum principle for Delta u >0
- Which type differential equation is this??
- Eigenvalues of D.E
- Exact solution to advection equation in spherical coordinates
- partial differential equations
- ode 45 (matlab)
- finding the degree of a deferential equation
- General Method of Characteristics Problem
- Two coupled Sturm-Liouville Eigenvalue Problems in 2-D
- Laplace transform physical meaning
- Solving the simples Partial Differential Equations
- Differential equation
- statistical differential equation
- Derivatives and Partial Derivatives
- 1st order nonlinear ODE
- Flicks diffusion equation - metabolism rate
- Signal Compression: Laplace vs. Fourier
- Help with solving a first order linear and first order non-linear
- What kind of ODE is this?
- No Constant Solution => No periodic solution
- Why is the right side called the "input?"
- Mathematica: 2nd order PDE variable coefficients
- Maximum principle for the Heat Eqn in R^n
- ODE with Neumann Bound
- Bifurcation of this Function
- Can someone tell me exactly where my simple logic breaks down? (infinity \neq 1)
- fundamental solution to the radial wave equation
- Non-linear Differential Equation - Pulling my Hair !!
- Amending function in LBM equation
- About Duhamel Principle in Wave Equation
- Laplace Transform ODE
- Material for learning finite difference solution to Hamilton-Jacobi equation
- Need help with ODE applicaiton questions
- Help with this PDE
- Integral over a Hankel function
- Ballistic trajectory with drag
- Necessary, I need Ode pls enter
- (y')^2+y^2=-2 why this equation has no general solution ?
- Linear Differential Equation: when x=x(y)
- Please help with this hard question
- Solve third order, non-linear, ODE with indefinite BC's?
- Solving a non-homogeneous ODE with Bessel functions?
- Theoretical Question: how can complex solutions be allowed?!
- Method of Images - Green's Function
- Continuity of partial derivatives
- integrating product of bessel function,please help!
- Critical Points and Differential Equations!!! Helppp
- how to solve y [SUB](i+1)[/SUB] = y [SUB]i[/SUB] - (h*a*y_i)
- solution of differential equation
- Non linear finite differences
- need help to solve y'=(x^2+y^2)^(3/2)
- Laplace Transforms (First Order DE with Initial Value)
- Differential Equations problem
- Solve Differential Equations problem
- Spring and Damper in series
- integration bessel function (simple)
- How to prove the derivatives of powers?
- Coupled ODE with missing connecting derivatives
- asymptotic behaviour of bessel functions
- When is a simple assumption not so simple?...
- Non-Homogenous Heat Equation
- Types of boundary condition
- translation secon ODE
- Solving Non-linear System
- 2nd order ODE to 1st Order
- Matlab ODE45 Help??
- Differential algebra
- Method of Images again
- Power series when to use Frobenius method
- Solving PDEs involving complex variables
- Meaning of each element inside a Fourier Matrix?
- Euler D.E.
- Simple Differential Equation
- What is the meaning of LaPlace and Poisson's equation in English?
- Solutions to diff equations
- Need explanation on convergent
- Frobenius power series repeated roots
- Laplace Transformation
- Diff EQ Artwork Project
- finite difference terms for boundaries
- Please verfiy this differential substitution is mathamatically legal
- implicit differentiation in matlab
- Whats a non-trivial linear combination of these functions?
- y' = ay-b*y^2-c*y*x; x'=d*y^2
- Can I solve a diff. eq. this way?
- 'decic' function in matlab for solving implicit equations.
- How to solve this coupled nonlinear equation?
- finite difference method, coupled wave equations, chickens & eggs
- What is an auxiliary equation
- Change of variables in Seocnd order ODES
- Random Forced Exponential Diff Equations
- how to use Euler's method to solve this equation
- Method of Frobenius with exponential coefficients!
- First Order Differential Equation in Cylindrical Coordinates
- Odd Elliptic equation
- Particular Solution
- Solving DAE in matlab.
- Modeling with First ODE
- Crank Nicholson scheme
- Simple Differential Equation (Ordinary Differential Equation)
- Laplace transform for system DFE
- Nullclines
- General solution to third order differential equation
- Shooting method vs. finite differences for BVP
- Inexact DGL, integrating factor
- Modeling this differential equation
- Dirichlet's problem is ill posed...
- Runge-Kutta for sovling 2nd ODE
- Confused about the theory behind Frobenius' Method
- S-function! in Simulink/Matlab
- trying to generate turing patterns for brusselator equations
- Extension of Variation of Parameters to First Order Non-Linear ODE?
- Phase angle from graph
- Method of undetermined coefficients
- Series solutions to ODEs
- First Order ODE
- How to derive Euler DE for n=0
- 2nd order Differential Equation
- How to apply fourier transform
- Unknown Inverse Laplace Transform
- how to calculate this integral for harmonic function?
- Green's function
- a question about no linear first order pde
- Question about zero input frequency response
- Runge-Kutta problem
- Help with population of various isotopes in decay chains (Bateman equations)
- Can the Jacobian be used for out of plane rectangles?
- Traffic dynamics (traveling wave)
- Existence of a solution
- extended version of associated Legendre eq. Can I use the Frobenius method?
- Trying to get some geometric intuition on differential equations
- General 3rd order DE question
- integrating factor
- Error function as a solution to a second order ode
- A question on Girsanov theorem
- Notation for separable partial differential equations
- Question on PDE (transport problem)
- Solving second order system
- Differential Equation with 4 states
- 2nd order nonlinear imaginary partial dif eqn
- Combining Rate Equations
- System of 1st order nonlinear PDE's
- Help with Heaviside unit functions
- initial value problem for system of two diff. equation
- Exact Differential Equations
- constant Wronskian
- Series converges to a function that satisfies the wave equation
- Showing that x and 1+x² are solutions to this DE
- Crazy ODE, can it be solved?
- Adaptive Stepsize control for Runge Kutta
- runge kutta
- separation of variables on upper half-plane issue
- Positive implicit FDM ?
- Completing the unit circle
- Initial Condition Problems with Heat Equation in Mathematica
- heat equation
- Governing Equation for Motion of a Thin Plate - DIFFICULT TO SOLVE~!!
- Differentiating Planck's radiation law
- Laplace & Convolution theorem
- Critical Points in a system of differential equations
- Matrix Differential Equation with Generalized Eigenvectors
- Riccati's ODE variant.
- Central Difference Scheme
- General solution question
- separate the equation
- Pde
- Help me solve this differential equation
- Why the domain of a DE solution must be an interval?
- Double integral equation
- need help, impossible differential equation
- Asymptotic behavior of coefficients
- Existence of soliton solution
- How to use of the method of undetermined coefficients
- Resonance
- Autonomous polynomial differential equation
- Linear approximations around a given fixed point.
- Caratheodory existence theorem
- Classification of partial differential equation
- Bessel function
- One fundamental property of Fourier Series
- Solving Linear Second Order PDE with Mixed Derivative Term?
- elliptical coordination
- How to find y
- Solving Trivial Second Order ODEs
- Linearizing ordinary differential equations
- How I solve this system?
- the integral of the taylor expansion of any expression
- exact equation
- Continuous/differentiable functions
- 3D stationary Schrodinger - numerical solution
- what are some good intro to differential equations books?
- PDE: No boundary conditions?
- Linear differential equation; Green's function
- Inner Product
- Problem in finding relationship of ordinary differential equ
- Some problems in Matlab
- Solving System of Non-Linear Diff. Equations
- software for crank-nicholson method
- Asymptotic analysis
- What does "over determination" mean?
- Adomian decomposition
- Convergence
- Is this equation right?
- convergence of ode & pde
- HELP! change of variable
- Unsuccessful attempts to solve a linear second order PDE system ...
- Poisson equation: what shape gives largest area average
- Methods to linearize terms of PDE
- Integrating Factor
- HELP PLEASE!!! Quick and simple!
- Seperable DE
- Maximization Problem
- Proof Partial Derivative definition
- simple differential equation question
- Question on proof from Arnol'd
- Numerical Boundary Conditions for Fokker Planck and Kramers equations
- Solving ordinary differential equation
- The Existence Uniqueness Theorem
- Textbook Recommendation Needed
- could you help me solve first order diff eq?
- Second-Order Nonhomogeneous DE
- Trouble with "The Snowplow Problem"
- Asymptotic Behavior of Solutions to Linear Equations
- Need help solving simple Differential problem (help)
- What calls this error which is related to numerical solution of ODE by Euler method
- BVP with a boundary condition thats depends on a unknown.
- matlab ode45
- Coupled first order differential equations
- Divergence Theorem
- Asymptotic behavior of coefficients
- Arnold ODEs, definitions
- Arnold: ODEs, Ch. 1, section 2.2
- High permormance symbolic computing
- 5-point discretisation problem
- Scaling parameters in central difference solution
- Help required with BVODE
- Existence of solution for R+
- solving a differential equation of epidemic model but not getting the right answer!
- An applied math question
- Tests for symmetry of and ODE
- ? solution of ( dy / dx ) + ( y / (sqrt(a+(x^2))) ) = 0
- Can you help with this 2nd-order, linear, homog, w/const.coeff proof?
- Coupled diffusion equations code
- On differential equations texts
- The connection between variational principle and differential equations
- PDE with non-constant coefficient
- Advice on a "great" self study book. PDE
- Runge_kutta_in_optimal_control
- MATLAB ODE programing and misc question...
- Basic PDE help
- y'' + 4y = ax + b how can i solve?
- Solving a two-component linear ODE system with time-dependent connection matrix
- Euler's formula & expressing combinations of sin and cos as cos
- Solving a PDE
- I don't understand this one specific step in solving this pde
- coupled system of linear elliptic PDE
- Why Laplace transform seems to give a wrong answer!!
- Maple integration: 8 equations using final values of first 4 to solve second set
- Adomian decomposition
- What kind of PDE loses information in time?
- who knows the original publication of Laplace transformation by Laplace?
- A quick explanation of stability?
- Solution to a DE using variation of parameters
- Brachistochrone with Friction
- Heat Conduction of Metal Rod (Differential Equations)
- Helmholtz 2D PDE around general shape (eg a figure 8)
- Second derivative of an autonomous ODE
- Neumann Condition on Curved Boundary using Finite Difference
- Eigenvalues of Linear Time Varying systems
- 3rd order ODE with B.C of numan and dirichlet type with another 2nrd order derivatiiv
- Implicit Runge-Kutta method
- Wronskian
- Solving PDEs using Fouries Series ???
- 2 Dof coupled nonlinear ODEs
- Laplace equation on square (using fourier transform)
- Coordinate transformation
- Derivative, to minimize
- Investigate the possibility of straight line solution
- modeling diffusion through two layers
- Finding a general soution to a differential equation
- Black-Scholes Research Problem
- Finite Difference Discretization of a Fourth Order Partial Differential Term
- Simultanious DE - Kinetic Reaction
- help! simple 2nd order linear ODE
- Approaches to Runge Kutta step size adjustments
- Why a PDE is an infinite dimensional system
- What does it mea for an equation to be homogeneous?
- First order non linear ODE
- 4th order linear, with constant piecewise coefficients
- 1st order nonhomogeneous dif'l e'n
- Problem with Crank-Nicholson for solving hyperbolic equations
- Differential eqn
- Airy equation
- Euler Lagrange equation - weak solutions?
- Nonlinear ODE, Howto attack....
- Laplace Transform of DE with Discontinuous Forcing Function
- Lax pair
- variation of parameters and the constraint
- Homogenous constant coefficient linear differential equations
- Mathematica modelling question
- Help with conversion from rectangular to spherical coordinates
- Need some help with 2D PDE
- Need some help with this D.eq. please!
- Probably a basic DE
- How are Differential Equations usually found in real world applications?
- Solving Diffusion PDE By Finite difference Method in fortran
- Coupled Second order odes
- Variable Coefficient Differential Equation problem
- Completeness of Legendre Polynomials
- undetermined coefficients
- Inhomogeneous Wave PDE
- how to solve this nonlinear bvp?
- system ODE, nonconstant but periodic coefficients
- Functional minimization
- A Laplace's Equation question
- spherical laplace question
- Vectorizing diffusion stepping
- Reduction of Order Problem
- flexible rope equation
- Bony's paraproduct and paralinearization
- Undamped force oscillation formulas
- Shallow Water Equations and Initial Conditions
- Test for Exactness, linearly dependent?
- Trying to find the Green's function of a PDE
- Modeling with higher-order differential equations. Free undamped motion with spring
- Second-order, linear, homogeneous, hyperbolic PDE. Solvable?
- help for reaction-diffusion question, R-D-D with reaction function
- help for reaction-diffusion question, R-D-D with reaction function
- How i find the adjoint operator i several variables
- Could anyone help me out for this Boundary Value Problem?
- Where can I find proofs for d. eq solutions?
- CP of this system
- Using chain rule to derive the path equation
- Eigenvalues of Laplacian on parametric surface
- simple PDE
- Differential equations
- Can anyone solve this ODE?
- Continuity of the blow up time
- Order of Calculus Classes
- Power series solutions for ODEs. When are there how many of them?
- Differentiating complex numbers?
- Wave equation and superposition
- Convection diffusion equation
- anharmonic oscillator
- Usual convention for proving differential equations
- Understanding Eigenvalue Problems
- 3-body solution in two dimensions
- Laplacian Transform
- Romeo and Juliet
- Painleve analysis
- pls help me to check the answer
- DIfferential equation for understanding cosmological expansion - need help
- cauchy-riemann using polar co-ordinates
- 2-D Poisson's equation - Green's function
- Von Neumann stability analysis
- Integro Differential equations Using Matlab
- Basic PDE Heat Equation - Request for help
- Falling Raindrop - Evaporation and - Diff Eq project
- 2OLE Variation of Parameters
- DEFINITE integral of sinaxsinbx FROM 0 to infinity
- Discrete version
- Poiseuille Problem - Variational formulation
- Definition of variable coefficients in linear differential equations
- Maximization problem of tuple set
- Integral simplification with dummy variable "s"
- Is the differential equation solvable?
- how to find the steady state solution
- Help Using Heat Kernel and Convolutions
- PDEs solved with Separation of Vars., Method of Characteristics. What else is there?
- tough ones
- Bessel type differential equation
- Hermite polynomials
- Neumann Boundary Conditions for Heat Equation
- poles
- laplacian VS gradient of divergence
- Is this an acceptable method to solve a convectihe heat equation???
- Getting 1st order ODE's from a 2nd order ODE
- Series expansion
- Question about a Riccati type diff eq.
- ODEs: basic concepts quiz (Teschl)
- Question about a Riccati type diff eq.
- Second-harmonic Generation with phase mismatch, is there an exact solution for it?
- Autonomousnessness
- Safety of small angle approximations
- Wave equation on the line
- Is there a general method for solving advection-diffusion equations?
- System of nonlinear ODE
- What is a Lagrangian here?
- Point to Greens Function?
- Painleve analysis
- PDEs: Separation of variables
- Diffrential equation subject qs
- Is this pde analytically solvable?
- Differential Equation
- Unique solution on an interval
- Need help with this DE
- Solving Diffusion equation with Convection
- solving pde with gaussian function
- basic question about vector fields and coordinates
- Understanding Positive invariance
- another basic question
- Weird differential equation
- CFD equations
- Multi-region Finite Difference- Interface between materials
- inverse laplace transforms
- Mathieu function
- Coupled differential equations
- some questions for non/homogeneous equations
- Euler method in c++
- Crank-Nicoslon scheme and nonlinear boundary conditions
- Need help with this equation!
- coupled and decoupled
- PDE with moving boundaries
- coupled partial differential equations
- Building inhomogeneous heat eqns
- Non-linear integral equation
- Nonlinear Analysis of Reaction Diffusion Equations for Turing Pattern Selection
- Simple partial derivative
- 2nd ODE question
- Reduction of Order ODE - Stuck on question!!! Help Please!!
- Help! 2nd order ODE totally clueless
- Something that can't be right about eigenvectors--where is my mistake?
- 2nd Order Diff Eq
- What does this inhomog. wave eq'n mean??
- Paper buckling and 2nd Order NL ODE
- 2nd order differential equation in Reaction Engineering
- Diffusion equation without initial conditions
- y''+y'=x
- Lorenz Attractor in Real Time
- Derivative of second order integral
- system of second-order autonomous ODE
- Help please
- ODE with mirror functions
- Domain of differential equation
- lax-wendroff scheme
- where is the mistake?
- Advection equation and Crank-Nicolson
- How do i integrate this? Am i doing it right?
- ODE Theory books
- Transient heat transfer 2-D cylindrical
- Fokas Transform
- Initial Value Problem using Laplace
- Analytical solution for heat equation with simple boundary conditions
- on the trail of Andronov...?
- unique soution of this 2nd order diff equation.
- A simple wave equation
- Simple Sturm-Liouville system resembling Associated-Legendre equation?
- Units in the Navier-Stokes equation
- Runge Kutta Input
- Dynamical systems question
- Please check if this solution is correct
- Crank Nicolson Stability
- Nonhomogeneous ODEs that can't be made homogeneous?
- PDEs and Fourier transforms - is this problem too difficult?
- Does this eigenvalue problem has degenerate solutions?
- How would you classify this Excitation Force?
- Inhomogenous NON-linear differential equation
- Physically, what is the difference between systems of ODEs and PDEs?
- Using Mathematica to solve 2nd order system of nonlinear ODE's
- finding the lowest eigenvalue, Rayleigh-Ritz method, Calculus..
- Help! Applications of Differential Equations to Escape velocity
- Taylor Expansion of Gradient
- phase portrait direction clockwise or anticlockwise?
- Wave equation with forcing
- how to solve dy/dt=ay-b
- firs-order linear equation with reversed role of independent and dependent variable
- Finding the points on an ellipse where the slope of the tangent line equals 1
- Linear ODE Solution Existence
- stencil in finite difference
- Finding partial derivative with 4 unknowns in 4 equations
- Question about Sobolev Space
- Diffusion Equation and variable of Similitude
- Solving a 2nd order ODE in MATLAB
- Method of Undetermined Coefficients
- 2nd order ODE with Sin function.
- fundamental theorems of ODE
- General Solution of the first order differential equation
- General Solution of the first order differential equation
- General Solution of the first order differential equation
- Setting up Fick's Law with Internal heating
- Switched LTI systems
- Coupled system of 1st order PDEs
- Phaseline & Equilibrium Points
- anyone can describe how euler's method works?
- A Question about Non Linear Differential Equation
- Runge Kutta -coupling problem
- pls give me an example
- Cauchy vs. Dirichelt/Neumann Condition for PDE
- Finite Difference method to solve PDEs
- System of ODE for functions with different origins
- Complex Trigonometry/ODE
- 2nd Order Non-Linear DE
- integral equation with endpoint singularity
- Help with ODE
- Spatially averaging the Navier Stokes equations on a multiply connected domain
- What is the best numerical method for...
- steady state model for a pressurized vessle
- Trouble using RK4
- Moving boundary problems
- can someone explain this step in the proof of the convolution theorem?
- Solving Systems of Linear Differential Equations
- Integrating Factor and absolute value
- Aren't many implicit methods actually explicit?
- Picards Existence and Uniqueness theorem doesn't prove anything
- Why are they called "differentiate" & "integrate"?
- 3D Schrödinger Equation for a magnetic vector potential in cylinder coordinates
- Does this differential equation have a nice solution?
- Help with Greens functions
- Solving rate equations with RK method. Don't understand how.
- ODE System Help
- Hyperbolic equations: domain of dependence
- PDE : Can not solve Helmholtz equation
- Trying to get this PDE in terms of 'y'
- Help with Tank problem-- NOT TYPICAL
- Solution for a nonlinear PDE
- Can I use Separation of Variables like this? (3 terms)
- stochastic ODE
- Pointers for the solution of 2nd order DE with variable coefficient
- looking for a rectifying chart
- How to visualize diff eq?
- 1D diffusion equation
- Laplacian
- Differential equation in Annulus
- about bessel function integrals
- Notation "(v*gradient operator)v" in Navier-Stokes
- non linear 2nd order ode not able to solve
- Analysis of two variable Non-linear difference equation
- How to prove: Uniqueness of solution to first order autonomous ODE
- Very Awesome Nonlinear ODE
- Variation of Parameters
- Numerical FDM - wave equation - boundary conditions question
- Trouble with a diff. eq.
- How can I learn special functions and differential equation
- Non-homogenous ODE, non-homogenous boundaries
- Determining Weight Functions
- Odd Differencing Method for Solving DE
- Analysis of spatial discretization of a PDE
- Another non-hom. diffeq
- Book Recommendation - Introductory Differential Equations
- examples of system of linear differential equations with periodic coefficients
- Problem with finding an Inverse Laplace Transform
- Help on Mixing solution from two tanks problem
- Mathematical LogicNumerical AnalysisUndergraduate MathAlgebra HelpRecreational Math M
- 3rd order ODE
- Stuck on inverse fourier transform pair
- Change of variable for leibniz notation
- It might simple to you, but i'm stuck.
- How to solve this equations? Explicit or implicit?
- Multi-Variable Second Order Taylor Series Expansion, Ignoring SOME second order terms
- Initial Value Problem
- Optimization problem using exact Hessian
- Inverse of Interpolating Function?
- unit problem in differential equation
- fourth order Runge–Kutta in C# - two differential equations
- Nonlinear dynamics bifurcation
- Approximation of Integral of arbitrary functions, containing a deriv, cross discont
- differential operator + linearity proof
- Matching orientations of 2-d arrays of values -- using fft?
- How do the "d" terms in differential equations work?
- Numeric solution for nonlinear (stiff?) ODE - Mathematica syntax problem? (NDSolve)
- OutputFcn in ode45
- finding a solution of this PDE
- Voids
- Classification of fixed points of N-dimensional linear dynamical system?
- Power series method and various techniques
- Characterisitics of a Parabolic PDE
- Laplace Transforms
- get the derivative with MATLAB ode45
- example of stochastic differential equations
- Calculus of Variations
- Second Solution to Bessel's Function of order zero
- Lane-Emden Equation for non conventional EoS.
- limit properties laplace transform
- Calculating the gradient of a surface
- Coupled Harmonic Oscillator or coupled Sturm-Liouville problem
- Similarity Solutions BVP
- Quick question about Differential Equations.
- Geometric Level Set Methods
- Help with initial value problem(IVP)
- Creating a RL/RC/RLC Circuit model
- using BVP4C for overdetermined system
- Is there more than one Crank-Nicolson scheme?
- second-order non-homogeneous linear differential equation
- Solving a PDE using multiple transforms
- Consider the second-order linear homogeneous of differential equation.
- What is needed from calc III for PDEs?
- periodic functions (or similar)
- How to solve ODE for independent function
- How many B.C. are necessary for first order PDE set?
- Non-linear Schrodinger Equation (Differential Equation)
- Having trouble understanding
- Solving nonlinear ODE with ODE45 fails at bifurcation point?
- PDE cauchy question
- How to calculate elliptic integrals in MATHCAD?
- Need help for Ito Isometry proof
- differential eq with square root numerical
- physical significance of dot and cross products in electrodynamics
- From dy/dx to d/dx
- Meaning of k in D. E. problem
- Help on optimal control problem
- Spectral Method for optimization
- Assumed solution for the Laplace EQUATION??
- differential equations: y’= sin(cx) sin(yx), y(0)=1
- Equilibrium solutions in mathematical modelling
- analytic function definiton
- Trouble Solving a Diff Equation
- Separable equation constant generality.
- Homotopy Analysis Method (or Homotopy Perturbation Method)??
- Function composition in finite differences
- MATLAB help-ode45
- Partial differential equations , rearranging and spotting
- ordinary points, regular singular points and irregular singular points
- partial diffs help please!
- Second derivative - wolfram giving one answer, professor giving another
- Steady-state HELP!!
- Change of Variables
- WKB asymptotics
- Differential Equations : Solution Curves
- Trouble solving a differential equation
- Model involving SOD of two variables
- Laplace transform
- Help with the numerical method of characteristics
- Cauchy problem, method of characteristics
- Finding Dispersion relation
- Taylor series and the forward finite difference method
- Implementation of Schroedinger's equation - mathematical concepts.
- analysing Lotka and Volterra equation (ODE)
- Second order, nonlinear differential equation help
- Principle of superposition for a particular case of liner differential equation.
- First order nonlinear differential equation...Help needed.
- Existence and uniqueness of PDEs
- Finding the damping ratio (zeta) of an nth order system from a transfer function
- schrodinger equation
- Transition to Graduate PDEs
- Inverse Laplace Transform
- Solution of nonlinear difference equation
- On First Order Non-linear PDEs
- Relationship between two solutions
- Kreyszig ODE
- Integrating factor for first order linear equations uniqueness theorem
- Special case of nonlinear first order ordinary differential equation.
- Fourier coefficients in a discrete curve
- Derivation of Solution to nonlinear 2nd Order ODE
- when is a vector field a Lie bracket
- exact differential equations
- Forgotten my maths! Simple 1D ODE, spherical coordinates
- A fundamental solution and its derivatives
- How to solve this second-order nonlinear ordinary differential equation?
- Solving Poissons equation with a delta function in RHS using separation of variables.
- Is this a Bessel function?
- Is this differential system of equations *coupled*?
- FT to solve 2nd order ODE; only one solution
- Use Fourier transform to solve PDE damped wave equation
- Fourier Series question
- Probelm getting started with Fouriertransforms!
- Differential Equations : Integrating factors
- Clairauts equation
- Finding a solution to this equation using Frobenius method
- Sobolev Spaces different definitions
- Verifying solutions with partial derivatives.
- Modelling damped two degree of freedom vibration system
- Need feedback if this is possible (first order removal based model)
- Integration by subsitution (give constant value), why?
- Laplace's Equation,Boundary Conditions Etc.
- Solving u_y + a(x,y) u_x = 0 for function a(x,y) that yields no solution
- 2nd basis function for 2nd order ODE
- How to integrate K/[(y^2 + K)^3/2] dy
- Can someone name this method testing DE's to be homogeneous
- Clarification regarding the proper use of constant C.
- Ode, pde, dde, sde, dae ?
- Solving PDE by means of ODE
- Separating variable DE to solve
- Solving an equation that resembles exact equation
- Homogeneous DE solution?
- Why doesn't this diff eq. have two solutions?
- What are the rules for initial value problems?
- System of ODE
- bessel function
- Damped Harmonic Oscillator Equation: Sum of any 2 solutions equals another solution?
- 1st order PDE, quadratic in derivatives, two variables...analytic solution?
- NonHomogeneous Second Order using Undetermined Coefficients
- Desperate trying to solve a simple Sturm-Liouville equation
- Convolution Integral Properties
- Solving specific PDE
- Good Theory-Intensive Introductory Diff Eq Textbook
- Problem with differential equation
- What do you call a more general boundary condition?
- reduction of order from 2nd to 1st
- Writing PDEs as differential equations on Hilbert space
- about the exponential function of series...
- Numerical Integration of Equation
- Question about independance of functions and wronskian
- Explinations needed, second degree linear equations with a constant
- Optimal Control Problem - LQR
- Y'' + py'+ qy = 0 explain why the value of y''(a) is determined by the values of y(a)
- Runga-Kutta help needed (Matlab)
- About Dirichlet problem of Laplacian equation in 3D sperical coordinates
- Lie brackets of orthonormal vector fields
- Computing the spectrum of operator subject to Neumann BC
- Help with plotting vector fields
- Multiple input output ports in Simulink
- Importance of adding the constant of integration.
- Intuitively d'Alembert's solution to 1D wave equation
- Separable equations
- transport phenomenion problem
- Graph and Differential equations for hyperbolas
- Solving PDE numerically in Mathematica using "upwind" method
- Reviewing for intro PDEs
- Complex no. integration in simulink
- How much math is needed before taking ODE?
- Why df=(∂f/∂x)dx + (∂f/∂y)dy?
- Can you find a family of all the curves having slope=1 at (1,1) on the x-y plane?
- Sturm-Liouville zeros
- Coupled PDE situation
- Two general questions about differential equations.
- General equation for change of variable in a differential equation
- Simple PDE....
- natural log in PDE
- differential equations problem rate in/rate out problem
- derivative convex quadratic
- please help with this ode
- Any help on this first-order differential-difference equation ?
- First order differential equation
- stability criteria for explicit method
- Matrix equation: Ax=b; can A coefficients be negative? Or could this be error?
- Non-homogeneous 2nd degree differentials, simplification issues
- Solving General System of Non-Linear DEs With Many Constant Terms Help (Mathematica)
- Differential- integral factor by inspection
- a second order ODE
- Inverse Laplace transform
- Wronskian
- First order DE initial value
- A two Variable PDE
- Problem with an Undamped Forced Motion
- Solving Uxx - Uy - Ux =0
- second order differential equation with variable coefficients
- need help in this intrgral
- Using Partial Derivatives to check B-S Equation holds and find constants
- Exact solution of a 4th order DE
- numerical integration
- Can't figure out how to solve a diffrential equation
- ODE System with Variable Coefficients
- Solve using Undetermined Coefficients
- Trouble creating differential equation from a flow line
- Differential Equation Challenge
- Integrating Euler's equations for rigid body dynamics with Euler's Method
- Nonlinear nonhomogenous differential equations
- What to use when reverse chain rule doesnt work?
- Bounded Second Order Differential Equations
- A challenging ODE question: find an integrating factor
- looking for fortran subroutine for I Bessel function with negative order
- Help: analytical of 2nd order PDE
- Finding limit
- Coupled differential equations
- Factorial question in a power series solution
- Solving an Stochastic differential equation analytically
- Nonlinear 2nd order DE: test me!
- why is general solution of homogeneous equation linear
- numerical pde books for scientists
- Linear pde of order one
- is this a non linear integral equation ?
- 4th Order Variation of Parameters
- Need help with deriving the eigen-value and eigen-func for a S-L PDE (1dim Heat EQ)
- How many boundary conditions should I have for a 2-D transient pde?
- What kind of differential equation is this
- Undetermined Coefficients - Duplication Question
- Partial Differential Equations
- Logarithmic differential equation
- Can someone explain this to me please?
- 2nd order ODE
- What's the significance of non-uniqueness of solutions to Navier Stokes equations?
- Solving Eulers Method
- variation of parameters
- Convergence/Divergence of an Integral
- Cross product of a dyadic product
- Is there a closed-form solution r(t) regarding universal law of gravitation?
- Steady-State Stability and the Second Derivative
- Solving a Recursive Multivariable Equation
- Second order nonlinear nonhomogeneous differential equation
- help in a tube about a laser ray
- Variation of parameters to obtain PS of 2nd Order non-hom equation
- Unit step response and unit impulse response
- a problem in Lp space
- recommended books for PD's and DE's??
- logistic growth model for cell proliferation with agents
- Laplace transforms on cos^3 t
- Stuck on what appears to be simple ODE
- How to solve this partial differential equation which is a Laplace equation
- Helmholtz wave equation
- Series Solutions of ODE's
- Finite element method versus intergrated finite difference for complex geometries?
- Does my proof make sense?
- Right track
- Is this simple leapfrog method published?
- Nonlinear system of differential equations
- Question on the influence of inconsistent initial values on solving periodic IVP
- Laplace transform
- finite difference approximation for third order partials?
- Classification of PDE
- Solve non-linear differential analytically
- non-linear differential equation
- differential inequalities
- ODE Help!
- Introductary Differential Equations
- Solving inhomogeneous difference equation
- Help solving heat equation with Neumann Boundary Conditions with different domain
- Differentation
- Differential Equation
- integrating factor
- Is there a general way of solving ODE's of the form f(y,y')=0?
- it looks simple but...
- Limit Sets: How to determine
- A problem in differential equation
- ODE example
- Nonuniform mesh with the numerical method of characteristics
- solving DE using laplace
- Inverse Fourier Transform
- Self adjoint differential equation?
- Can someone explain to me how third stage runge kutta and taylor series are related?
- Name of a type of differential equations
- ODE with variable coefficient
- nth Order Differential Equations
- Guessing functions given initial conditions
- A simple ODE I think
- An ODE involving delta function
- Beginers book on Modeling Differential Eqs. for Kinematics
- Using Crank-Nicolson Method to solve Heat Equation
- Finite Element and CFL condition for the heat equation
- Classification of PDE
- Numerical solution to hyperbolic PDE - grid leapfrog - what to do at boundary
- How is green's function a right inverse to the operator L?
- Help with similarity solutions to Heat Equation
- Inverse Laplace Transform - Help Please?
- Euler Lagrange ODE
- Finite Difference Numerical Solution to NL coupled PDEs
- Matlab programming using shooting method, Euler and Runge Ketta methods
- Solving Second Order nonlinear-ODE with mathematica
- Help finding the function
- numerical solution of continuity equation, implicit scheme, staggered grid
- Solving nonlinear Telegrapher's equation (non-constant speed)
- What does an exact solution to a pde mean?
- Period doubling for a damped, driven, harmonic oscillator
- Massless limit of a dynamical system
- Solving a PDE
- Seperation of Variables to find exact solution
- RLC Circuits?
- Bifurcations in a harmonic oscillator equation
- Difference between Central Difference Method and Finite Difference Method
- Navier stokes
- LaPlace transform
- nonlinear systems of differential equations
- differentiate requested plz
- Quantum Harmonic Oscillator Differential Equation help
- Cylindrical Wall Heat Equation
- Limit of zeo mass for a dynamical system
- Van Der Pol system
- Van Der Pol dynamics
- Deriving the Navier-Stokes equation from energy-momentum tensor
- Energy considerations and the inhomogeneous wave equation
- Real hard Diff.-Equation
- Uniqueness theorem for Laplace's equation
- finite element method for shallow water equations
- Solving coupled mode equations using mathematica
- Local operator estimate
- First order PDE with two conditions?
- Analytically solving ODEs with non-constant coefficients for a specific t
- Starting Laplace's equation
- Dynamic Programming
- Good book/references on how to solve DAE in numerically (MATLAB) ?
- Differential equation for motion in mass-spring system with impulse
- Divergence and rotational equal to zero - solutions?
- Existence of Laplace Transform of Piecewise Functions
- Heaviside Functions
- Biharmonic Equation with Coefficients
- Bessel function with e^(x^2)
- Compute the following Convolutions
- HELP!! Step and Ramp Functions!
- Norm equivalence between Sobolev space and L_2
- 2nd order nonlinear ODE help needed
- differential equation
- Laplace Transform help please
- help solving differential equation
- separating variables within square root expressions
- nonlinear PDE finite difference method
- steady state solution in PDE
- Why no constant of integration for the integration factor?
- Hyperbolic Boundary Valued Problem
- A two conducting balls electrostatics problem
- Frechet/functional derivative - misunderstanding
- Is this a legitimate method for solving first order ODEs in fractional form?
- Current DE Research
- Problem applying divergence theorem to wave equation
- Finite-Difference Solutions of Radial Equations: Handling the Origin for D > 1?
- mass conservation
- Lagrangian Mechanics and Differential Equations
- nonlinear 2nd-order diff
- PDE Iteration with cross product
- help with PDE in circular annulus(poisson eq)
- Simple-looking PDE
- A basic ODE where Runge Kutta doesn't work?
- Green function for the annulus
- Solving an ODE
- System of ODE
- Picard method of succesive approximation
- thomas algorithm
- possion equation in circular annulus-II
- Green functions
- Green function as distributions
- Linearize 2nd Order Diff Equations
- Harmonic oscillator with slight non-linearity
- Applying initial conditions to functions that are part of an Eigenfunction Expansion
- a pde question that contains fourier series
- Solution of the good PDE ???
- Non Linear ODE whose solution is can be viewed as a cumulative distribution function
- Transport Equation
- Perturbation theory to solve diff eq?
- can you help me ??
- General solution to differential equations
- superposition on continuty condition
- Help me learn to sketch phase portraits!
- lorenz attractor
- stationary/time dependent/finite elements/differences
- Second Order Linear ODEs
- Causality and the inhomogeneous wave equation with a moving source
- Tough integral equation
- Differentials of Composite Functions
- Commutators of vector operators
- KdV Equation - Modelling Soliton
- chain rule and cylindrical coordinates
- Does anyone know a solution to this ODE?
- Chain rule for implicit differentiation
- Newton Lagrange Method
- How do you solve this PDE?
- help with solving O.D.E
- First order non-separable linear deq's using an integration factor?
- help- heat equation
- Numerical Solutions to Laplace's equation in a wedge
- diffusion equations
- Neighborhood Filters and the NL-means algorithm
- Question on theory/purpose of Sturm-Liouville's theory
- Analytical solution to the diffusion equation with variable diffusivity
- help with two simple equations
- differential equation query
- help maximizing this functional please (it's simple, i think)
- Partial Fractions (Laplace Transform, complex roots)
- Really need help with a simple ODE
- Minimizing function using Calc of Variations and LaGrange Equations
- Plotting ODE's Solutions and Intial Value Problems Using TI-Nspire?
- Second order circuit with 2 capacitors to differential equation
- help solving a PDE system
- How to construct nonlinear ODE systems with given condition?
- Help with nonlinear 1st order ODE
- I want to compute the Jacobian of a function in Matlab
- help with initial value problem
- Differential equation/rational function
- PDE equation in spherical coordinates
- Integration question
- How do you determine if a force field is conservative?
- using an integrating factor properly
- Question on notation
- need help for solving a 2nd order nonlinear differential equation
- Re: Developing a simple program to solve an IBV problem
- Laplacian-like equation
- Quick derivative question
- Numerical evaluation of systems of ODEs
- Questions about harmonic analysis as applied to elasticity
- Modelling the sound of a drum head.
- ODE Approaching the expicit solution
- diffusion through membrane, which boundary condition to implement?
- Can complex analysis be used to solve PDEs other than the Laplacian?
- The chain rule (PDE)
- non-linear ODE
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