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 Finite element method for shallow water equations

  • alvesker
  • · Replies 1 ·
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1

Graduate Solving Mass Conservation with Characteristic System

  • stanley.st
  • · Replies 2 ·
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2

Graduate How to Evaluate Integrals Involving Bessel Functions and Exponential Terms?

  • ibw
  • · Replies 1 ·
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1

Graduate Finite-Difference Solutions of Radial Equations: Handling the Origin for D > 1?

  • lpetrich
  • · Replies 3 ·
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3

Graduate Current DE Research: Math Physics & Unsolved Areas

  • Parmenides
  • · Replies 3 ·
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3

Graduate Hyperbolic Boundary Valued Problem

  • robby991
  • · Replies 2 ·
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2

Graduate Is this a legitimate method for solving first order ODEs in fractional form?

  • tjackson3
  • · Replies 7 ·
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7

Graduate Does this PDE admit steady state solutions?

  • mbp
  • · Replies 1 ·
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1

Graduate A two conducting balls electrostatics problem

  • uniteast
  • · Replies 1 ·
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1

Graduate Nonlinear PDE finite difference method

  • Hassen
  • · Replies 5 ·
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5

Undergrad Why no constant of integration for the integration factor?

  • nomadreid
  • · Replies 2 ·
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2

Graduate Norm equivalence between Sobolev space and L_2

  • kisengue
  • · Replies 1 ·
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1

Graduate Laplace Transform: Solving for f(x) and Finding Area Under a Curve

  • acer400
  • · Replies 7 ·
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7

Undergrad Separating variables within square root expressions

  • timsea81
  • · Replies 3 ·
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3

Undergrad Help solving differential equation

  • timsea81
  • · Replies 3 ·
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3

Graduate Solve for s: Differential Equation with Initial Condition s(0)=20,000

  • georg gill
  • · Replies 1 ·
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1

Undergrad How do I write the equation for a ramp function?

  • jayhawks
  • · Replies 1 ·
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1

Graduate If so, you can differentiate it with respect to Vd to prove Rd=\frac{Vt}{Id}.

  • zaheerrafahi
  • · Replies 2 ·
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2

Graduate Differential equation for motion in mass-spring system with impulse

  • zpeters1
  • · Replies 2 ·
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2

Undergrad Divergence and rotational equal to zero - solutions?

  • Tosh5457
  • · Replies 3 ·
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3

Graduate How Do You Solve a Second Order Nonlinear Autonomous ODE?

  • MHD93
  • · Replies 1 ·
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1

Undergrad Understand Heaviside Functions & Laplace Transforms

  • DmytriE
  • · Replies 1 ·
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1

Graduate Understanding the Fourier Series for Solving Laplace's Equation on a Plate

  • zheng89120
  • · Replies 1 ·
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1

Graduate Uniqueness theorem for Laplace's equation

  • asmani
  • · Replies 6 ·
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6

Graduate Analytically solving ODEs with non-constant coefficients for a specific t

  • thesteve
  • · Replies 1 ·
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1

Graduate First order PDE with two conditions?

  • stanley.st
  • · Replies 1 ·
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1

Graduate How Does Blasius Equation Apply to Jet Exhaust Simulations?

  • Clausius2
  • · Replies 3 ·
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3

Graduate Deriving the Navier-Stokes equation from energy-momentum tensor

  • PhyPsy
  • · Replies 4 ·
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4

Graduate Solving a differential equation with Bessel functions and tan/sec terms

  • w00dy85
  • · Replies 2 ·
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2

Graduate Numerical solution of continuity equation, implicit scheme, staggered grid

  • trelek2
  • · Replies 1 ·
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1

Undergrad What does an exact solution to a pde mean?

  • myshadow
  • · Replies 2 ·
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2

Undergrad Seperation of Variables to find exact solution

  • robcru1
  • · Replies 9 ·
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9

Graduate Laplace Transform: Explaining Theory & Solving ODE

  • marioooo
  • · Replies 1 ·
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1

Graduate Finite Difference Numerical Solution to NL coupled PDEs

  • cjvolz
  • · Replies 3 ·
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3

Undergrad Why Does the Cylindrical Wall Heat Equation Solution Include Logarithms?

  • clava345
  • · Replies 2 ·
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2

Graduate Difference between Central Difference Method and Finite Difference Method

  • iqjump123
  • · Replies 3 ·
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3

Graduate Quantum Harmonic Oscillator Differential Equation help

  • cybla
  • · Replies 3 ·
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3

Undergrad Understanding RLC Circuits: Calculating Current in a Series Circuit

  • kings13
  • · Replies 1 ·
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1

Graduate Bifurcations in a harmonic oscillator equation

  • smithnya
  • · Replies 2 ·
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2

Graduate Solving a PDE: Deriving a Solution for (y^2)u'' + 2yu' - 2u = 0

  • PythagoreLove
  • · Replies 6 ·
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6

Graduate Hankel Functions: Exploring Real & Imaginary Arguments

  • rj_brown
  • · Replies 1 ·
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1

Graduate Period doubling for a damped, driven, harmonic oscillator

  • speed racer 5
  • · Replies 3 ·
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3

Graduate Understanding PDE Classification: Parabolic Equations and Quadratic Forms

  • S. Moger
  • · Replies 3 ·
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3

Undergrad How Can I Solve the Differential Equation for Y in This Formula?

  • yamdizzle
  • · Replies 6 ·
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6

Graduate Solving Second Order nonlinear-ODE with mathematica

  • minik
  • · Replies 2 ·
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2

Graduate Finding Functional for Euler Lagrange ODE

  • muzialis
  • · Replies 5 ·
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5

Graduate Help with similarity solutions to Heat Equation

  • jamesufland
  • · Replies 2 ·
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2

Graduate How Do You Apply Shifting in Inverse Laplace Transforms?

  • Khamul
  • · Replies 3 ·
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3

Graduate Numerical solution to hyperbolic PDE - grid leapfrog - what to do at boundary

  • trelek2
  • · Replies 5 ·
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5

Graduate Help with population of various isotopes in decay chains (Bateman equations)

  • alby
  • · Replies 4 ·
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4

Graduate How is green's function a right inverse to the operator L?

  • ENgez
  • · Replies 5 ·
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5

Graduate Why Not Use Laplace Transforms for This ODE?

  • AlonsoMcLaren
  • · Replies 5 ·
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5

Graduate Name of a type of differential equations

  • kevchang
  • · Replies 1 ·
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1

Graduate Self adjoint differential equation?

  • vivek.iitd
  • · Replies 1 ·
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1

Graduate Finding the Inverse Fourier Transform for a Complex Function

  • mdb
  • · Replies 1 ·
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1

Graduate Using Crank-Nicolson Method to solve Heat Equation

  • robot1000
  • · Replies 1 ·
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1

Graduate Solving Heat Equation w/ Neumann BCs Different Domain

  • maxtor101
  • · Replies 3 ·
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3

Graduate Solving the D'Alembert-Claureaut Equation for a Unit Speed Geodesic in the Plane

  • lavinia
  • · Replies 4 ·
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4

Graduate Can Variable Coefficients in an ODE Be Simplified for Easier Solution?

  • iwasthere
  • · Replies 3 ·
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3

Graduate Nth Order Differential Equations

  • ahaanomegas
  • · Replies 2 ·
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2

Undergrad Guessing functions given initial conditions

  • x3ro
  • · Replies 1 ·
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1

Graduate Nonlinear system of differential equations

  • sith
  • · Replies 4 ·
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4

Graduate How to take the Laplace transform of a function involving the step function?

  • abrandt
  • · Replies 1 ·
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1

Graduate Nonuniform mesh with the numerical method of characteristics

  • kobjob
  • · Replies 3 ·
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3

Graduate Solving an Equation with Sin -1 and Sin: Confusion and Help Needed

  • DGriffiths
  • · Replies 3 ·
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3

Undergrad Help in a tube about a laser ray

  • hagopbul
  • · Replies 9 ·
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9

Graduate Solving a PDE: Can Someone Help?

  • kaniello
  • · Replies 7 ·
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7

Graduate A problem in differential equation

  • AlonsoMcLaren
  • · Replies 3 ·
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3

Graduate Is there a general way of solving ODE's of the form f(y,y')=0?

  • AdrianZ
  • · Replies 1 ·
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1

Undergrad How to Differentiate z with Respect to ∅?

  • hatchelhoff
  • · Replies 2 ·
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2

Undergrad IVP Solving with Integrating Factor: Finding a Solution

  • cycling4life
  • · Replies 1 ·
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1

Undergrad Introductary Differential Equations

  • gordonj005
  • · Replies 4 ·
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4

Graduate Compute the solution of y"' - xy' = 0

  • bballing1210
  • · Replies 3 ·
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3

Graduate Cant solve heat equation on semi infiniate solid

  • kieranzas
  • · Replies 2 ·
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2

Graduate Solvability v.s. the existance of a solution for nonlinear ODE's

  • pergradus
  • · Replies 1 ·
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1

Graduate Is there a closed-form solution r(t) regarding universal law of gravitation?

  • JDoolin
  • · Replies 11 ·
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11

Graduate Solving a Recursive Multivariable Equation

  • BobbyOcean
  • · Replies 2 ·
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2

Graduate Is there a method for solving ODEs with functions H(x,y) and G(x,y)?

  • flyingpig
  • · Replies 4 ·
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4

Graduate Is this simple leapfrog method published?

  • eztum
  • · Replies 4 ·
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4

Graduate Finite difference approximation for third order partials?

  • swuster
  • · Replies 4 ·
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4

Graduate Solving V'' - kV^(-1/2) = 0 to prove k proportional to V^(3/2)

  • pd1zz13
  • · Replies 1 ·
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1

Graduate Solve non-linear differential analytically

  • pd1zz13
  • · Replies 2 ·
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2

Graduate How Do We Classify Higher-Order PDEs with Multiple Independent Variables?

  • SpaceWalrus
  • · Replies 5 ·
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5

Graduate Laplace Transform: Solving 2D Wave Equation Now

  • compxci
  • · Replies 1 ·
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1

Undergrad Stuck on what appears to be simple ODE

  • Airsteve0
  • · Replies 5 ·
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5

Graduate Two Variable PDE in Open Domain Plane

  • lavinia
  • · Replies 8 ·
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8

Graduate Is This Proof for Finding a Third Independent Solution to a 3rd Order ODE Valid?

  • AdrianZ
  • · Replies 9 ·
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9

Undergrad Help Understanding Integral with Partial Fractions

  • Airsteve0
  • · Replies 5 ·
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5

Graduate Solve Forced Oscillation using Differential Equation Method

  • angelwentheng
  • · Replies 20 ·
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20

Graduate How to solve this partial differential equation which is a Laplace equation

  • dimension10
  • · Replies 3 ·
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3

Graduate Finite Element Method vs. Integrated Finite Difference for Complex Geometries

  • bzz77
  • · Replies 6 ·
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6

Graduate Mastering Series Solutions of ODE's

  • Angry Citizen
  • · Replies 4 ·
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4

Graduate Logistic growth model for cell proliferation with agents

  • Risclab
  • · Replies 1 ·
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1

Undergrad How can I use Laplace transforms to solve for cos^3 t?

  • wown
  • · Replies 2 ·
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2

Undergrad Recommended books for PD's and DE's?

  • yaya10
  • · Replies 1 ·
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1

Graduate Variation of parameters to obtain PS of 2nd Order non-hom equation

  • robot1000
  • · Replies 2 ·
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2

Graduate Unit step response and unit impulse response

  • AlonsoMcLaren
  • · Replies 1 ·
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1

Undergrad Convergence/Divergence of an Integral

  • VitaX
  • · Replies 6 ·
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6

Graduate What are the Boundary Conditions for Solving Uxx - Uy - Ux =0?

  • bewertow
  • · Replies 2 ·
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2

Graduate Solving Eigenvalue & Eigenfunction of 1D Heat Equation

  • Powertravel
  • · Replies 1 ·
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1