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 How Can Numerical Stability Be Achieved in Unsteady Laminar Flow Equations?

  • Aero51
  • · Replies 3 ·
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3

Newton Rhapson Failure Analysis

  • hariharan82
  • · Replies 5 ·
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5

Graduate Wave speed and d'Alembert's formula

  • j5rp
  • · Replies 1 ·
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1

Heather's Mathematical Model Question on Herbicide Absorption

  • MarkFL
  • · Replies 1 ·
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1

Graduate Characteristics - What's Going On?

  • bolbteppa
  • · Replies 2 ·
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2

Graduate Change of variable for 2nd partial differentiation and higher.

  • CuriousCliff
  • · Replies 2 ·
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2

Graduate Solving Differential Equation: {x^2} - 3{y^2}+6xy

  • drawar
  • · Replies 3 ·
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3

Undergrad Where Can I Find Ralston's Fourth Order RK Coefficients?

  • maistral
  • · Replies 3 ·
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3

Undergrad Entering a Differential Equations

  • dpsciarrino
  • · Replies 4 ·
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4
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1

Undergrad What Causes Chaos? Can We Predict Its Patterns?

  • Lasha
  • · Replies 2 ·
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2

Graduate Insanely hard differential equation

  • tade
  • · Replies 12 ·
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12

Saffjdaf's questions at Yahoo Answers regarding difference equations

  • MarkFL
  • · Replies 1 ·
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1

Graduate Ran into this differential equation, got stuck

  • Galorian
  • · Replies 3 ·
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3

Graduate Periodicity of Fourier's heat theory

  • jaredokie
  • · Replies 5 ·
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5

Graduate How to prove asymptotic properties

  • jostpuur
  • · Replies 13 ·
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13

Graduate NH Modified Helmholtz Equation with Robin Boundary Condition

  • Meconium
  • · Replies 9 ·
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9

Graduate Solving a Relativistic Momentum Problem with Differential Equations

  • la6ki
  • · Replies 4 ·
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4

Undergrad Should I Relearn Calculus Before Studying ODEs?

  • kvkenyon
  • · Replies 7 ·
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7

Graduate Trying to generate Turing patterns for Brusselator equations

  • roastedwater
  • · Replies 26 ·
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26

Undergrad How Can One 2nd Order ODE Have Different Solutions?

  • tade
  • · Replies 2 ·
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2

Graduate Differential Equation with Function of Shifted Variable

  • Gackhammer
  • · Replies 5 ·
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5

Graduate System of PDE's dealing with probability density

  • fluidistic
  • · Replies 2 ·
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2

Lauren's question at Yahoo Answers regarding inexact ODE

  • MarkFL
  • · Replies 1 ·
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1

Graduate A Difficult Differential Equation

  • Radek Vavra
  • · Replies 6 ·
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6

Graduate Bessel Functions as Solutions to Scattering Integrals?

  • Tidewater
  • · Replies 7 ·
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7

Graduate Solving autonomous linear systems of differential/difference equations

  • jozko.slaninka
  • · Replies 3 ·
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3

Undergrad Fundamental laws and differential equations

  • dirad
  • · Replies 21 ·
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21

Graduate 3d heat equation with constant point source

  • acme37
  • · Replies 3 ·
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3

Graduate How can I find an outer expansion for f'(r) in this ODE?

  • Chewie666
  • · Replies 1 ·
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1

Graduate Is Schwartz Space a Viable Basis for Understanding PDEs?

  • greentea28a
  • · Replies 7 ·
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7

Solution of Periodic ODE with Floquet Theory

  • Dustinsfl
  • · Replies 13 ·
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13

Graduate Some questions regarding a differential equation

  • nothingisreal
  • · Replies 1 ·
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1

Graduate Non-linear second order from calculus of variation I can't solve

  • jackmell
  • · Replies 5 ·
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5

Graduate Mathematical method in electrical potential ?

  • igraviton
  • · Replies 10 ·
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10

Undergrad How to Solve the Difference Equation yn+1=(n+1)/(n+2) yn?

  • Success
  • · Replies 11 ·
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11

Amylia's question at Yahoo Answers regarding an IVP

  • MarkFL
  • · Replies 4 ·
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4

Graduate Truncation error of the ADI method

  • hermano
  • · Replies 1 ·
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1

General Solution for $(x^2+y^2)x-y$ Differential Equation

  • MarkFL
  • · Replies 2 ·
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2

Graduate PDE Wave equation with phi(x) as initial boundaries

  • Robconway
  • · Replies 1 ·
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1

Undergrad What is the Correct Solution for the Difference Equation yn+1=-0.9yn?

  • Success
  • · Replies 4 ·
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4

Graduate Did I Solve the Difference Equation Correctly?

  • Success
  • · Replies 1 ·
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1

Graduate Is ln(N-K) equal to ln(1-N/K);different approach different result,why?

  • EvanOktavianus
  • · Replies 4 ·
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4

Sammy's question at Yahoo Answers regarding Newton's Law of Cooling

  • MarkFL
  • · Replies 1 ·
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1

Graduate Solving an integration equation with unknown kernel

  • dragon_chen
  • · Replies 1 ·
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1

Graduate Creating intuition about Laplace & Fourier transforms

  • JPaquim
  • · Replies 2 ·
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2

Graduate Double check the derivation integral representation of Bessel Function

  • yungman
  • · Replies 13 ·
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13

Graduate Why Recast Second-Order ODEs as Sturm-Liouville Problems?

  • bolbteppa
  • · Replies 3 ·
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3

Graduate Mathematical tools for analysis of solutions of optim. control problem

  • Yephee
  • · Replies 1 ·
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1

Graduate Solve second order ode with Green function

  • the king
  • · Replies 2 ·
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2

Graduate Orthogonality and orthogonal set.

  • yungman
  • · Replies 5 ·
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5

DE Tutorial Update: Status, Plans, and Opportunities for Involvement

  • Chris L T521
  • · Replies 4 ·
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4
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2
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5

Graduate Need information in deriving first integral of Bessel's function.

  • yungman
  • · Replies 6 ·
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6

Qualitative theory of two-dimensional system

  • Fantini
  • · Replies 10 ·
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10

Solve Diff Eq: Change of Coordinates to Eliminate Squared Terms

  • Fantini
  • · Replies 6 ·
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6

Graduate Bessel's Equation and Rodrique Formula

  • Sudip Pradhan
  • · Replies 1 ·
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1

Undergrad JustCurious' question at Yahoo Answers regarding a mathematical model

  • MarkFL
  • · Replies 1 ·
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1

Undergrad Trouble with first-order exact equation

  • lukka
  • · Replies 3 ·
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3

Graduate Solving DE Using Multiple Methods: Eigenvalues, Eigenvectors, and More

  • encorelui2
  • · Replies 5 ·
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5

?'s question at Yahoo Answers regarding Laplace Transforms

  • Chris L T521
  • · Replies 1 ·
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1

Undergrad Defining functions in terms of differential equations

  • Sigma057
  • · Replies 3 ·
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3

Undergrad Resources for Solving Heat Equation

  • DeeAytch
  • · Replies 1 ·
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1

Undergrad Questions about solving DE with TI calculators

  • MPKU
  • · Replies 1 ·
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1

Undergrad First-order nonlinear ordinary differential equation

  • sam_89
  • · Replies 1 ·
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1

Nano's question at Yahoo Answers regarding Newton's Law of Cooling

  • MarkFL
  • · Replies 1 ·
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1
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3

Graduate How can I solve a coupled PDE and ODE using the method of lines?

  • thereisnospoo
  • · Replies 5 ·
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5

Graduate Solving Sin(theta) = dy/dx | Acoustics Course Prep

  • rexregisanimi
  • · Replies 3 ·
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3

Undergrad Method of Undertermined Coefficients

  • tolove
  • · Replies 9 ·
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9

Graduate How to solve eigenvalue problems with mixed boundary condition?

  • wdlang
  • · Replies 5 ·
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5

Undergrad Silly question about exact equations.

  • Paintjunkie
  • · Replies 2 ·
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2

Undergrad Solving a Differential Equation with a Substitution

  • FeDeX_LaTeX
  • · Replies 4 ·
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4

Graduate Is Morse-Smale Dense and Open in Diff(S1)?

  • arpharazon
  • · Replies 1 ·
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1

Solving an IVP for a system of ODEs

  • krish
  • · Replies 10 ·
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10

Graduate Solve second order ode with Green's functions

  • the king
  • · Replies 2 ·
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2

Undergrad Help needed for solving 2nd order differential equation

  • kemiao
  • · Replies 5 ·
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5

Graduate Role of eigenvalues in phase portraits

  • bhatiaharsh
  • · Replies 2 ·
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2

Differential Equations (particular solutions)

  • Fernando Revilla
  • · Replies 2 ·
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2

Graduate Solution to the scalar wave equation in cylindrical coordinates

  • IridescentRain
  • · Replies 4 ·
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4

Graduate Solving Equations with the Lambert W Function: A* (e^2x - e^x) + b*x = c

  • jya
  • · Replies 2 ·
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2

Graduate Exploring Nonlinear Solutions for PDEs of Functions f:\mathbb{R}^2\to\mathbb{R}

  • jostpuur
  • · Replies 10 ·
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10

Undergrad How Do I Decompose This Fraction in My ODE?

  • smallzilla
  • · Replies 2 ·
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2

What is the name of this equation?

  • Goethe10
  • · Replies 6 ·
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6

Graduate What Type of PDE is This Modified Diffusion Equation?

  • Clouis523
  • · Replies 3 ·
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3

Jimmy Mai's ODEs Questions at Yahoo Answers

  • MarkFL
  • · Replies 2 ·
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2
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1

Raqandre's question at Yahoo Answers regarding a Cauchy-Euler IVP

  • MarkFL
  • · Replies 3 ·
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3

Undergrad Confusion about integration constant

  • malignant
  • · Replies 3 ·
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3

Differential Equation challenge

  • Petrus
  • · Replies 7 ·
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7

Undergrad Factoring a 3rd degree poly to get a start on partial fractions

  • Nikarasu M
  • · Replies 3 ·
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3

Graduate Where to get started with Numerical Solutions to PDEs?

  • lmedin02
  • · Replies 2 ·
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2

Reid's question at Yahoo Answers regarding a first order separable IVP

  • MarkFL
  • · Replies 1 ·
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1

Undergrad Sphere particle dissolution, volume loss vs time

  • hammal
  • · Replies 4 ·
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4

Graduate Midpoint Euler method, second order system

  • pysox
  • · Replies 1 ·
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1

What are the fixed points and stability of a non-linear system of ODEs?

  • ZiniaDuttaGupta
  • · Replies 1 ·
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1

Stability, phase portrait, bifurcations

  • ZiniaDuttaGupta
  • · Replies 1 ·
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1

Solve Linear System of ODEs | x(0)=x0,y(0)=y0,z(0)=z0

  • ZiniaDuttaGupta
  • · Replies 1 ·
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1

Graduate The best method to solve Helmholtz equation for a irregular boundary

  • wdlang
  • · Replies 1 ·
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1