View Full Version : Differential Equations
- Numerical method to solve high order ODEs.
- Equation of heat conduction, vague text book
- Condition for a 2nd order differential eqn to have bounded solutions?
- 1st order non homogenous DE problem solving
- ODE trouble at integration step
- Equation of Diffusion, trouble simplifying, PDE
- general methods for quasilinear system of ODE's ???
- Where did this term come from? (Fourier)
- Laplace and Poisson Equation in oblate and prolate spheroids
- Frobenius Method
- Heat equation with source and Neumann B.C.
- Differential problem! Confused :S
- Separable Equations
- Diff. eq. for the Einstein metric inside a body
- solve y'y'''=y''
- Need help drawing phase portraits for coupled systems of ODEs
- Fourier trouble in PDE
- Skew Adjoint Frechet derivative?
- Symmetries in DE
- From 2 1st order ODEs to 1 2nd order ODE?
- Help with differential equation
- Nonlinear Differential equation and simplification techniques
- Difference equation
- Many-Body Numeric Integration Algorithm
- Non-linear ODE's
- (ln x)(ln x)
- Integration Factors
- using fourier/laplace transform and green's function
- modeling with diff eq
- change of variables to polar coordinates
- Particularly annoying
- method of characteristics for linear PDE's (variable coefficients)
- partial Multigrid for CFD ?
- Differentiating Products
- solving diff. eq.
- Clairaut's Equation in Optics
- Reduction of Order
- Finding derivatives of vector function for numerical integration
- PDE with functions for coefficients: f_v g_u + f_u g_v = 0
- How would I solve a DiffEq of the form...
- Wave on a string and the chain rule....Argh
- laplace tranform
- Eigenvalues of Laplace-Beltrami operator for oblate spheroid
- draw the trajectory in the x-xdot plane
- DGL 2. Order
- Numerical Integration and Energy Loss
- How can I determine if the equation (2x+3) + (2y-2)y' = 0 is exact or not?
- Finding the Integrating Factor
- First order pde cauchy problem by method of characteristics
- Gradient of multiparticle wavefunction
- Green Function and Boundary Conditions...
- Doubts about change of variable in ODE
- 1st Order Nonlinear equation - Control
- Eigenfunction
- nonlinear first order DE
- solution to the nonlinear 2nd order d.e
- solving forth order nonlinear ode
- simple looking but hard to solve nonlinear PDE
- The ONLY solution of PDE: f_t g_r = f_r g_t ???
- DE of the form y'' + by' = a
- Heat equation...Fourier Series
- 2nd order differential equations with constant coeff. The Particular integrals.
- Legendre's associated function - number of zeros?
- Algorithm for Finite diference
- Green Functions and BC's
- existence and uniqueness
- Laplace transform
- Cant resolve this diferential equation
- Laser Travelling wave rate equations solved numerically
- linearization of nonlinear non homogenous ODE
- Better substitution?
- Linearization and differentials
- Nice Laplace Transform
- Roam DE thread.
- Simple ODE question
- Another ODE, can't separate variables
- ODE question
- how to decide right solution
- illustration about dynamical system
- 2nd order with exponential and constant on right side
- differential equations with singularities
- Laplace Transforms to solve non IVPs?
- How to solve the following equation ?
- Problem with a boundary value problem non linear...
- "Helmholtz equation" Neumann and divergence
- Fourier Coefficients
- simultaneous differential equation
- Need help setting up Logistics equation
- ODE on the plane
- Solution to 1st order nonlinear differential equation
- Three Variable Simultaneous Differential Equation
- diffusion equation with axial symmetry
- Unique soultion of a set of nonlinear differential equations.
- Turn a Solved DE into a Taylor Series...
- solve 4th order trial n error method
- y'=(y+9x)^2, (y+9x=v)
- question
- Von Neumann stability analysis
- Scaling a PDE
- Solution strange, differential equation
- first order nonlinear DE
- Fourier/Laplace transforms
- More derivative fun
- Solving a non-linear non-seperable differential equation
- Multiple Scales and Non-Linear Oscillator.
- Linear PDEs
- i need help in a bonus problem
- How did Euler know this?
- Slope Field
- Integration and taylor expansion
- Energy distribution function
- how to solve this 2nd order nonlinear differential equation
- Double differentials and some curious problems
- A faster way to solve this ODE?
- Axisymmetric Poisson equation
- Bessel Function?
- question on drawing a diff.equation
- (1/2)y'' + y^2 = 1
- where can i find ...
- question in understanding differitial equations..
- first order differential equation help
- please i need help and fast!
- System of first order PDEs
- Solutions to Homogeneous 2nd-order Linear D.E.s
- System of Second Order, Nonhomogeneous Differential Equations
- thermodynamics question
- Need help with D.E to account for air drag of my projectile
- Laplace operational properties
- strange differential equation
- First order ODE problem
- generalizing separation technique
- DE problem: Dog chasing a rabbit
- Help on solving 2nd order linear Partial Differential Equations
- [SOLVED] (Methods)Parameters v Undetermined Coefficients
- Can you help me in this problem?
- Transforming an elliptic PDE into the Laplace equation?
- Nasty Sturm-Liouville Differential Equation/Eigenvalue Problem
- could any one help me
- [SOLVED] Forth Order DiffEq
- Green's function
- Just a question on maximum probability
- Nonhomogeneous ODE with Dirac delta
- 1D Heat diffusion
- 1-d diffusion
- fun eode
- Hamiltonian System with NDSolve
- Analogy to Damped , Driven Oscillator.
- Finding Singular points
- Genral state space model - runge kutte
- integral of first order (first kind) bessel function
- A problem about integral of modified bessel function
- Series solutions near a regular singular point
- ODE change of vars
- Cant find the general solution
- system of DEs with different "denominators"
- Need Laplace transform help
- How can I integrate this ODE numerically?
- comsol pde
- Non-linear ODE.
- Substitution for impulse in recurrence equation
- Conversion of System of Eq's to 2nd Order Diff Eq
- Advanced Numerical Methods for Wave Eqn?
- Trial Solutions of Particular Integrals?
- interesting problem
- Need help solving a Non-Homogenous DE
- Problem solving 2nd order ODE...not for the faint of heart!!
- Olimpiad problem
- Differential equation from general solution
- Implicit
- Can a differential equatio have NO solution ??
- Numerical Solution to 2nd Order Eqn?
- Can this be solved
- partial differential equation help
- Hypothesis for the separation of variables method
- SOS from a chemist
- Drawing phase portraits.
- Runge kutta method for solving PDE
- Why do we get different answers ?
- Can this be solved?
- initial condition leads to periodic solution
- How do i prove this theorem?
- A simple differential equation!
- Solution -> Second Order ODE?
- 2nd-order coupled nonlinear DEs
- Method of characteristics for a 1st order quasi-linear PDE.
- Solution to partial differential equation
- Solution of a simple Differential Equation
- solutions of a first order linear PDE
- Help with Wronskians and matricies?
- [SOLVED] Diff. eqn + erf (error function)
- Limit Problem
- nonhomo with natural log
- Uses of Laguerre Differential Equ.
- Heat equation with Neumann BC
- shallow wave equations
- Hermite Equation use
- y'-y=(1/2)x-1....HARD!
- special riccati equation
- How do you solve this nonlinear first order DE
- Bernoulli equation
- Solution to ODE
- seperation of variables
- Fundamental Matrices in Differential Equations
- Problems about Legendre Polynomials
- Solving non-linear equations simultaneously with DE's using Euler integration
- Laplace Cylindrical Coordinates (Separation of variables)
- Need help integrating
- Biharmonic operator
- Domain of a Differential Equation
- Solving this ODE
- Integration of the function exp(cos(x))
- Serious problem about Differential equation
- Nonseparable Differential Equation
- A very odd partial differential equation.
- System of coupled first order PDE
- Help with a method please?
- (x-a)^2 * (x-b)^2 * y'' = c*y
- Fourier Series question
- i need book
- need help with a diff. eq?
- Build logistic differential equation for given data
- difference in differential and partial differential
- Existence and Uniqueness
- Second order diff.eq. help??
- Help with first order, "Bernoulli" ODE
- Differential Equations - Bifurcations
- Cannot figure out how to solve this differential equation
- phase curves.
- Methods to resolve diff. equ!
- Fourier Series Transform Proof Help
- Differential equation involving money
- Help creating a dif. eq. for a real life model???
- GR equations of motion
- Euler expansion of double exponential?
- Split Step Fourier Method
- Gradient Ascent question
- Real parameters for waves described by nonlinear Schrondinger equation
- Implicit differentiation
- Linearly Independent Solutions
- Please help with a problem I am having
- From 1D to cylindrical co-ordinates in PDEs
- non linear diff. equation example
- Homogeneity Question
- Applied Diff. Eq. Problems
- Fick's second law in cylindrical co-ordinates
- Green function
- Non-homogeneous laplace
- Differential equation reducible to Bessel's Equation
- Instruction needed
- Applied example of Laplace Transform?
- partial differential equation problem
- quasi-linear partial differential equations
- Fourier transformation
- Boundary-value problems (Neumann condition)
- Retarded and lesser Green's function
- a restriction within Variation of Parameters
- Undetermined coefficients vs. Variation of Parameters
- y'' = -y
- Undamped harmonic oscillator
- complex numbers help
- Complex Ginzburg Landau Equation
- Laplace transformation help?
- Numerical methods: Finite difference and spectral methods?
- laplace splitting fraction
- about partial differential equation book
- Fourier-Bessel Series Expansion
- stability? nonlinear mode? soliton?
- Separation of time and space
- Laplace initial value problem.... HELP! PLEASE!
- Proof of the convolution theorem for laplace transform
- Infinitely many integrable/conserved quantities? Soliton?
- system of ODEs
- Coupled Nonlinear Schrodinger Equation
- Solving a first-order nonlinear differential equation.
- Domain, why are they both not defined?
- Product of two integrals....
- Bessel Functions / Eigenvalues / Heat Equation
- solving this 2nd order DE without numerical methods
- Laplace transform....
- Rewriting a matrix equation as a system...quick help needed :).
- Analytical solution of Laplace's equation with horrendous boundary conditions
- Rate of flow - height of water problem
- something i thought of involving hamiltonian systems and gradient systems
- Bessel Equations help
- Help needed to find the flow potential function
- What exactly is a dependent variable?
- Numerical solution to coupled diff. eq.
- good DE book to start
- modeling rotational motion with differential equations
- Question about homogeneous dif. equations
- explicit solution of heat/diffusion equation
- Canonical Transformation of Parabolic PDEs
- Integrals of PDEs (help needed to interpret theorem)
- a chemical engineering example for lagurre equation
- Something about homogenous DE with constant co-efficients:
- The number of BC and IC
- Alternatives to Taylor's book?
- Inverse Laplace Transform Involving a Step (Heaviside) Function
- exponential second member
- Good ODE books
- non homogenous 4th order eq
- I am pissed! And Variation of parameters. who, what, when, where, why?
- [SOLVED] Differential Equation with loans and investments
- Numerically solving NLS equation
- Bacteria growth rate
- Help needed with an elliptic PDE
- Formatting Question
- nonhomogeneous DEs
- differential equations question
- Find W of 2 Solutions to a Differential EQ
- Help understanding homog. eq.
- Bases of solutions
- how to sketch phase planes by hand
- Is this a general from Laplace Transform?
- Books that explain differential equations in terms of complex variable theory?
- A few implicit differentiation problems!
- Vector product - operator's a vector?
- Second Order Linear Diff Eq
- Integrating Factor
- Diff Eq help needed
- I want to learn diff eq
- differential equation
- A DE, maybe easy
- Separable Equations
- Help about the numerical computation on the following equations
- Eikonal equation
- Pre Diff EQ skills?
- How did they find the trial solutions for certain diff.eq'ns?
- How to solve Bessel function
- Initial Value Problems
- Green's fcn for Cylindrical
- legendre's differential equation
- inhomogeneous linear equation--linear solver
- Second Order DE: Nonlinear Homogeneous
- Got a real world problem here ..
- Integration problem
- runge kutta methods
- is this equation linear or nonlinear??
- Help solving a Differential equation
- Differential Equations: Direction Fields
- diffential equations question
- minimum fencing when dividing triangle into 4 parts
- Particular integral question with 2nd order diff eq'ns
- A Hard differential equation!!!!
- Undetermined coefficients to find general solution to system
- spherical harmonic decomposition
- Adaptive runge kutta method
- Coveting ODE to polar coordinates
- Nonhomogeneous Power Series Solution
- Legendre's Equation & Bonnet's Recursion
- Collision of two NLS soliton
- Characteristic method + Jacobian
- Theorem of the uniqueness and existence of a solution of ODE
- Differential equation system, got stuck in a physics problem
- The Legendre Transform for Hamiltonians?
- I have something that doesn't work out for me
- Solution of a differential equation?
- Eigenfunctions of an operator
- A notation question
- Relating two PDEs
- simple help with notation
- Fourier Series confusion
- A boundary value problem "discussion"
- continous spcetrum
- mass term in wave equation
- Limitation of Split-Step Fourier method
- How many solutions?
- question on Lotka-Volterra model and Lanchaster combat model
- How are order and degree defined for this DE? (cos(y'') + xy' = 0)
- Modified Heat Equation
- question about a partial differential equation
- Parallelizing Crank-Nicolson method
- ODE (ar laplace transform)
- Using fourier and laplace transform to solve PDE
- Transformations of KdV equation
- "engine of calculus"
- eigenvalue pde
- Inverse Fourier Transform
- Eigenvectors
- solution to a differential equation required
- Pseudo differential operators
- Nondimensionalization and Scaling
- Dispersion Relation
- Can somebody explain to me this integrodifferential equation?
- Power Series
- FDM on curvilinear coordinates
- problem
- an anti-limit problem
- Can a self adjoint operator have a continous spectrum ??
- Solitary Wave
- coupled ODEs
- Perturbation theory
- Please recommend books on numerical approach to NLS
- Good books for PDE's
- Beginner question
- Solution of First Order DE using Integrating Factors
- where ı can find problems about first order diff. equations
- First Order Equations
- Helmholtz differential equation
- Eigenvalues of second order coupled differential equations
- non linear differential equation
- Characteristic method of solving PDEs
- Analysing parabolic PDEs?
- DE from Theory of Vibrations
- ODE Book
- Difference/Recursive Equations
- Hit a Blank
- Non-linear ODE, "blow-up" phenomenon
- Diff Equation
- Canonical form of PDE
- Technique on solving non-linear ODE
- stuck on this equation,need help
- Bezier Plotting problem
- Nonlinear DE depending on two variables
- Cntinuous functions- Please I need help
- Delay Differential Equations?
- Laplace question
- What are the criteria for solitary wave to exist?
- Please look at these streamlines
- Help whit ill-posedness
- symplectic integrator/hamiltonian
- Find Yp for an especial ODE
- solving D.E using Lapalce
- solving D.E using laplace
- Streamline and free surface profile
- ODE and BVP need help
- diff.eqn. help
- first order diff eq question
- Smooth solution to PDE?
- Duhamel's formula and iterates.
- Solving a partial differential equation (Helmholtz equation)
- Differential of Bezier curve
- Need opinions on my differential equations book
- Shallow water and small amplitude wave?
- Initial conditions for PDE
- Picard's and Peano's Theorem
- D'Alembert's Solution
- Streamline pattern of a solitary wave?
- 4th order equation
- Famly of Curves
- Help Please!!!!
- Velocity and Temp. profiles for stagnation point (m=1)
- What is weakly nonlinearity?
- The region in physical spce where KdV equation is valid
- Solving PDEs?
- Laplas Transform Calculator
- finding the limit and a differential equation
- How do you find isoclines?
- Method of reduction of order
- Perturbation expansion when solving Kdv equation
- Must solitary wave a product of weakly nonlinear and weakly dispersive?
- nonlinearity and dispersion in Kdv equation?
- Fröbenius method
- asymptotic evaluation of Laplace inverse transform
- Definition of markov process with ODE
- air resistance (pebble throwing)
- Intuition for solving PDEs?
- A trick on PDE??
- An example regarding asymptotic expansion
- canonical boundary conditions.
- second order homogenous with variable coeffecients
- non-linear ode
- Not really Laplace's Equation??
- PDE need help.
- automaticly resolve spring equation
- Question about heat conduction equation.
- Some calc 2
- System of Differential Equations
- evolution of pressure in navier stokes
- Convultion with Delta Function
- Differential equations and integal transforms
- differential equation with cross product...
- Solving Universal law of Gravitation as differential equation
- 2nd order differential equation
- expressing one function as linear combination of others
- Help with a PDE system
- Setting up a differential equation
- asymptotic behaviour
- Results same w/ Euler, Improved Euler, & Runge-Kutta
- non-integer order derivative
- PDE kind
- second order equation
- Bernoulli... yay!
- need a solution for the following problem
- hyperbolic equations
- navier-stokes
- Linear equation website?
- Green Function Question
- Dynamical systems:From explicit to implicit equations
- Simple differential equation substitution
- Abel's formula
- Theoretical possibility?
- assumptions of solution form
- Non-hom heat eq. w/ Dirichlet + Neumann BC
- Simple PDE
- Good DE book?
- Where can I find a Site with some good exercises?
- Orders and Degrees
- Stochastic equation
- Existence of solution to Poisson's equation
- numerical methods for solving convection-diffusion PDE
- Runge-Kutta Integration
- The auxiliary equation. Where did it come from?
- Solving this PDE :(
- Exact differential equations
- Horrible (?) system of PDEs
- singular points
- Inverse Fourier Sine Transform
- Elementary Differential Equations
- Airy's Equation
- Require help
- Extremely difficult System of Differentil Equations
- Integration Help
- Recirculation Current in an Inductor
- Help in solving a second-order linear differential equation
- Cramer's Rule
- Second order differential
- singular points in 3-dim space
- Forming DE
- design opt
- Integrating Factors
- a simple differential equation problem.
- Non-Seperable ODE Help
- inverse laplace transform question
- Laplace transform...
- Derivation of Momentum Equation (Eulers Equation)
- Differential equation??
- Partial Differential Equation
- Mass Spring System
- A Laplace Inverse Problem
- O.D.E. for a Building
- Solving PDEs
- Putnam
- a PDE and Linear operator questions.
- Fundamental matrices in inhomogenous problems?
- This problem is hindering my overall work !!!
- 2nd Order De Solution
- wronksian
- Electrodynamic
- A set of nonlinear coupled ODE's
- method of undetermined coefficients
- Guy's, new here can someone help with 2nd order Diff EQ?
- a rather simple DE
- method of characteristics
- solved PDE problems / website?
- Approach to 'double convolution'?
- Analytic solution of this, Advice.
- improper integral
- nonhomogeneous problems
- nonautonomous ode
- finding linearly independent solutions
- Reduction of order
- Meaning of this operator
- differential equation tank problem
- What're the condition for a "green function to exist?
- Real life situation to a sin graph on position by time graph
- Need to find Green Function to solve ODE
- Navier-Stokes cracked?
- Homogeneous Problem
- Arg(z)
- Non-linear boundary problems
- power series problem
- Eigenfunction expansion method in PDE solutions
- Partial differentiation question
- Partial differentiation?
- Existence of a local solution
- Linear operator..
- solutions of the wave equation's little brother
- Numerically solving coupled DEs?
- Substitution Methods and Exact Equations
- problem with EDO and solution y=x^a
- Hankel Transform.
- integrator factor
- drumhead PDE
- limiting population
- How to Solve the Following D.E.?
- higher order General Method problem...
- Linear Partial Differential Equation---Problem in solving??
- HOw to solve this?
- Help on Non-Linear ODE
- 2nd order non homogenous DE
- hermetic matrix
- Is it possible to solve this ODE out?
- Convection described by Lorenz's Equation Bifurcation
- A good review before DE?
- "sum" over Eigenvalues....
- Second order Autonomous Differential Equations
- learning site
- ODE Solution bounds/estimates
- mixing problem involving 3 inlets and 2 outlet pipes
- plsss heLp Me tO sOLve this problem
- Definition of Asymptoticity to a Function
- Asymptotic mathcing for a first order differential equation
- A 2nd Order ODE
- pde and fem simple example
- First order Linear DE
- desperate with this ODE!
- Leibniz notation, need clarification
- Perturbation vs Bifurcation Theory
- Help with this difference equation..
- Unstable fixed point..........help me!!!...U may find interesting!!!
- finite element-rod elements what is the pde
- Solution to ODE
- Analycity of a function
- partial differntials with hypercomplex numbers
- Kinetics Modeling
- characteristic equation
- Solitary wave motive/reason?
- Optimization Two Point BVPs
- The heat kernel
- diffeq review book suggestions?
- DE for Rope
- Can all differential equations be derived from a variational principle?
- Non-homogeneous Poisson solution
- reply required urgently
- Help With Senior Thesis
- First order ode question
- Asymptotic expansions and WKB solution..
- Vibrating Spring Problem
- Analytical solution for coupled ODE's
- Nonlinear ODE Question
- Pseudo arc-length continuation
- Sturn-Liouville theory
- Stone-Weierstrauss
- Nonlinear Equation
- Pde
- Nonlinear Weistrass DE
- Why do I need to use an integrating factor before I translate to polar coordinates?
- dirst order ODE's with x & expontials
- What are the differences between laplace & fourier transform
- help
- is there a better way to do this?
- Partial differential equation problem...
- Fourier/Laplace transform for PDE
- A system of two second order differential equations
- 3rd Order differential eq.
- Diffusion equation and fick law
- Laplace Transofrm using IVP
- Asymptotic solution to a differential equation..
- Solve this equation
- Blasius Equation
- Is this licit or valid?..
- A question about a nonlinear oscillator
- Nonlinear Parabolic BVP: Possible Numerical Methods
- Problem with a Fourier Series
- nonlinear DE fro CM
- Linear Systems equillibrium
- suspended ropes
- Differentiating Bessel Functions
- Diff Eq resources
- What's your favourite type of differential equation...
- Looking for Differential Equation Review
- Euler's Method question.
- Good text for a second course on ODES?
- euler's method for systems
- Stability for quasi-linear ODE
- Frisbee Dog Pursuit Problem
- Differential Equations: I hate them.
- trivial solution method for constant coeff case
- Numerical Solution to ODE System - IVP or BVP?
- Any analytical solutions to this second order nonlinear DE?
- ODE: limit as parameters tend to 0
- Series solution to coupled nonlinear ODEs
- Discriminant of a PDE
- PDE with initial condition
- exact diff equations
- nonlinear first order
- ode and pde-the major difference
- Measure-preserving flow
- 13th International Conference on Neural Information Processing (ICONIP2006)
- Discretization
- Sufficient model, or...?
- limit cycle
- Variable Seperable Solutions in PDEs
- Set of equations
- symplectic algorithm
- Solving a PDE : 2 order in time, 4 order in space, mixed derivatives
- Asymptotic expansion
- Brave ODE
- exact solution for pendulum
- A strange, but very simple, differential equation
- Chocolate with 20% extra
- Characterizing second order ODE
- derivatives of ker and kei
- Inverse Fourier Transform of Bessel Functions
- Fredholm Integral of Second Kind, Eigenvalues
- Showing a diff. eq. has no solutions
- Asymptotic Reference
- linear dependence of bessel equation
- bessel equation
- Why y=e^mx is taken as trial soln ?
- Partial Differential equation problem..
- looking for integrations for dummies
- Differential equation problems
- frobenius method?
- Fractional differential equation..
- Heat Equation
- help-higher order limit cycles
- An interesting IDE
- Integral of Bessel function
- legendre polynomial
- This might sound really stupid... (!)
- Laplace Transform and complex contours
- H value in runge kutta method 2nd order
- Fractional Differential Equations
- Table of differential equations? Online?
- Laplace's Eqn and Cauchy's Integral Formula
- Understanding Einstein's Math
- same roots
- general solution to the euler-cauchy equation
- differential operator
- What is a non-linear...
- a question in coupled differential equation
- Green Functions
- An interesting ODE perhaps?
- bernoulli equation
- PDE: If u is a solution to a certain bound problem, question about laplacian u
- definition
- An interesting PDE perhaps?
- periodicity
- Types of DE
- Cauchy-euler equation...
- Simple Taylor Series?
- A Differential Equation...
- Problem with Nonunique Solutions...
- Differential equation book and topics
- Concavity of an integral function
- semicircle problem
- Hamilton Jacobi equation,...
- Prove the Power Rule
- Pde
- Cfp: Isnn 2006, China
- Lipschitz Continuity and Uniqueness
- integrating factors
- Help Identifying Diagrams?
- Newton's Law of Cooling Problem
- Self-Adjoint Operator Question..
- Modeling problem
- Functional Differential Equation
- Why using series solution
- Riccati Method
- What strategy to use
- I don't understand the case
- how to reduce?
- Ode Again!
- Picard's Iteration
- Ode
- Existence and Uniqueness Theorem
- Please Help me Split this Equation into 2 equations
- Please help me to solve these 2 D.E
- solution of this non-linear equation...
- A*(Uxx+Uyy)-B(x)*Ux=0
- ODE Problem
- another weird O.D.E. ...
- first order coupled differential equations
- is this ODE separable?
- Runge Kutta Method
- Initial Value Problem question
- Differential equation question
- PDE's: examples I can do, real equations... No.
- Stochastic differential equacions
- Is there a reason
- How do you graph this?
- Linear independent or dependent
- Exact Eq.
- Another change of variable problem..
- change of variable dif equation problem
- f(x)=sin x, centered at x=pi/2 Question
- a question about Differential operator
- Green similar problem...
- Solution to general elliptic equation
- Nonnlinear Differential Equation problem
- Is differentiel equation needed ?
- Help with ODE
- Laplace equation
- Coupled first order differential equations
- Coupled first order differential equations
- ln|0|=kx+c?
- DE Problem
- [SOLVED] picard iteration
- Auxiliary Equation with Imaginary Roots
- How do we find Integrating factor for a General Diff equation
- Homework
- A new perspective for an ODE
- reduction order does not reduce
- second order DE
- I know the answer but I don't know why!
- A necessary condition for uniqueness
- application of partial derivatives
- Differential Equations...Help!
- conceptual understanding
- Non-Homogeneous Heat Equation Problem
- Derivatives of Exponentials
- Chemical Reactions
- ordinary differential equation
- Mixing problems
- i'm not seeing it
- dim of a pde
- reconstructing my notes
- Laplace Transform
- Resonance pde wave equation u(\phi,t) involving lagrange polynomials
- Q: pde heat eqn u(x,t) history effect \int^t_0 d^2u/dx^2
- derivative question (Help Please)
- Bifurcation Diagram, quick help please
- Finite Difference Methods
- Systems of second order ODE's
- Piecewise
- 1D Diffusion Equations (Numerical Computing) [kind of long]
- Laplace Initial Value Problem
- homogeneous and particular solution
- simple but i cant get it? Log derivative
- Lorenz Equations
- Geodesic equation
- Functional solution
- Desperate
- difficult for me>>
- Need help with Impulse function and unit step function at singularity
- Difference equation help.
- What should be the particular solution?
- question
- Simple ODE, but how to approach?
- complex exponential (properties)
- Linear First Order D.E
- Tricky Looking!
- Bacteria Growth Problem.
- Complete Set
- a pendulum system and ODEs
- help with non linear problem
- numerical DE: Theta method
- help with frobenius
- Fourier Series Question
- Some help need please
- HELP please.
- Laplace transform
- Differential Equations
- Nonhomogeneous: Undetermined coefficients
- practical application of partial,simple differential equation
- integral equation
- Solution of Initial Value Problems, Laplace Transform
- Liapunov functions
- laplace2
- laplace1
- Dirac Delta Function
- Hermitian Operator
- system of diff equations
- A pendulum revisited
- second order ODE (numerical)
- ODE, step change, Heat transfer
- How do I use RungeKutta 4/shooting method for this problem?
- Total derivative -> partial derivative
- partial differential equation
- Poplation Problem
- substitution methods
- Bessel's Equation Solution Proof
- Need help finding solutions to Diff eq
- Differential equation
- Finding a homogeneous solution
- intergrate power of sin
- How to get a particular solution.
- First attempt at Diff Eq
- Mixed derivative in DE
- Problem in newtonian gravity- 2nd order, integration problems
- Probably a really easy problem...
- Integrating factor strategy
- Variation of Parameters
- How prove the maximum of 2 functions
- Help With PDE
- Waves Equation
- How to solve these Differential Equations?
- Which method to use?
- Dfq, Prove
- Dfq Prob, using Logisitc Equation
- Second-Order Homogeneous Linear Equation
- Radio active decay
- Integrating this...
- Hooke's Law
- homogeneous of degree n
- Variational Symmetries. . .
- Schlichting exact solution
- Please HELP!! Differential Equations
- beam pde
- Power Series Solution (SE)?
- Parabolic PDE in curved space
- Homogeneous Differential Equations
- Please help me!
- Finding quadratic curves
- Simple Question
- video lecture
- constant or variable coefficient?
- Differential Equations - Video Lectures
- forced vibrations w/ damping problem
- Heavy ODE System
- Losing a solution of a 1st order ODE?
- Soln to 2nd ODE nonhomgeneous
- Singular Solution
- Fourth-order eigenvalue problem
- Existence of solution in Sturm-Liouville DE
- Parabolic problems
- Wronskian problem
- Eigenvalue problem
- Solution for the Differential Equation
- Can someone help me?
- Inverse Rotation Function Question...
- Hadamard regularization in BIE
- An open ended ODE problem
- Help me with Linear equation pls ~
- greens function
- Dynamical systems proof - nonwandering set
- The Abel equation
- Problem with an ODE
- An integral equation
- Green,s inverse problem...
- Easy way to demonstrate the accuracy of Euler's Method
- Problem with Complex Second Order Equations
- Having the Hardest Time
- What's the difference between initial conditions and boundary conditions?
- inexact/exact differentials
- Action of Laplacian Operator
- Another question dealing with Frobenius method
- Indicial equation to Legendre's equation
- wave equation for a string
- symplectic runge kutta for hamiltonian system
- Symmetry Analysis of Partial Differential Equations
- Helping out a friend..or at least trying to
- Frobenius method with imaginary powers
- differentiation
- Quick question
- ODE trouble
- Question on integration
- differentiation of fractional and negative powers
- Lineary DE in Kinematics
- understanding differential equations "backwards"
- Separation of Variables
- Falling Bodies with air resitance
- Length Integral Problem
- PDE in H^-1
- Diff-Eq Prep
- Anyone can answer my question, please help
- Laplace Transform Help
- ::sigh:: What now?
- Need Help - Exact Integrating Factor?
- Best Books for Ordinary Differential Equations
- Euler's method
- Non Linear 4th order ODE
- linear ode with variable coefficient
- System Help
- Linear ODE Systems in Numerical Methods.
- What is a differential equation and what use do they have?
- Applying Initial Conditions
- Convolution Laplace Transform
- Tangent Problem..Its givin me a really really bad headache
- differential equation
- Euler Equation please help
- A differential equation
- Limes for an unknown solution
- Attracting Heteroclinic Cycles.
- Unique solutions
- Heaviside????? HELP
- A few problems with the operator method.....
- Coupled First order PDEs
- A Competing Species Model
- Sturm Liouville and Self Adjoint ODEs
- Linear DE help.
- velocity of the solution of a diff. eq.
- System of differential equations - a big problem solving it
- An Exact Equation
- Meshfree & EFG methods
- Need some help with nonlinear integration
- ropewalk equations
- Homework help with mixture problem
- Lost on eigenvalues
- Solving by seperation of variables.
- Meaning of the Differential
- Solutions of D.E - Bessel Function
- Torricelli's theorem
- A Tricky Problem
- integration problem
- nonlinear coupled differential equation
- need help with nonlinear 2nd order DE
- Second Order ODE
- Quick Harmonic Motion problem (got most of it solved)
- Ok, need a little help in a couple of areas (2nd order w/forcing terms)
- Help with Initial Value Problems
- crazy optimization/Lagrange questino
- Messed up my TI-89 somehow, don't want to reset, any suggests for {}??
- How do you find the general solution of differential equations?
- Hard diff-eq
- Runge Kutta 4: problems in application in computer simulation
- Theory of ODE
- Textbooks
- Numerical resolution of 2nd order non-linear differential equation
- Puzzling paradox
- Related Rates
- Differential Homework Questions
- Heat Propagation
- Multiphysics PDE solvers with solution dependent domains
- Homework question
- Logistics
- Can anyone see what's wrong with my solution..
- General Solutions of 2nd Order Linear Homogeneous Ordinary D.E.s
- Boundary Value Problem
- Integration
- Reducing 2nd order to 1st order type question
- solving differential equation with laplace transform
- Applications Of differential Equations In Physics
- Predator vs. prey -- trouble
- Laplace Transform
- Areas and distances
- PDEs and shock waves
- classify this diff eq
- This should be a simple problem to solve but im just not getting it...
- solve Uxx-3Uxt-4Utt=0 (hyperbolic)
- Could use a little advice here, with a 2nd order ODE
- wave eqn with initial functions odd
- Can you solve this equation?
- Ploting zero order Bessel function..
- Apparently this 2nd-order ODE has 3 solutions??
- Material Differential-Equation
- is this theorem true?
- Problem with an IVP
- How to use matrices to solve systems of ODEs?
- DE Identifying/Solving Homo/Bernoullis/Exact/etc
- heat equation
- Finite Element Method?
- solution to the exact differential equation
- Green's function expansion in a set of eigenfunction
- coffee and milk :) (cooling/heating problem)
- Need Equation/graphing help
- Problem on Inverse Laplace with Unit Step
- Homogeneous equation
- Is there an easy trick to this (getting into form)
- Does Homogeneous = Separable?
- Reducing to First-Order Equation
- [MUST READ] This forum is not for homework questions.
- Having a hard time with 2 implicit equations
- exact de’s
- Developing equation for specific wave
- u-du or parts
- Rotor
- integration by parts
- How to solve this 2nd differential eq?
- How does differential equation work?
- integration by parts
- A challenge Question on Inverse Laplace...
- Working on Constructing Equations
- Green's functions solution to Poisson's eqn (or something similar)
- Having trouble with Laplace Transform for DiffEQ
- Fourier coefficient
- phase spaces
- Navier-Stokes
- laplace limits
- 3rd order non-linear differential eqn
- solution to 2nd O.D.E. using power seris
- An Adequate Proof?
- Green inverse problem in Differential equation...
- Partial Differential Equation
- the wave equation
- Help for Schrodinger's Equation
- Heat equation in a sphere surface
- 2nd order coupled non-linear DE's
- SHM Calculus Twister
- Good book on PDE
- Do you know?
- Deceptively Difficult Physics Integration Problem (Restorative Forces)?
- Continuity equation question
- 2nd Order DE - Power series
- System of Differential equations with a singular coefficient matrix, help?
- Am looking for minimum...
- partial diff eq
- Convolution Method
- Nullclines
- 2nd order DE, is there a way to solve this without series?
- More power series: 2nd-order ODE
- Power series solution for 1st-order ODE
- Fourier Sine Transform
- Helmholtz Equation in a Square
- Only a Mathematician Can Solve This Equation
- Slope fields
- solving a partial DE
- Please Help i am stumped
- Finding if a solution exists
- Quick implicit diff. question
- Help me please!!!!!!!
- Euler method
- 2^x derivitive
- confusing
- im stuck
- laplace
- Proof need helps
- Which method for this DE?
- Troublesome Equation
- What is the solution of this? 2nd part
- Inverse Laplace Transform
- 1D wave equation with gravity
- Laplacian in Spherical Shell
- need this DE paper
- DE: x*(2x-y)*y'=y^2+(x-6)*y+9x
- Laplace Transformation help~
- plz help me this Inverse Laplace Transformation question
- Need Serious Help
- Help needed!
- laplace last one please check
- Question Regarding Initial Conditions.
- ? - infinitely differentiable solutions to initial value problems
- Enquiry
- Fourier Series of sin (pi*t)
- Two ODE proofs
- Laplace little differet one
- Laplace
- I need help asap
- Shooting method
- 3rd order nonlinear ODE
- spring problem stuck
- word problem
- Show that reaction-diffusion PDE is linear
- Inverse Laplace Transformation Problem
- How do you solve this differential equation?
- Blasius numerical solution?
- Linear transformations?
- Taylor series prob
- Laplace transform: where am I messing up?
- solving a 2nd order DE
- All separable equations are exact?
- Planck's law of radiation??
- Taylor Series
- challenging integrals and derivatives to try
- Numerical solutions to differential equations
- help with problem
- Bit hazy on reduction of order
- How do I determine the interval of existance of a DE?
- Why is there no symbol for partial integration?
- What is the solution of this?
- Percetange of lefties in mathematics?
- Inhomogeneous Initial, Boundary Value Theorem Proof
- help with reduction method.
- Differential Equations book
- help
- Radio Filter Problem
- A tricky differential equation
- Solving the Wave Eqt Using Fourier Series- please help!
- A variational problem...
- Nonlinear system of differential equations
- About Feynman-Kac equivalence between PDE and SDE
- Please help!
- how do i differentiate this?
- "outer" differentiation ?
- Differentiate y=x sinx cosx
- Lagrangian method for equation of motion
- Stochastic Partial Differential Equation Averaging.
- Finding solutions to equations of motion
- Functional Differential Eqn.
- Diff eq
- Numerical RK4 integrator help
- Deriving the heat equation
- Non-Linear ODE’s
- Can Anybody Solve This Equation ??
- Solve this ODE
- sytem of diff eq
- System of PDEs...
- second differential equations
- Vector Differential Equation
- True application of Diff Eq
- differentiating mult-variable equation
- I can't do these diff. eqns.
- Laplace Transforms
- Use of curl of gradient of scalar
- Spring Damping
- partial differentials
- help with power series solution
- differential equations
- Intro. to Differential Equations
- 2nd order differential equation
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