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 Analytical solution of the Euler equations in 1D?

  • Morridini
  • · Replies 4 ·
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4

Graduate When does a Lipschitz condition fail for a DE?

  • marellasunny
  • · Replies 2 ·
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2
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1

Undergrad Understanding the Relationship Between Dripping Rate and Water Clock Design

  • That Neuron
  • · Replies 2 ·
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2

Undergrad Solution of this differential equation

  • ecpietscheck
  • · Replies 3 ·
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3

Graduate Solving the Ode Emden-Fowler Equation: A Scientist's Perspective

  • kamke
  • · Replies 2 ·
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2

Undergrad Stuck on Laplace Transform of Odd Trig Function

  • Underhill
  • · Replies 3 ·
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3

Undergrad Why Does Sigma(s) Cause Complex Roots in My Equation?

  • dscot
  • · Replies 3 ·
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3

Graduate Existence and Uniqueness Theorem

  • Bipolarity
  • · Replies 2 ·
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2

Undergrad How do I solve this Nonlinear First Order Differential Equation?

  • pvgomes07
  • · Replies 4 ·
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4

Graduate How Do You Solve the Grad-Shafranov Equation for Plasma Physics?

  • BacalhauGT
  • · Replies 14 ·
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14

Graduate Why is the Separation of Variables method valid?

  • Zag
  • · Replies 6 ·
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6

Graduate Material on how to go from data to differential equation

  • marellasunny
  • · Replies 6 ·
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6

Graduate Solution for higher order wave ODE

  • Romik
  • · Replies 9 ·
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9

Graduate Radiative/Convective Boundary Conditions for Heat Equation

  • sharpybox
  • · Replies 1 ·
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1
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3

Solving a first order differential equation

  • Logan Land
  • · Replies 5 ·
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5

Graduate Solving differential equation from variational principle

  • JulieK
  • · Replies 1 ·
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1

Solving a first order linear IVP

  • Logan Land
  • · Replies 17 ·
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17
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8

Graduate Transformation of a Cauchy-Euler equation

  • jawhnay
  • · Replies 3 ·
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3

Graduate Solving the Wave Equation in semi-infinite domain with easy ICs

  • Gengar
  • · Replies 1 ·
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1

Graduate Is the Sign of the Wronskian Arbitrary in Differential Equations?

  • 1MileCrash
  • · Replies 2 ·
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2

Graduate Series solutions near an irregular singularity

  • ShayanJ
  • · Replies 2 ·
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2

Graduate Numerical methods for nonlinear PDEs in large domains

  • paddy.
  • · Replies 4 ·
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4

Ggnore's question at Yahoo Answers (IVP, Laplace transform)

  • Fernando Revilla
  • · Replies 1 ·
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1
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1

Graduate Relationship between Fourier and Lpalace transforms

  • cocopops12
  • · Replies 4 ·
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4

Graduate How Do You Solve a PDE Involving Heat Transfer in a Circular Heat Source?

  • mehsus
  • · Replies 2 ·
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2

Graduate Where can I find proofs of these theorems?

  • Bipolarity
  • · Replies 4 ·
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4

Graduate Solving associated Legendre equation

  • ShayanJ
  • · Replies 1 ·
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1

Graduate Backward euler method for heat equation with neumann b.c.

  • omer21
  • · Replies 9 ·
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9

Graduate Solving a System of Differential Equations: Ants at the Corners of a Square

  • Arkuski
  • · Replies 14 ·
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14

Graduate Continuity equation, partial derivative and differential operators

  • pisgirl
  • · Replies 1 ·
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1

Finding an explicit solution for this variable

  • jcsm
  • · Replies 6 ·
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6

Graduate Need help solving this differential equation

  • MegaFlyman
  • · Replies 6 ·
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6

Graduate Need help to justify artificial viscosity

  • alvesker
  • · Replies 1 ·
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1

Undergrad Is this PDE linear or non-linear?

  • Ein Krieger
  • · Replies 2 ·
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2

Undergrad How do you differentiate Kirchoffs law?

  • Needhelp2013
  • · Replies 2 ·
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2

Show whether the given ODE is exact, then solve

  • r-soy
  • · Replies 7 ·
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7

Graduate Find a function from a Recursive Formula

  • loveinla
  • · Replies 3 ·
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3

Solving a Surprising Differential Equation

  • I like Serena
  • · Replies 9 ·
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9

Graduate Constant source Poisson eq in 2D, Dirichlet BC, average value?

  • david.b
  • · Replies 1 ·
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1

Undergrad Is There a Meaning Behind Leibniz's Derivative Notation?

  • Jacobim
  • · Replies 5 ·
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5

Solving an Exact Differential Equation (#1)

  • r-soy
  • · Replies 5 ·
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5

Graduate How Can I Solve This Differential Equation for Y?

  • JulieK
  • · Replies 7 ·
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7

Solving an Exact Differential Equation (#2)

  • r-soy
  • · Replies 1 ·
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1

Graduate Kinetics ODE Solutions: Understanding Rates and Concentrations in Chemistry

  • Big-Daddy
  • · Replies 2 ·
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2

Graduate Differential Equations and a vector analogy (weird question)

  • 1MileCrash
  • · Replies 5 ·
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5

Graduate How to Solve This Coupled PDE System Involving Complex Variables?

  • DukeLuke
  • · Replies 2 ·
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2

Solve Clairaut's Equation: Find Singular Solution

  • Suvadip
  • · Replies 3 ·
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3

Restricted 3-Body ODE simplification

  • Dustinsfl
  • · Replies 3 ·
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3

Finding Inclination of Rod on Cylinder to Wall

  • Suvadip
  • · Replies 1 ·
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1

Undergrad Is this a differential equation and what do I need to be able to

  • ZeeshanParvez
  • · Replies 5 ·
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5

Graduate Solving ODE: Get Help with y''(x)+(μ^2*c(x)+k^2)y=0

  • gleonard
  • · Replies 4 ·
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4

Graduate Help with computing/understanding Fourier Sine Expansion.

  • LoganS
  • · Replies 1 ·
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1

Simultaneous differential equation

  • Suvadip
  • · Replies 10 ·
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10

Graduate Can this differential equation be solved analytically or numerically?

  • JulieK
  • · Replies 3 ·
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3

Bezi_cat's question at Yahoo Answers (Unknown initial condition)

  • Fernando Revilla
  • · Replies 1 ·
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1

Solving for time in a hyperbolic trajectory

  • Dustinsfl
  • · Replies 1 ·
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1

Graduate Help with Annihilator Method for Non-homogeneous Second Order D.Es

  • Ryuzaki
  • · Replies 1 ·
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1

Graduate Can 3D Phase Space Surfaces Arise from Differential Equations?

  • marellasunny
  • · Replies 2 ·
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2

Graduate Compatibilty of the Dirichlet boundary condition

  • bhatiaharsh
  • · Replies 3 ·
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3

Graduate Solve DE Linearity: y^2 + (y^2)' + y^2 = 0

  • cocopops12
  • · Replies 3 ·
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3

Fourier series damped driven oscillator ODE

  • Dustinsfl
  • · Replies 2 ·
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2

Graduate Probobalistic interpretation of a PDE

  • kai_sikorski
  • · Replies 1 ·
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1

Graduate Second Order Equation - Change of variables

  • muzialis
  • · Replies 2 ·
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2

Undergrad Theory of Damping: General Equation?

  • Gackhammer
  • · Replies 2 ·
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2

Graduate Solving heat equation for heat-pulse in a point on the surface

  • Jbari
  • · Replies 19 ·
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19

Lulu M's question at Yahoo Answers (Third order linear differential equation)

  • Fernando Revilla
  • · Replies 1 ·
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1

Undergrad 3dimensional wave propogation.

  • Bradyns
  • · Replies 7 ·
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7

Graduate Bessel's Function by generating function

  • mtomk
  • · Replies 2 ·
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2

Graduate Solutions to PDE: Understanding and Simplifying the Process

  • AntSC
  • · Replies 4 ·
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4

Undergrad Linearizing Non-Linear ODEs: How to Transform Equations for Easier Solving?

  • AxiomOfChoice
  • · Replies 1 ·
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1

Solve ODE: Break into System of ODEs

  • Dustinsfl
  • · Replies 3 ·
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3

Undergrad Laplace transform sqaured differential

  • opul
  • · Replies 2 ·
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2

Mark's question at Yahoo Answers (Linear recurrence relation)

  • Fernando Revilla
  • · Replies 4 ·
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4

Lagrange Coefficients for Two-Body Equation of Motion

  • Dustinsfl
  • · Replies 8 ·
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8
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1

Stuck on Polar Coordinate Components?

  • Carla1985
  • · Replies 19 ·
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19

Undergrad How Can I Find These Five Unknowns in Beam Analysis?

  • hmk999
  • · Replies 3 ·
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3

Graduate Scaling Problem in Diffusion Equation

  • kayahan
  • · Replies 1 ·
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1

Graduate Laplace’s equation inside a semi-infinite strip

  • Hio
  • · Replies 1 ·
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1

Graduate How approximate a sextic polynomial to a lower degree polynomial

  • Romik
  • · Replies 6 ·
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6

Graduate On The Solution of Matrix Ricatti Equation ODE

  • X89codered89X
  • · Replies 9 ·
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9

Undergrad Differential Equations Euler's method

  • andyk23
  • · Replies 2 ·
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2

Arran's question at Yahoo Answers (linear system)

  • Fernando Revilla
  • · Replies 1 ·
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1

Undergrad What are constant coefficients in ODEs?

  • autodidude
  • · Replies 4 ·
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4

Flore-D's question at Yahoo Answers involving related rates

  • MarkFL
  • · Replies 1 ·
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1

Cannot isolate y (first order quadratic DE?)

  • GreenGoblin
  • · Replies 11 ·
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11

Graduate Did I solve this diff eq substition problem properly?

  • utnip123
  • · Replies 1 ·
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1

Graduate Can This Nonlinear ODE with Exponential Terms Be Solved Using Power Series?

  • MathematicalPhysicist
  • · Replies 4 ·
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4

Graduate Solving differential equations using surface intersections

  • marellasunny
  • · Replies 3 ·
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3

Write Ode as a System: Solving for $\theta$

  • Dustinsfl
  • · Replies 1 ·
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1

Undergrad How to solve a second order diff eq?

  • Binaryburst
  • · Replies 9 ·
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9

Graduate Can Fourier Series Simplify Solving Nonlinear ODEs with Oscillatory Inputs?

  • en51nm
  • · Replies 2 ·
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2

Graduate Numerical Integration of 2nd Order DE

  • strokebow
  • · Replies 11 ·
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11

Undergrad First Order Differential Equations where a<x<b (Intial value?)

  • kafuzz
  • · Replies 1 ·
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1

Graduate Solving PDEs: Deriving Wave Equation from u(x ± ct)

  • KenBakerMN
  • · Replies 4 ·
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4

Graduate Two coupled, second order differential equations

  • 3029298
  • · Replies 1 ·
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1