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 What are the conditions for the divergence of a function of r to be true?

  • avidfury
  • · Replies 1 ·
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Undergrad HelpSolve Maximization Problem: 1170X1 + 1110X2

  • chwala
  • · Replies 2 ·
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2

Graduate Is the Proof of Uniqueness in Arnol'd's Vector Field Correct?

  • osnarf
  • · Replies 3 ·
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3

Undergrad Need help solving simple Differential problem (help)

  • Jennifer_88
  • · Replies 3 ·
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3

Undergrad Error in Numerical Solution of ODE by Euler Method - Patrick

  • patrick1990
  • · Replies 2 ·
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2

Undergrad Simple Differential problem (help)

  • Jennifer_88
  • · Replies 1 ·
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1

Graduate Trouble with The Snowplow Problem

  • Xyius
  • · Replies 8 ·
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8

Undergrad Could you help me solve first order diff eq?

  • hangainlover
  • · Replies 4 ·
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4

Graduate The Existence Uniqueness Theorem

  • bmed90
  • · Replies 2 ·
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2

Undergrad Proof Partial Derivative definition

  • Jonnyquest
  • · Replies 12 ·
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12

Undergrad Solving ordinary differential equation

  • thavamaran
  • · Replies 2 ·
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2

Graduate Effortlessly Solve C^{2} Functions with Quick and Simple Tips | Get Help Now!

  • coolalac
  • · Replies 1 ·
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Undergrad Simple differential equation question

  • n0_3sc
  • · Replies 6 ·
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6

Undergrad Solving Separable Differential Equation with Initial Condition

  • alchal
  • · Replies 2 ·
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2

Graduate Integrating Factor and Potential Function for Non-Exact Multi-Variable ODEs

  • sleventh
  • · Replies 4 ·
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4

Graduate Methods to linearize terms of PDE

  • robby991
  • · Replies 2 ·
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2

Graduate Computing Inner Products of Vectors: a,b,c,d,e,f

  • alkhaldi20
  • · Replies 2 ·
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2

Graduate Change of Variable for Limit Coating Hypothesis | Exam Study Help

  • Frenchie_Girl
  • · Replies 1 ·
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1

Graduate How is this possible? (simple fourier series)

  • nonequilibrium
  • · Replies 3 ·
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3

Graduate Understanding the Derivative of Angular Velocity in Lagrangian Mechanics

  • blueberrypies
  • · Replies 5 ·
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5

Graduate Software for crank-nicholson method

  • NiclasN
  • · Replies 5 ·
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5

Graduate Does convergence imply asymptotic relation

  • chwala
  • · Replies 4 ·
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4

High School What Does Convergent Mean in Numerical Methods for Differential Equations?

  • PumkinMonster
  • · Replies 2 ·
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2

Graduate What does over determination mean?

  • pellman
  • · Replies 2 ·
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2

Graduate Understanding the One-Dimensional Heat Equation

  • shoogar
  • · Replies 3 ·
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3

Undergrad Is this predictive iterative method the same as the Newton-Raphson method?

  • yuiop
  • · Replies 2 ·
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2

Graduate Need help, impossible differential equation

  • Juseb3
  • · Replies 6 ·
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6

Graduate Solution of Bessel Differential Equation Using Bessel Function

  • Kopernikus89
  • · Replies 4 ·
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4

Graduate Solving System of Non-Linear Diff. Equations

  • izotop
  • · Replies 9 ·
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9

Graduate Linear differential equation; Green's function

  • capandbells
  • · Replies 1 ·
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1

Undergrad How can I convert a 2nd order ODE to a 1st order ODE?

  • jrv24
  • · Replies 3 ·
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3

Undergrad What are some good intro to differential equations books?

  • huskerwr38
  • · Replies 1 ·
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1

Graduate Solving PDEs without Boundary Conditions: A Conundrum?

  • zsua
  • · Replies 2 ·
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2

Graduate Continuous/differentiable functions

  • fk378
  • · Replies 1 ·
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1

Undergrad Differential Equations - 1 vs 2 Variables?

  • amaresh92
  • · Replies 3 ·
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3

Undergrad The integral of the taylor expansion of any expression

  • quietrain
  • · Replies 4 ·
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4

Undergrad Solving a System of Differential Equations: dx/dt = y^2 - x^2, dy/dt = -2xy

  • atomqwerty
  • · Replies 8 ·
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8

Graduate How to Handle Boundary Conditions in Central Difference Scheme?

  • robby991
  • · Replies 22 ·
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22

Graduate Linearizing ordinary differential equations

  • thavamaran
  • · Replies 1 ·
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1

Undergrad Solving Trivial Second Order ODEs

  • terryphi
  • · Replies 4 ·
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4

High School Solving dy/dx=sinh(ux/to): Need Help!

  • scrapironryan
  • · Replies 1 ·
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1

Graduate Integro-Differential Equation: Analytical Approach?

  • saltydog
  • · Replies 3 ·
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3

Graduate Solving Linear Second Order PDE with Mixed Derivative Term?

  • meatpuppet
  • · Replies 10 ·
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10

Graduate One fundamental property of Fourier Series

  • viczhang
  • · Replies 1 ·
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1

Graduate Wikipedia's definition of a dynamical system

  • phibonacci
  • · Replies 2 ·
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2

Undergrad Linear approximations around a given fixed point.

  • andyb177
  • · Replies 2 ·
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2

Graduate Where Can I Find the Caratheodory Existence Theorem?

  • hshiromoto
  • · Replies 2 ·
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2

Graduate Autonomous polynomial differential equation

  • janet123
  • · Replies 4 ·
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4

Graduate Have you tried using ridge regression to solve for a singular Jacobian matrix?

  • top40
  • · Replies 8 ·
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8

Graduate What Values of C Cause Resonance in a Linear System with Given Solutions?

  • lukepeterpaul
  • · Replies 2 ·
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Undergrad How to use of the method of undetermined coefficients

  • johnlemar_09
  • · Replies 2 ·
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2

Graduate Asymptotic behavior of coefficients

  • intervoxel
  • · Replies 2 ·
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Graduate Can a Non-Linear Differential Equation Have a Soliton Solution?

  • caduceus
  • · Replies 2 ·
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2

Graduate Solving Diffuse Light Simulation with Double Integral Equation?

  • Luonnos
  • · Replies 1 ·
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1

Undergrad Why the domain of a DE solution must be an interval?

  • cathode-ray
  • · Replies 2 ·
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2

Undergrad How Do I Solve This Differential Equation Involving y/x?

  • boris90
  • · Replies 4 ·
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4

Graduate 2nd order nonlinear imaginary partial dif eqn

  • FD2010
  • · Replies 7 ·
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7

Graduate What is the significance of -Mu in equation equality and boundedness?

  • ssky
  • · Replies 6 ·
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6

Graduate How Do You Solve the SIS Disease Model Equation?

  • tactical
  • · Replies 2 ·
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2

Undergrad How Do You Solve the Differential Equation dy/dt + (1/t)y = t*exp(-2t)?

  • Eggmans
  • · Replies 2 ·
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2

Graduate Initial value problem for system of two diff. equation

  • goos
  • · Replies 5 ·
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5

Graduate Understanding Riccati's ODE Variant: A Generalized RODE Explanation

  • MathematicalPhysicist
  • · Replies 5 ·
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5

Graduate Matrix Differential Equation with Generalized Eigenvectors

  • patchwerk
  • · Replies 2 ·
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2

Graduate Critical Points in a system of differential equations

  • rreaves
  • · Replies 1 ·
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1

Undergrad How can Laplace & Convolution theorem be applied to solve homework problems?

  • miuw
  • · Replies 1 ·
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1

Graduate Differentiating Planck's radiation law

  • Piano man
  • · Replies 2 ·
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2

Undergrad Finding the Initial Point for Runge Kutta 4th Order

  • sos 2011
  • · Replies 4 ·
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4

Undergrad Unit Circle Solutions for Various Angles

  • Cromulence
  • · Replies 1 ·
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1

Graduate Question on PDE (transport problem)

  • LaurentKL
  • · Replies 3 ·
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3

Graduate Series converges to a function that satisfies the wave equation

  • Fogs
  • · Replies 2 ·
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2

Graduate Is There an Analytic Solution for This Crazy ODE?

  • Brin
  • · Replies 4 ·
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4

Graduate Proving the Constant Wronskian Theorem for Scalar ODEs

  • heinerL
  • · Replies 6 ·
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6

Undergrad Showing that x and 1+x² are solutions to this DE

  • MuhTheKuh
  • · Replies 1 ·
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1

Undergrad Exact vs. Non-Exact Differential Equations: What Sets Them Apart?

  • Gear300
  • · Replies 3 ·
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3

Graduate System of 1st order nonlinear PDE's

  • raultrigo
  • · Replies 1 ·
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1

Graduate Methods for Solving Non-Linear Second Order Systems of Differential Equations

  • LAHLH
  • · Replies 10 ·
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10

Graduate Notation for separable partial differential equations

  • frozenguy
  • · Replies 2 ·
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2

Graduate Differential Equation with 4 states

  • Coomb Raider
  • · Replies 1 ·
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1

Graduate What Does the [] of [X]t Mean in Girsanov Theorem?

  • tennishaha
  • · Replies 2 ·
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2

Graduate Error function as a solution to a second order ode

  • Juggler123
  • · Replies 2 ·
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2

Undergrad Integrating Factor Greetings: What is it & Why Use It?

  • amaresh92
  • · Replies 1 ·
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1

Graduate Possible 3rd Order Non-Linear Diffeq Solutions

  • HerpaDerp
  • · Replies 1 ·
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1

Graduate The Contour Rule for Inverse Mellin Transforms

  • Hoplite
  • · Replies 9 ·
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9

Graduate X' = y-2xy' = 2x-y Whenever you look for equilibrium points

  • EnzoF61
  • · Replies 5 ·
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5

Graduate Can the Jacobian be used for out of plane rectangles?

  • TheFerruccio
  • · Replies 1 ·
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1

Graduate How to Choose Bessel Function Order for Fourier-Bessel Series Expansion?

  • phioder
  • · Replies 12 ·
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12

Graduate Traffic dynamics (traveling wave)

  • anotherghost
  • · Replies 1 ·
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1

Undergrad How to Solve a Differential Equation Using the Runge-Kutta Method?

  • maxtor101
  • · Replies 2 ·
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2

Graduate Question about zero input frequency response

  • royzizzle
  • · Replies 3 ·
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3

Graduate Green's Function: Understanding Laplace's 2nd Identity

  • rsq_a
  • · Replies 6 ·
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6

Undergrad Unknown Inverse Laplace Transform

  • MathsDude69
  • · Replies 2 ·
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2

Undergrad How to Solve a 2nd Order Differential Equation with Singular Points?

  • jhon
  • · Replies 4 ·
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4

Graduate How Do I Apply the Fourier Transform to a Laplacian Equation?

  • iamazad24
  • · Replies 3 ·
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3

Graduate How to calculate this integral for harmonic function?

  • kakarotyjn
  • · Replies 1 ·
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1

Undergrad How to Derive Euler Differential Equation for n=0?

  • yungman
  • · Replies 4 ·
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4

Undergrad Finding Particular Steps of Derivation

  • eskie
  • · Replies 1 ·
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1

Undergrad Method of undetermined coefficients

  • phantomcow2
  • · Replies 4 ·
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4

Undergrad Simple Differential Equation (Ordinary Differential Equation)

  • eskie
  • · Replies 7 ·
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7

Graduate Series Solutions to Linear ODEs for Refreshing Your Skills

  • arenaninja
  • · Replies 2 ·
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2

Graduate Extension of Variation of Parameters to First Order Non-Linear ODE?

  • Rruffpaw
  • · Replies 7 ·
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7