Differential Equations Forum

Join in expert discussion on differential equation topics like ODE and PDE. Differential equations are an equation involving derivatives of a function or functions.

Threads

Graduate Second order differential equation.(Damped oscillation)

  • mr pizzle
  • · Replies 3 ·
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3

Graduate Numerical Approximation of a 4D System of ODE's

  • TylerH
  • · Replies 3 ·
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3

Graduate How Do You Solve This Complex Partial Differential Equation?

  • femiadeyemi
  • · Replies 6 ·
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6

Graduate Using sifting property to prove other properties

  • Bipolarity
  • · Replies 2 ·
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2
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6

First order linear differential Equation

  • Petrus
  • · Replies 4 ·
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4

Graduate Newtons Cooling problem/ possible error in book.

  • randombill
  • · Replies 4 ·
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4

Undergrad Differential Eq. Last Step Solution Separating Variables

  • knowLittle
  • · Replies 6 ·
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6

Solving 16•4^{-x}=4^x-6 Equation

  • Petrus
  • · Replies 3 ·
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3

Graduate Solving PDEs using Fouries Series ?

  • Makveger
  • · Replies 12 ·
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12

Undergrad Matrix Inversion for Variation of Parameters

  • gkirkland
  • · Replies 5 ·
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5

Discovering the Inverse Fourier Transform

  • Prove It
  • · Replies 1 ·
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1

Backward Euler Method for 2x2 systems

  • mathmari
  • · Replies 17 ·
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17

Dynamical System (timtam's question at Yahoo Answers)

  • Fernando Revilla
  • · Replies 1 ·
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1

Solve Unit Step Function Algebraically - Help Needed

  • paulmdrdo1
  • · Replies 18 ·
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18

Graduate How to Integrate Bessel Functions Over z?

  • besselevil
  • · Replies 5 ·
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5

Help rearranging a linear first order differential equation

  • Kris1
  • · Replies 3 ·
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3

Undergrad How to Solve State Homogeneous Differential Equations Using MATLAB?

  • archanas4743
  • · Replies 4 ·
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4

Undergrad Connection between numerical integration and solving ODE numerically.

  • riemann86
  • · Replies 3 ·
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3

Graduate Laplace's equation in two dimensions.

  • physwizard
  • · Replies 8 ·
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8

Graduate I know nothing about diff. equations, is this one solvable?

  • tamtam402
  • · Replies 4 ·
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4

Graduate What is the General Solution to the Differential Equation?

  • llorgos
  • · Replies 5 ·
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5
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1

Tab'z's questions at Yahoo Answers regarding a linear first order IVP

  • MarkFL
  • · Replies 1 ·
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1

Tonnie's question at Yahoo Answers regarding a Bernoulli equation

  • MarkFL
  • · Replies 1 ·
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1

Graduate Solving the Constant PDE ∂u/∂x=∂u/∂y

  • AlonsoMcLaren
  • · Replies 2 ·
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2

Undergrad My engineering faculty is having us rote-memorize Laplace transforms

  • tamtam402
  • · Replies 1 ·
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1

Undergrad Understanding Implicit Solutions: Solving a Basic Problem with x*sin(y) = cos(y)

  • logan3
  • · Replies 2 ·
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2

Solving Separable Equations: Tips and Tricks

  • Kris1
  • · Replies 9 ·
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9
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1

Liapunov function (扁頭科學's question at Yahoo Answers)

  • Fernando Revilla
  • · Replies 1 ·
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1

Graduate Numerical method to use on a system of second order nonlinear ODE's

  • MonkOfPhysics
  • · Replies 1 ·
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1

Graduate Poisson's Eq. with separable variables?

  • badkitty
  • · Replies 2 ·
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2

Graduate Can I Solve This Complicated Equation with a Dirac Delta Function?

  • Goddar
  • · Replies 4 ·
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4

Graduate Help with solving system of DE's

  • gkirkland
  • · Replies 1 ·
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1

Undergrad Convergence Test (Comparison) Questions

  • omer10000
  • · Replies 6 ·
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6

Graduate !Understanding Partial Derivatives of Coordinate Transformation

  • onchoa
  • · Replies 2 ·
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2

How Can I Use Mellin and Hankel Transforms to Solve Problems?

  • Jerome1
  • · Replies 2 ·
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2

Integrating factor (Madmen's question at Yahoo Answers)

  • Fernando Revilla
  • · Replies 2 ·
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2

Undergrad Modeling Population Growth [dP/dt = k P - A P2 - h]

  • NZBRU
  • · Replies 3 ·
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3

Graduate Question on deriving Bessel's equation

  • yungman
  • · Replies 2 ·
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2

Graduate Notes on symmetries of the KdV equation

  • MarkovMarakov
  • · Replies 3 ·
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3

Undergrad 2nd order nonhomogeneos differential equations with initial conditions

  • pedro123
  • · Replies 3 ·
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3

Undergrad Find a linear homogeneous equation with given general solution

  • pedro123
  • · Replies 11 ·
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11
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3

Graduate Eigenvalue problem with operators as matrix elements

  • wil3
  • · Replies 2 ·
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2

Undergrad Differential Equations behavior for large t?

  • Gridvvk
  • · Replies 4 ·
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4

Graduate Linear system of equations for a differential equation

  • Abyssnight
  • · Replies 1 ·
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1

Graduate Method of characteristics and shock waves

  • Leb
  • · Replies 46 ·
2
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46

Undergrad Practical Examples of RK4 Method for Second Order Differential Equations

  • Akshay_Anti
  • · Replies 1 ·
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1

Graduate Nonlinear second order differential equation

  • Ioria
  • · Replies 1 ·
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1

Graduate Predicting the form of solution of PDE

  • gikiian
  • · Replies 7 ·
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7

Graduate How Do You Solve the 1D Heat Equation with Trigonometric Initial Conditions?

  • prolix
  • · Replies 1 ·
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1

Graduate Can the Dirac Delta Impulse be eliminated in this differential equation?

  • Not_a_Sheldon
  • · Replies 5 ·
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5

Graduate Where Does This Equation Originate?

  • pattisahusiwa
  • · Replies 3 ·
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3

Undergrad Method of Undetermined Coefficients for Higher Order Linear Equations

  • craighenn
  • · Replies 1 ·
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1

Graduate Solving a system of ODEs using Runge-Kutta

  • P_Sampras
  • · Replies 1 ·
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1

Graduate On solving PDE using separating the variable.

  • A Dhingra
  • · Replies 2 ·
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2

Graduate Understanding Sturm-Liouville Problems: Implications and Solutions

  • thelema418
  • · Replies 1 ·
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1

Graduate Complex exponetial form of Fourier series

  • Bipolarity
  • · Replies 1 ·
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1

Solving a linear first order differential equation

  • Logan Land
  • · Replies 9 ·
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9

Undergrad Slope fields:Can y converge on two roots?

  • craighenn
  • · Replies 1 ·
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1

Graduate Coupled 2nd Order DE: Convert to system of 1st Order

  • jstluise
  • · Replies 4 ·
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4

Graduate Numerical Integration over 3D mesh

  • thepopasmurf
  • · Replies 17 ·
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17

Graduate Divergence in polar; not asking for derivation

  • ericm1234
  • · Replies 1 ·
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1

Graduate Heat Equation with cylindrical rod

  • baseball07
  • · Replies 4 ·
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4

Method of Reduction of Order and Variation of Parameters

  • Sudharaka
  • · Replies 2 ·
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2

Solving a Riccati Differential Equation

  • Sudharaka
  • · Replies 1 ·
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1

Solving for Central Force in $r = c\theta^2$ Orbit

  • Carla1985
  • · Replies 5 ·
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5

Graduate Inverse kinematics: Defining a Jacobian of rotation

  • aubrey.r.jones
  • · Replies 1 ·
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1

Graduate Solving a pair of nonlinear coupled DEs

  • zeroseven
  • · Replies 8 ·
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8

Undergrad How to set up an equation for a real system?

  • amorale
  • · Replies 1 ·
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1

Undergrad Solving a Bernoulli differential equation

  • Boxiom
  • · Replies 3 ·
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3

Undergrad Convolution Integral and Differential Equation

  • Colts
  • · Replies 5 ·
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5

Graduate Is there a function that equals its Laplace transform?

  • Bipolarity
  • · Replies 3 ·
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3

Graduate Runge-Kutta method for ut = f(x,y)?

  • gofightwin
  • · Replies 6 ·
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6

Graduate Simple-looking 1st order DE, solution anyone?

  • Irid
  • · Replies 9 ·
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9

Fluid Dynamics in Action: (Mechanics)

  • ra_forever8
  • · Replies 1 ·
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1

Graduate Need Help with Heterogeneous Differential Equation

  • Kvad
  • · Replies 10 ·
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10

Graduate How can boundary conditions be written for a DEQ with Dirac delta?

  • rynlee
  • · Replies 6 ·
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6

Graduate How can I solve a first-order non-linear ODE?

  • *FaerieLight*
  • · Replies 3 ·
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3

Nikachu's question at Yahoo Answers regarding orthogonal trajectories

  • MarkFL
  • · Replies 1 ·
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1

Undergrad Find the particular solution to Dy/Dx = 3x^2 + 1

  • Creaturemagic
  • · Replies 1 ·
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1

Graduate Solving DE- which approach and more importantly - why

  • CJDW
  • · Replies 4 ·
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4

Graduate Question concerning the extended kalman filter

  • Anonymous123
  • · Replies 1 ·
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1

Graduate Method of Characteristics for Hyperbolic PDE

  • Graham Power
  • · Replies 1 ·
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1

Graduate Closed form expression of the roots of Laguerre polynomials

  • kd6ac
  • · Replies 1 ·
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1

Graduate Convolution integral and fourier transform in linear response theory

  • kgz
  • · Replies 3 ·
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3

Graduate Solve "DE Problems Help" for Astronaut Balloon Speed & Trypsin Formation

  • uknowwho
  • · Replies 1 ·
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1

Simple pendulum with air resistance

  • Carla1985
  • · Replies 4 ·
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4

Graduate Why Are Laplace Transforms Challenging in Differential Equations?

  • cmmcnamara
  • · Replies 1 ·
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1

Graduate Is the inverse of the Laplace transform unique?

  • Bipolarity
  • · Replies 1 ·
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1

Undergrad Trajectories of a linear system first order diff. equations

  • Nikitin
  • · Replies 1 ·
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1

Graduate Problem with solution of a PDE, Neumann functions

  • nearlynothing
  • · Replies 1 ·
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1

Find Extension of Springs: $\vec{r}$, $T$, and $x_E$

  • Carla1985
  • · Replies 4 ·
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4

Undergrad Seperable Differential equation

  • nick.martinez
  • · Replies 2 ·
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2

Graduate Nth order linear whose auxiliary has repeated roots

  • Bipolarity
  • · Replies 4 ·
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4

Graduate Limiting Value of P as t Approaches Infinity

  • nick.martinez
  • · Replies 1 ·
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1

Graduate Is there a general method for solving Fredholm integral equations?

  • LeonhardEuler
  • · Replies 5 ·
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5
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4