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 do I prove the homogeneity of a function of degree n?

  • Callisto
  • · Replies 6 ·
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6

Graduate Dynamical systems proof - nonwandering set

  • meteorologist1
  • · Replies 5 ·
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5

Graduate Partial Differentiation, complication in variables held constant

  • maple
  • · Replies 3 ·
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3

Undergrad Integrating Population Differential Equation: Need Help!

  • andrewdavid
  • · Replies 2 ·
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2

Undergrad Equation and write the procedure? x+cos(x)=0

  • BC-02
  • · Replies 5 ·
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5

Undergrad Why Does Hooke's Law Favor Cosine Over Exponential Functions?

  • whozum
  • · Replies 5 ·
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5

Graduate Deriving the Exact Solution of the Schlichting ODE for Laminar Jet Flow

  • Clausius2
  • · Replies 3 ·
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3

Graduate Solving Heavy ODE System to Compute Round Jet Near Field

  • Clausius2
  • · Replies 26 ·
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26

Graduate How Can I Solve the Beam Equation using PDEs and the Frequency Domain?

  • athanatos
  • · Replies 11 ·
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11

Undergrad Difference between a differential, dx, and the change in a variable, delta x?

  • erraticimpulse
  • · Replies 2 ·
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2

Graduate Solving the Differential Equation

  • maphysique
  • · Replies 20 ·
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20

Undergrad How Can I Solve Differential Equations Using Provided Web Code?

  • amph1bius
  • · Replies 2 ·
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2

Graduate Why Use Power Series for Schrödinger Equation Solutions?

  • nd
  • · Replies 9 ·
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9

Graduate Can you find a non-recursive formula for y(n) with 4th order coefficients?

  • flying2000
  • · Replies 3 ·
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3

High School What methods can be used for finding a quadratic curve?

  • Bob Smith
  • · Replies 3 ·
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3

Undergrad Constant or variable coefficient?

  • loli12
  • · Replies 4 ·
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4

Graduate Symplectic runge kutta for hamiltonian system

  • Heimdall
  • · Replies 4 ·
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4

Undergrad Differential Equations - Video Lectures

  • sunilkamadolli
  • · Replies 4 ·
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4

Undergrad Forced vibrations w/ damping problem

  • huk
  • · Replies 2 ·
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2

Graduate Existence of solution in Sturm-Liouville DE

  • meteorologist1
  • · Replies 2 ·
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2

Graduate Losing a solution of a 1st order ODE?

  • misogynisticfeminist
  • · Replies 4 ·
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4

Undergrad How do you solve a nonhomogeneous second order ODE with a cosine function?

  • Stu165
  • · Replies 5 ·
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5

Graduate Find Singular Solution to dy/dx=x(1-y^2)^(1/2)

  • andrewdavid
  • · Replies 3 ·
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3

Graduate Are All Eigenvalues of This Fourth-Order Eigenvalue Problem Real?

  • meteorologist1
  • · Replies 17 ·
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17

Graduate Solve Eigenvalue Problem for ODE: Find Eigenvalue & Eigenfunctions

  • sigmund
  • · Replies 14 ·
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14

Graduate What Is the Symbol \nabla^2? Definition & Explanation

  • TheDestroyer
  • · Replies 7 ·
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7

Graduate Inverse Rotation Function Question

  • TheDestroyer
  • · Replies 12 ·
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12

Graduate What is the uniqueness of solutions for linear equations at x=0?

  • wachaif
  • · Replies 2 ·
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2

Undergrad Solving ODE with Paper and Pencil: xy^2 - y = \frac {dy} {dx}

  • Neoma
  • · Replies 3 ·
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3

Graduate Solve Wronskian Problem: Find g(t) from f(t)=t

  • Gale
  • · Replies 6 ·
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6

Graduate Learn Runge-Kutta for Solving Differential Equations

  • saltydog
  • · Replies 4 ·
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4

Graduate Solution for the Differential Equation

  • nados29
  • · Replies 2 ·
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2

Graduate Designing a Damped Pendulum with a Forcing Function for Timekeeping

  • Crosson
  • · Replies 5 ·
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5

Graduate Is My Method of Getting Green's Function Solutions Wrong?

  • StatusX
  • · Replies 2 ·
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2

Undergrad Particle has position vector 2i + j

  • Gughanath
  • · Replies 6 ·
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6

Graduate Solving Integral Equation: \phi(s) from y(s)

  • saltydog
  • · Replies 3 ·
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3

Undergrad What is the Laplace Rule and how does it work in image processing?

  • richnfg
  • · Replies 2 ·
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2

Graduate Can Green Functions Help Solve Differential Equations?

  • eljose
  • · Replies 3 ·
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3

Undergrad Easy way to demonstrate the accuracy of Euler's Method

  • Wingman
  • · Replies 2 ·
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2

Undergrad Problem with Complex Second Order Equations

  • Lyuokdea
  • · Replies 6 ·
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6

Graduate How do I solve complex differential equations involving velocity and time?

  • noble24
  • · Replies 5 ·
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5

Graduate The generalized Lambert W-function

  • saltydog
  • · Replies 6 ·
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6

Undergrad What Distinguishes Exact from Inexact Differentials in Thermodynamics?

  • krusty the clown
  • · Replies 5 ·
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5

Undergrad Best Books for Ordinary Differential Equations

  • Gecko
  • · Replies 10 ·
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10

Graduate Indicial equation to Legendre's equation

  • meteorologist1
  • · Replies 8 ·
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8

Graduate Why Does the Laplacian Operator Differ for Functions of Space and Time?

  • makris
  • · Replies 5 ·
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5

Graduate Another question dealing with Frobenius method

  • meteorologist1
  • · Replies 6 ·
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6

Graduate Symmetry Analysis of Partial Differential Equations

  • bdj03001
  • · Replies 5 ·
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5

Graduate Why does F'(x-ct) equal Dy/Dx in the wave equation for a string?

  • makris
  • · Replies 4 ·
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4

Undergrad Differentiate both sides with respect to x

  • Clari
  • · Replies 2 ·
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2

Undergrad Is There a Theorem Relating Exponential and Trigonometric Functions?

  • daster
  • · Replies 5 ·
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5

Graduate Frobenius method with imaginary powers

  • StatusX
  • · Replies 23 ·
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23

Graduate Understanding differential equations backwards

  • jetset
  • · Replies 15 ·
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15

Graduate Helping out a friendor at least trying to

  • Townsend
  • · Replies 2 ·
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2

Undergrad What is the Outcome of Solving a Partial Differential Equation?

  • Paolo
  • · Replies 7 ·
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7

Undergrad Linear ODE Systems in Numerical Methods.

  • arizonian
  • · Replies 4 ·
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4

Graduate Can this equation be solved analytically?

  • sccv
  • · Replies 7 ·
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7

Undergrad What Should a 16-Year-Old Aspiring Astrophysicist Learn Next?

  • QuantumTheory
  • · Replies 7 ·
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7

Graduate O: How to solve a 4th order non linear ODE using power series?

  • Koubaros
  • · Replies 5 ·
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5

Graduate Understanding Euler's Method & Estimating Area Enclosed

  • Benny
  • · Replies 5 ·
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5

Undergrad Methods that were used to solve the ODE

  • NeutronStar
  • · Replies 4 ·
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4

Graduate Please help with a fluid solver ^_^

  • jojodi
  • · Replies 3 ·
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3

Undergrad Solving a Rocket Sled Problem: Acceleration, Velocity and Time

  • Suicidal
  • · Replies 28 ·
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28

Graduate Solving Numerical System of Equations for $\lambda$ and $\mu$

  • JohanL
  • · Replies 2 ·
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2

Undergrad Differentiation of fractional and negative powers

  • bob4000
  • · Replies 4 ·
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4

Graduate Linear Differential Equations in Kinematics

  • P3X-018
  • · Replies 36 ·
2
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36

Undergrad Falling Bodies with air resitance

  • BigStelly
  • · Replies 24 ·
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24

Undergrad What is the Length Integral Problem at Point (1,1)?

  • ankh
  • · Replies 2 ·
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2

Graduate Need Help - Exact Integrating Factor?

  • NeutronStar
  • · Replies 13 ·
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13

Undergrad Is Separation of Variables a Valid Method for Reducing PDEs to ODEs?

  • Will_C
  • · Replies 3 ·
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3

Undergrad Preparing for Differential Equations: Tips for John in PDX

  • john_in_pdx
  • · Replies 7 ·
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7

Undergrad What Does Differentiating Both Sides as Integrals of the Upper Limits Mean?

  • TonyAlmeidaAtLSE
  • · Replies 2 ·
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2

Undergrad How do I use the Laplace Transform to solve for the integral of sin ax?

  • misogynisticfeminist
  • · Replies 7 ·
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7

Undergrad Find the path traced out by each ant

  • mahesh_2961
  • · Replies 7 ·
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7

Graduate Solving Euler Equation for X^m (m^2 + 1)^2 = 0

  • Beretta
  • · Replies 2 ·
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2

Undergrad Linear ode with variable coefficient

  • leinadrc
  • · Replies 4 ·
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4

Graduate How Does Convolution Theory Apply to Inverse Laplace Transforms?

  • netapparition
  • · Replies 2 ·
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2

Graduate How Do You Apply Boundary Conditions to Solve a Separable PDE in a Strip?

  • MathematicalPhysics
  • · Replies 2 ·
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2

Undergrad Tangent ProblemIts givin me a really really bad headache

  • saltrock
  • · Replies 2 ·
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2

Undergrad Solving PDE: Is There a General Method or Just Guesswork?

  • ksoy
  • · Replies 3 ·
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3

Undergrad Solving Differential Equations to Solving 1/y' = (1/y)+(1/x)

  • drdolittle
  • · Replies 11 ·
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11

Graduate What Is an Attracting Heteroclinic Cycle in a 3D Population Model?

  • Tryingtolearn
  • · Replies 1 ·
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1

Graduate Solving a System of Differential Equations

  • MrBioMedic
  • · Replies 2 ·
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2

Graduate What Methods Can Be Used to Solve Coupled First Order PDEs?

  • MRahmani
  • · Replies 1 ·
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1

Graduate Sturm Liouville and Self Adjoint ODEs

  • Ed Quanta
  • · Replies 2 ·
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2

Undergrad How can I find the equilibrium points for a competing species model?

  • Tryingtolearn
  • · Replies 2 ·
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2

Graduate How Does the Solution of y' = 1/(1+x^2+y^2) Behave as x Approaches Infinity?

  • Zaare
  • · Replies 2 ·
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2

Graduate How Can I Find the Inverse Laplace Transform of These Functions?

  • drdolittle
  • · Replies 3 ·
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3

Graduate Solving Diff Equation: y'' + ln(y) = yx

  • hedlund
  • · Replies 10 ·
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10

Graduate A few problems with the operator method .

  • Claire84
  • · Replies 7 ·
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7

Graduate Prove Uniqueness of DE General Method

  • speeding electron
  • · Replies 5 ·
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5

Undergrad How can I graph an implicit equation on my TI-89/92 calculator?

  • NeutronStar
  • · Replies 5 ·
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5

Undergrad Understanding Heaviside Step Function - Explained with Examples

  • slider527
  • · Replies 3 ·
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3

Graduate Divergence and solenoidal vector fields

  • MathematicalPhysics
  • · Replies 8 ·
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8

Graduate Conserving Quantity in System of Equations: Idea or Miss?

  • mathlete
  • · Replies 5 ·
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5

Graduate Velocity of the solution of a diff. eq.

  • da_willem
  • · Replies 7 ·
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7

Undergrad Solving a Linear Differential Equation

  • misogynisticfeminist
  • · Replies 5 ·
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5

Graduate Solving Ropewalk Equations - Help from Niko

  • niko2000
  • · Replies 2 ·
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2

Undergrad Homework help with mixture problem

  • Deanna
  • · Replies 2 ·
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2

Graduate System of differential equations - a big problem solving it

  • ILens
  • · Replies 7 ·
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7