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

High School What Do ODE, PDE, DDE, SDE, and DAE Stand For?

  • Elwin.Martin
  • · Replies 3 ·
Replies
3

RF's question at Yahoo Answers (linear independence, Wronskian).

  • Fernando Revilla
  • · Replies 1 ·
Replies
1

How to Integrate a Function to Solve Air Resistance Equations?

  • Us477
  • · Replies 7 ·
Replies
7

How Does Angular Velocity Affect Crane Boom Dynamics?

  • Dustinsfl
  • · Replies 3 ·
Replies
3

Kavina's question at Yahoo Answers regarding an initial value problem

  • MarkFL
  • · Replies 1 ·
Replies
1

How to Sketch and Interpret Streamlines in a Streamfunction?

  • Tranquillity
  • · Replies 4 ·
Replies
4

Graduate How do i evaluate the convergence

  • supercali
  • · Replies 2 ·
Replies
2

Graduate Non linear ODE: y'' = a y + b y^3

  • galuoises
  • · Replies 7 ·
Replies
7

Graduate How Do You Derive Coefficients for Expanding f(x) Using Sine Waves?

  • ChaseRLewis
  • · Replies 1 ·
Replies
1

Graduate A specific method of characteristics problem

  • ericm1234
  • · Replies 10 ·
Replies
10

Undergrad Inverse Laplace of 1s: Formula-Based Solution

  • indianaronald
  • · Replies 4 ·
Replies
4

Graduate DG method for nonlinear elliptic PDE

  • hkcool
  • · Replies 1 ·
Replies
1

Graduate Exploring Non-Separable Solutions for the Time-Dependent Schrödinger Equation

  • ShayanJ
  • · Replies 2 ·
Replies
2

Graduate Global solution to inhomogeneous Bernoulli ODE

  • doobly
  • · Replies 1 ·
Replies
1

Graduate Chaos theory vs catastrophe theory

  • marellasunny
  • · Replies 8 ·
Replies
8

Graduate Simple equations in Dirac Delta function terms

  • James MC
  • · Replies 4 ·
Replies
4

Converting Second Order to First Order: A Systematic Approach

  • Dustinsfl
  • · Replies 6 ·
Replies
6

Holmes' question at Yahoo Answers regarding a Cauchy-Euler equation

  • MarkFL
  • · Replies 2 ·
Replies
2

Graduate Integral involving product of derivatives of Legendre polynomials

  • hanson
  • · Replies 2 ·
Replies
2

Graduate D^2T/dx^2 + d^2T/dy^2 + d^2T/dz^2 = C

  • timsea81
  • · Replies 2 ·
Replies
2

Graduate Solving an integral equation by iteration

  • mode1111
  • · Replies 4 ·
Replies
4
Replies
2

Randy's question at Yahoo Answers (linear differential quation)

  • Fernando Revilla
  • · Replies 1 ·
Replies
1

Graduate Solving Differential - Equation of Motion

  • aerowenn
  • · Replies 3 ·
Replies
3

Norwin Dole's question at Yahoo Answers about a differential equation

  • Fernando Revilla
  • · Replies 1 ·
Replies
1

Graduate Solving time dependent differential equation and plotting

  • pleasehelpmeno
  • · Replies 4 ·
Replies
4

Graduate Question about parabolic cylinder functions

  • PRB147
  • · Replies 2 ·
Replies
2

Graduate Solving Du/dt=A*d^2u/dx^2 w/ Boundary Conditions

  • timsea81
  • · Replies 2 ·
Replies
2

Non homogeneous linear differential equation

  • Fernando Revilla
  • · Replies 2 ·
Replies
2

Undergrad How do you indicate transient terms when y just equals 1 ?

  • Jeff12341234
  • · Replies 2 ·
Replies
2

Graduate Is the Black-Scholes equation a differential equation?

  • TheGhostInside
  • · Replies 1 ·
Replies
1

Undergrad Is This Differential Equation Separable?

  • Jeff12341234
  • · Replies 2 ·
Replies
2

Undergrad Difference between particular integral and particular solution?

  • shivaniits
  • · Replies 1 ·
Replies
1

Graduate Stuck on one of the substitution method steps

  • Jeff12341234
  • · Replies 6 ·
Replies
6

Undergrad How do you check your answer in a diff. eq. problem when you can't solve for Y?

  • Jeff12341234
  • · Replies 9 ·
Replies
9

Undergrad When y= a constant, how do you find the interval of definition?

  • Jeff12341234
  • · Replies 5 ·
Replies
5

Finding Orbit Type with Energy Equation

  • Dustinsfl
  • · Replies 4 ·
Replies
4

Graduate How to Solve a Non-Exact Differential Equation with an Integrating Factor?

  • Ptopenny
  • · Replies 2 ·
Replies
2

Calculating Elliptical Orbit Points & Flight Path Angle

  • Dustinsfl
  • · Replies 3 ·
Replies
3

Graduate Second order pde - on invariant?

  • sigh1342
  • · Replies 1 ·
Replies
1

Undergrad Disagreement with my teacher about linear DE's

  • 1MileCrash
  • · Replies 6 ·
Replies
6

Graduate Numerical Methods for PDEs, basic algorithm?

  • maistral
  • · Replies 2 ·
Replies
2

Abby's question at Yahoo Answers involving exponential decay

  • MarkFL
  • · Replies 1 ·
Replies
1

Graduate Differential expression: Does it make sense?

  • rollingstein
  • · Replies 2 ·
Replies
2

Graduate Find an Autonomous ODE with Specified Properties

  • williamrand1
  • · Replies 7 ·
Replies
7

Graduate Understanding the Heat Equation and its Practical Applications

  • member 428835
  • · Replies 7 ·
Replies
7
Replies
1
Replies
2
Replies
1

Undergrad Help with this separable differential equation

  • dmayers94
  • · Replies 1 ·
Replies
1

Undergrad Solving 2nd Order Linear DE with Constant Coefficients

  • Apteronotus
  • · Replies 1 ·
Replies
1

Graduate Matrix differential equation for rectangular matrix

  • weetabixharry
  • · Replies 3 ·
Replies
3

Undergrad Which Books Discuss Nonlinear Differential Equations?

  • Ask4material
  • · Replies 2 ·
Replies
2

Undergrad First order differential equation question

  • idks16
  • · Replies 1 ·
Replies
1

Undergrad Criteria for Solving this equation

  • smooney
  • · Replies 2 ·
Replies
2

Graduate ODE solution method and external packages

  • Ronankeating
  • · Replies 5 ·
Replies
5

Graduate Number of parameters for a nonlinear differential equation

  • marellasunny
  • · Replies 1 ·
Replies
1

Graduate System of non-linear partial differential eqs from electrostatics

  • Madoro
  • · Replies 8 ·
Replies
8

Undergrad Physical Applications of the Bernoulli Diff Eq

  • grep6
  • · Replies 2 ·
Replies
2

Graduate Understanding Dirac Delta Function: Time Derivative & Hankel Transformation

  • femiadeyemi
  • · Replies 5 ·
Replies
5

Graduate Solving a 2 d.o.f. spring-mass-damper system

  • Mark_1042
  • · Replies 1 ·
Replies
1

Undergrad Can you explain the theory behind separable differential equations?

  • samwinnick
  • · Replies 3 ·
Replies
3

Four Non-Linear Simultaneous Equations

  • Wilmer
  • · Replies 4 ·
Replies
4

Graduate Can dy/dx=x^2+Y^2 be solved analytically?

  • joqhey
  • · Replies 14 ·
Replies
14

Graduate Mathematical model of continuous and batch (discrete) system combined

  • Warren Holden
  • · Replies 6 ·
Replies
6

Undergrad Convolution theorem and laplace transforms

  • indianaronald
  • · Replies 1 ·
Replies
1

Graduate Linearization of Second Order Differential Equations

  • Ruby Tyra
  • · Replies 2 ·
Replies
2

Graduate Colliding Particles in Granular Material Flows

  • GGBCN
  • · Replies 3 ·
Replies
3

Heat and Temperature Equations-Separation of variables

  • ra_forever8
  • · Replies 4 ·
Replies
4

Graduate Can This Differential Equation Be Simplified or Solved Numerically?

  • JulieK
  • · Replies 14 ·
Replies
14

Undergrad Rayleigh's differential equation

  • atrus_ovis
  • · Replies 4 ·
Replies
4

Graduate Is This Differential Equation Non-Exact in Non-Simply Connected Regions?

  • Settembrini
  • · Replies 5 ·
Replies
5

Graduate How are partial differential equations used to model physical systems?

  • hazzzon
  • · Replies 3 ·
Replies
3

Graduate How to integrate this partial differential equation

  • JulieK
  • · Replies 2 ·
Replies
2

Undergrad Power series when to use Frobenius method

  • John777
  • · Replies 5 ·
Replies
5

Undergrad What is the Uniqueness Theorem and its Application in Physics?

  • JaredPM
  • · Replies 1 ·
Replies
1

Graduate How to Model Droplet Vaporization Using Coupled Non-linear Equations?

  • Dilman
  • · Replies 14 ·
Replies
14

High School What is the difference between a differential equation and a derivative?

  • Alshia
  • · Replies 5 ·
Replies
5

How can nonlinear ODEs be solved effectively?

  • hatguy
  • · Replies 3 ·
Replies
3
Replies
4

Undergrad Uniqueness Theorem: Qualitative Example of 1st Order Linear DE

  • JaredPM
  • · Replies 1 ·
Replies
1

Graduate How to solve general engineering equation (Duhammel Integral)

  • Ronankeating
  • · Replies 7 ·
Replies
7

Graduate Nonlinear second order differential equation

  • JulieK
  • · Replies 2 ·
Replies
2

Undergrad Why Equate Differential Equations to Zero?

  • JaredPM
  • · Replies 2 ·
Replies
2

Graduate What is the form of the following recursion relation?

  • bjnartowt
  • · Replies 2 ·
Replies
2

Undergrad Why Don't We Write the Coefficient m(x) in Differential Equations?

  • matematikuvol
  • · Replies 4 ·
Replies
4

Graduate Why do we use different methods for finding power series solutions?

  • matematikuvol
  • · Replies 3 ·
Replies
3

Graduate Differential equation selection and linear transformations

  • JaredPM
  • · Replies 1 ·
Replies
1

Solving the 1D Heat Equation with Separations of Variables

  • superbread88
  • · Replies 4 ·
Replies
4

Graduate How Can I Solve This Non-Linear PDE in 2D?

  • L0r3n20
  • · Replies 1 ·
Replies
1

Graduate Laplace equation in a square with mixed boundary conditions

  • samuelandjw
  • · Replies 13 ·
Replies
13

Graduate Crude Fourier Series approximation for PDEs.

  • maistral
  • · Replies 1 ·
Replies
1

Graduate Change ODE system to Polar to apply Poincare-Bendixson

  • wrolsr
  • · Replies 1 ·
Replies
1

Graduate How to solve the following integral-differential equations?

  • jamesbom100
  • · Replies 3 ·
Replies
3

Can this perturbation problem be solved using a multi-scale approach?

  • Dustinsfl
  • · Replies 6 ·
Replies
6

Graduate On Bessel function's orthogonality

  • samuelandjw
  • · Replies 4 ·
Replies
4

Undergrad Why Is the Constant of Integration Zero in This Differential Equation Example?

  • Bipolarity
  • · Replies 4 ·
Replies
4

Graduate Substitution to turn a non-linear least squares problem into a linear one

  • bers
  • · Replies 6 ·
Replies
6

Van der Pol Equation: Solving w/ Perturbation Methods

  • Dustinsfl
  • · Replies 2 ·
Replies
2

Graduate Does this differential equation have a closed form?

  • euroazn
  • · Replies 3 ·
Replies
3