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

Undergrad Solving First-Order Linear Equation with Reversed Roles

  • awelex
  • · Replies 11 ·
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11

Undergrad How to integrate K/[(y^2 + K)^3/2] dy

  • animboy
  • · Replies 2 ·
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2

Graduate 2nd basis function for 2nd order ODE

  • X89codered89X
  • · Replies 2 ·
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2

Graduate Derivation of Solution to nonlinear 2nd Order ODE

  • X89codered89X
  • · Replies 5 ·
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5

Undergrad Integration by subsitution (give constant value), why?

  • invictor
  • · Replies 5 ·
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5

Graduate Multidimensional Fourier transform oddity

  • muppet
  • · Replies 2 ·
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2

Graduate Sobolev Spaces different definitions

  • agahlawa
  • · Replies 1 ·
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1

Graduate Differential Equations : Integrating factors

  • pooja mehta
  • · Replies 7 ·
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7

Graduate Finding a solution to this equation using Frobenius method

  • climbon
  • · Replies 1 ·
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1

Graduate Probelm getting started with Fouriertransforms

  • toofle
  • · Replies 4 ·
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4

Graduate Bessel Functions and Shifted Integral Limits: How Are They Related?

  • dfrenette
  • · Replies 6 ·
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6

Graduate FT to solve 2nd order ODE; only one solution

  • bdforbes
  • · Replies 1 ·
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1

High School How is this simplification possible?

  • mthoma10
  • · Replies 4 ·
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4

Graduate A fundamental solution and its derivatives

  • hanson
  • · Replies 7 ·
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7

Graduate How to solve this second-order nonlinear ordinary differential equation?

  • dimension10
  • · Replies 4 ·
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4

Graduate Inverse Laplace Transform Equation

  • sugaku
  • · Replies 8 ·
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8

Graduate Solving Equation: ln(y)(x^4 - y^4) + ln(x)(y^4 - x^4) + (y^2 - x^2)^2 = 0

  • CIMP
  • · Replies 13 ·
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13

Undergrad How to Solve Exact Differential Equations with Discontinuous Functions?

  • mehtamonica
  • · Replies 2 ·
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2

Undergrad Solving For t in A Sin(Bt) - Ct + D = 0

  • KLoux
  • · Replies 1 ·
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1

Graduate Forgotten my maths Simple 1D ODE, spherical coordinates

  • JHZR2
  • · Replies 1 ·
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1

Graduate Principle of superposition for a particular case of liner differential equation.

  • arroy_0205
  • · Replies 1 ·
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1

Graduate Numerical method on heat diffusion problem

  • loukoumas
  • · Replies 1 ·
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1

Undergrad Fourier coefficients in a discrete curve

  • suido
  • · Replies 1 ·
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1

Graduate Special case of nonlinear first order ordinary differential equation.

  • sola maths
  • · Replies 7 ·
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7

Graduate Why Can't These Equations Be Solved Analytically?

  • superg33k
  • · Replies 2 ·
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2

Graduate Integrating factor for first order linear equations uniqueness theorem

  • gsingh2011
  • · Replies 3 ·
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3

Graduate Relationship between two solutions

  • Milligram
  • · Replies 2 ·
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2

Graduate Verifying Differential Equations Solutions: ODEs on Intervals

  • mathnerd15
  • · Replies 3 ·
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3

Graduate How Can I Bridge the Gap Between Undergraduate and Graduate Level PDEs?

  • Gwely Mernans
  • · Replies 1 ·
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1

Graduate Solving the Schrodinger Eq: Time Dependency & System Dynamics

  • saravanan13
  • · Replies 1 ·
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1

Graduate Proof that Bessel functions tend to zero when x approaches infinity

  • Monsterman222
  • · Replies 3 ·
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3

Graduate Taylor series and the forward finite difference method

  • roldy
  • · Replies 2 ·
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2

Graduate Existence and uniqueness of PDEs

  • daniel_8775
  • · Replies 1 ·
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1

Graduate First order nonlinear differential equation Help needed.

  • plushval
  • · Replies 6 ·
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6

Graduate Solving a nonlinear system with parameters

  • KevinL
  • · Replies 1 ·
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1

Graduate How do I Find the Dispersion Relation for a PDE?

  • autobot.d
  • · Replies 5 ·
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5

Graduate Second order, nonlinear differential equation help

  • cpyles1
  • · Replies 1 ·
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1

Graduate Trouble solving a differential equation

  • rmas
  • · Replies 5 ·
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5

Graduate Cauchy problem, method of characteristics

  • math2011
  • · Replies 4 ·
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4

Graduate Model involving SOD of two variables

  • lol_nl
  • · Replies 4 ·
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4

Graduate Differential Equations : Solution Curves

  • mehtamonica
  • · Replies 2 ·
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2

Graduate Change of Variables: Transform DeltaT/DeltaT with Chain Rule

  • Candy309
  • · Replies 10 ·
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10

Graduate Homotopy Analysis Method (or Homotopy Perturbation Method)?

  • crackjack
  • · Replies 3 ·
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3

Graduate Partial differential equations , rearranging and spotting

  • mohsin031211
  • · Replies 6 ·
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6

Graduate Ordinary points, regular singular points and irregular singular points

  • JamesGoh
  • · Replies 3 ·
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3

Graduate Second derivative - wolfram giving one answer, professor giving another

  • boredat20
  • · Replies 3 ·
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3

Graduate Partial derivatives and transformations of variables: A step-by-step guide.

  • Lawrencel2
  • · Replies 1 ·
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1

Graduate Function composition in finite differences

  • fmilano
  • · Replies 1 ·
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1

Undergrad Separable equation constant generality.

  • shayaan_musta
  • · Replies 4 ·
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4

Undergrad Struggling with This Differential Equation?

  • marcoaaguiar
  • · Replies 4 ·
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4

Graduate Differential equations: y’= sin(cx) sin(yx), y(0)=1

  • Faema
  • · Replies 3 ·
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3

Graduate How can you derive the regularization of a product with a delta function?

  • atrahasis
  • · Replies 1 ·
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1

Graduate Assumed solution for the Laplace EQUATION?

  • johnpjust
  • · Replies 4 ·
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4

Undergrad Equilibrium solutions in mathematical modelling

  • klinklindeman
  • · Replies 1 ·
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1

Graduate Understanding Analytic Functions and Convergence

  • JamesGoh
  • · Replies 1 ·
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1

Undergrad Understanding Logarithmic Identities in Differential Equations

  • HeLiXe
  • · Replies 9 ·
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9

Graduate How to Prove a Verification Theorem for an Optimal Control Problem?

  • psalgado
  • · Replies 1 ·
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1

Graduate What is the significance of the constant k in the brachistochrone problem?

  • diffrac
  • · Replies 4 ·
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4

Undergrad Question about laplace transform limits

  • quietrain
  • · Replies 2 ·
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2

Graduate Physical significance of dot and cross products in electrodynamics

  • nouveau_riche
  • · Replies 6 ·
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6

Undergrad Solving d/dx from dy/dx in Maths

  • htdIO
  • · Replies 7 ·
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7

Graduate Differential eq with square root numerical

  • xapiens
  • · Replies 8 ·
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8

Graduate Need help for Ito Isometry proof

  • Sa7oru
  • · Replies 2 ·
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2

Graduate Solve Cauchy Problem for PDE: exp(-x)dz/dx+{y^2}dz/dy=exp(x)yz

  • finmaths123
  • · Replies 6 ·
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6

Undergrad How to calculate elliptic integrals in MATHCAD?

  • sgsawant
  • · Replies 2 ·
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2

Undergrad What is needed from calc III for PDEs?

  • anonymity
  • · Replies 4 ·
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4

Graduate Non-linear Schrodinger Equation (Differential Equation)

  • syedmohsin
  • · Replies 10 ·
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10

Graduate Why Does This IVP Have a Unique Solution?

  • TheAntithesis
  • · Replies 1 ·
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1

Graduate Initial Condition Problems with Heat Equation in Mathematica

  • mhmounty
  • · Replies 4 ·
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4

Graduate How to solve ODE for independent function

  • kaushel
  • · Replies 2 ·
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2

Graduate How many B.C. are necessary for first order PDE set?

  • dragonmount
  • · Replies 2 ·
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2

Graduate Periodic functions (or similar)

  • zetafunction
  • · Replies 1 ·
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1

Graduate Solving a PDE using multiple transforms

  • hunt_mat
  • · Replies 8 ·
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8

Undergrad Understanding the Chain Rule Proof: Explained with Examples

  • Дьявол
  • · Replies 11 ·
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11

Graduate Consider the second-order linear homogeneous of differential equation.

  • CAMO
  • · Replies 1 ·
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1

Undergrad Second-order non-homogeneous linear differential equation

  • properman
  • · Replies 3 ·
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3

Graduate Is there more than one Crank-Nicolson scheme?

  • gjfelix2001
  • · Replies 1 ·
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1

Graduate Fourth order Runge–Kutta in C# - two differential equations

  • Itosu
  • · Replies 38 ·
2
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38

Undergrad Matching orientations of 2-d arrays of values - using fft?

  • n00bot
  • · Replies 2 ·
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2

Undergrad Quick question about Differential Equations.

  • ozone
  • · Replies 4 ·
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4

Graduate Solving this type of recurrence equation

  • samuelandjw
  • · Replies 4 ·
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4

Graduate Finding Similarity Solutions for Boundary Value Problems

  • math2011
  • · Replies 1 ·
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1

Graduate Using BVP4C for overdetermined system

  • ktsharp
  • · Replies 1 ·
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1

Undergrad Creating a RL/RC/RLC Circuit model

  • BeefBowl
  • · Replies 3 ·
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3

Graduate Lane-Emden Equation for non conventional EoS.

  • rsouza01
  • · Replies 1 ·
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1

Graduate Help with initial value problem(IVP)

  • shayaan_musta
  • · Replies 2 ·
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2

Graduate Normal derivative of Green's function on a disk.

  • yungman
  • · Replies 8 ·
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8

Undergrad Calculating the gradient of a surface

  • kakarot1905
  • · Replies 4 ·
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4

Graduate Where Does Homoclinic Bifurcation Occur in a 2-D Nonlinear Dynamics System?

  • phyalan
  • · Replies 5 ·
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5

Undergrad Limit properties laplace transform

  • vrc
  • · Replies 7 ·
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7

Graduate Question about orthogonal functions

  • Char. Limit
  • · Replies 4 ·
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4

Graduate Effect of Gravity on Wave Propagation

  • adnan jahan
  • · Replies 1 ·
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1

Graduate Second Solution to Bessel's Function of order zero

  • cybla
  • · Replies 1 ·
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1

Graduate Example of stochastic differential equations

  • hkour
  • · Replies 2 ·
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2

Graduate Simple Sturm-Liouville system resembling Associated-Legendre equation?

  • omyojj
  • · Replies 5 ·
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5

Graduate Characterisitics of a Parabolic PDE

  • Tohiko
  • · Replies 11 ·
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11

Undergrad Laplace Transforms: Solving exp(-as)*(1/s+5) w/ S-Shifting

  • Raybert
  • · Replies 1 ·
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1

Undergrad It might simple to you, but i'm stuck.

  • lpheng
  • · Replies 3 ·
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3

Undergrad Power series method and various techniques

  • Jen_Jer_888
  • · Replies 2 ·
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2

Graduate Dear Fellows If I am on wrong part of forum then sory for that

  • adnan jahan
  • · Replies 3 ·
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3