Differential Equations Forum

Post thread
Join in expert discussion on differential equation topics like ODE and PDE. Differential equations are an equation involving derivatives of a function or functions.
Undergrad Understanding the Relationship Between Dripping Rate and Water Clock Design
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Solution of this differential equation
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Solving the Ode Emden-Fowler Equation: A Scientist's Perspective
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Stuck on Laplace Transform of Odd Trig Function
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Why Does Sigma(s) Cause Complex Roots in My Equation?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Existence and Uniqueness Theorem
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How do I solve this Nonlinear First Order Differential Equation?
  • · Replies 4 ·
Replies
4
Views
3K
Graduate How Do You Solve the Grad-Shafranov Equation for Plasma Physics?
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Why is the Separation of Variables method valid?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Material on how to go from data to differential equation
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Solution for higher order wave ODE
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Radiative/Convective Boundary Conditions for Heat Equation
  • · Replies 1 ·
Replies
1
Views
3K
Tips for Writing an Effective Resume""Writing a Winning Resume: Essential Tips
  • · Replies 3 ·
Replies
3
Views
2K
MHB Solving a first order differential equation
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Solving differential equation from variational principle
  • · Replies 1 ·
Replies
1
Views
2K
MHB Solving a first order linear IVP
  • · Replies 17 ·
Replies
17
Views
4K
MHB Logan's question at Yahoo Answers involving an IVP with a linear 1st order ODE
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Transformation of a Cauchy-Euler equation
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Solving the Wave Equation in semi-infinite domain with easy ICs
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Is the Sign of the Wronskian Arbitrary in Differential Equations?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Series solutions near an irregular singularity
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Numerical methods for nonlinear PDEs in large domains
  • · Replies 4 ·
Replies
4
Views
2K
MHB Ggnore's question at Yahoo Answers (IVP, Laplace transform)
  • · Replies 1 ·
Replies
1
Views
2K
MHB Lagrangian Mechanics: Solving $\mathcal{L}(X,x,\dot{X},\dot{x})$ for 2 Masses
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Relationship between Fourier and Lpalace transforms
  • · Replies 4 ·
Replies
4
Views
2K
Graduate How Do You Solve a PDE Involving Heat Transfer in a Circular Heat Source?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Where can I find proofs of these theorems?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Solving associated Legendre equation
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Backward euler method for heat equation with neumann b.c.
  • · Replies 9 ·
Replies
9
Views
7K
Graduate Solving a System of Differential Equations: Ants at the Corners of a Square
  • · Replies 14 ·
Replies
14
Views
5K
Graduate Continuity equation, partial derivative and differential operators
  • · Replies 1 ·
Replies
1
Views
2K
MHB Finding an explicit solution for this variable
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Need help solving this differential equation
  • · Replies 6 ·
Replies
6
Views
3K
Graduate Need help to justify artificial viscosity
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Is this PDE linear or non-linear?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad How do you differentiate Kirchoffs law?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Show whether the given ODE is exact, then solve
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Find a function from a Recursive Formula
  • · Replies 3 ·
Replies
3
Views
2K
MHB Solving a Surprising Differential Equation
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Constant source Poisson eq in 2D, Dirichlet BC, average value?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Is There a Meaning Behind Leibniz's Derivative Notation?
  • · Replies 5 ·
Replies
5
Views
2K
MHB Solving an Exact Differential Equation (#1)
  • · Replies 5 ·
Replies
5
Views
2K
Graduate How Can I Solve This Differential Equation for Y?
  • · Replies 7 ·
Replies
7
Views
2K
MHB Solving an Exact Differential Equation (#2)
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Kinetics ODE Solutions: Understanding Rates and Concentrations in Chemistry
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Differential Equations and a vector analogy (weird question)
  • · Replies 5 ·
Replies
5
Views
3K
Graduate How to Solve This Coupled PDE System Involving Complex Variables?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Solve Clairaut's Equation: Find Singular Solution
  • · Replies 3 ·
Replies
3
Views
2K
MHB Restricted 3-Body ODE simplification
  • · Replies 3 ·
Replies
3
Views
2K
MHB Finding Inclination of Rod on Cylinder to Wall
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Is this a differential equation and what do I need to be able to
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Solving ODE: Get Help with y''(x)+(μ^2*c(x)+k^2)y=0
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Help with computing/understanding Fourier Sine Expansion.
  • · Replies 1 ·
Replies
1
Views
2K
MHB Simultaneous differential equation
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Can this differential equation be solved analytically or numerically?
  • · Replies 3 ·
Replies
3
Views
2K
MHB Bezi_cat's question at Yahoo Answers (Unknown initial condition)
  • · Replies 1 ·
Replies
1
Views
7K
MHB Solving for time in a hyperbolic trajectory
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Help with Annihilator Method for Non-homogeneous Second Order D.Es
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Can 3D Phase Space Surfaces Arise from Differential Equations?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Compatibilty of the Dirichlet boundary condition
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Solve DE Linearity: y^2 + (y^2)' + y^2 = 0
  • · Replies 3 ·
Replies
3
Views
2K
MHB Fourier series damped driven oscillator ODE
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Probobalistic interpretation of a PDE
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Second Order Equation - Change of variables
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Theory of Damping: General Equation?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Solving heat equation for heat-pulse in a point on the surface
  • · Replies 19 ·
Replies
19
Views
7K
MHB Lulu M's question at Yahoo Answers (Third order linear differential equation)
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad 3dimensional wave propogation.
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Bessel's Function by generating function
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Solutions to PDE: Understanding and Simplifying the Process
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad Linearizing Non-Linear ODEs: How to Transform Equations for Easier Solving?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Solve ODE: Break into System of ODEs
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Laplace transform sqaured differential
  • · Replies 2 ·
Replies
2
Views
2K
MHB Mark's question at Yahoo Answers (Linear recurrence relation)
  • · Replies 4 ·
Replies
4
Views
3K
MHB Lagrange Coefficients for Two-Body Equation of Motion
  • · Replies 8 ·
Replies
8
Views
3K
[MUST READ] This forum is not for homework or any textbook-style questions.
  • · Replies 1 ·
Replies
1
Views
37K
MHB Stuck on Polar Coordinate Components?
  • · Replies 19 ·
Replies
19
Views
4K
Undergrad How Can I Find These Five Unknowns in Beam Analysis?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Scaling Problem in Diffusion Equation
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Laplace’s equation inside a semi-infinite strip
  • · Replies 1 ·
Replies
1
Views
10K
Graduate How approximate a sextic polynomial to a lower degree polynomial
  • · Replies 6 ·
Replies
6
Views
5K
Graduate On The Solution of Matrix Ricatti Equation ODE
  • · Replies 9 ·
Replies
9
Views
3K
Undergrad Differential Equations Euler's method
  • · Replies 2 ·
Replies
2
Views
7K
MHB Arran's question at Yahoo Answers (linear system)
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad What are constant coefficients in ODEs?
  • · Replies 4 ·
Replies
4
Views
2K
MHB Flore-D's question at Yahoo Answers involving related rates
  • · Replies 1 ·
Replies
1
Views
4K
MHB Cannot isolate y (first order quadratic DE?)
  • · Replies 11 ·
Replies
11
Views
3K
Graduate Did I solve this diff eq substition problem properly?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Can This Nonlinear ODE with Exponential Terms Be Solved Using Power Series?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Solving differential equations using surface intersections
  • · Replies 3 ·
Replies
3
Views
2K
MHB Write Ode as a System: Solving for $\theta$
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad How to solve a second order diff eq?
  • · Replies 9 ·
Replies
9
Views
4K
Graduate Can Fourier Series Simplify Solving Nonlinear ODEs with Oscillatory Inputs?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Numerical Integration of 2nd Order DE
  • · Replies 11 ·
Replies
11
Views
5K
Undergrad First Order Differential Equations where a<x<b (Intial value?)
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Solving PDEs: Deriving Wave Equation from u(x ± ct)
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Two coupled, second order differential equations
  • · Replies 1 ·
Replies
1
Views
3K
High School What Do ODE, PDE, DDE, SDE, and DAE Stand For?
  • · Replies 3 ·
Replies
3
Views
11K
MHB RF's question at Yahoo Answers (linear independence, Wronskian).
  • · Replies 1 ·
Replies
1
Views
2K
MHB How to Integrate a Function to Solve Air Resistance Equations?
  • · Replies 7 ·
Replies
7
Views
2K