Differential Equations Forum

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Join in expert discussion on differential equation topics like ODE and PDE. Differential equations are an equation involving derivatives of a function or functions.
Graduate Dirichlet's problem is ill posed
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Graduate How to Find an Integrating Factor for an Inexact Differential Equation?
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Undergrad Laplace transform for system DFE
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Graduate How to Model Fish Population Dynamics Using First Order Differential Equations?
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Graduate General solution to third order differential equation
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Graduate 2nd order nonlinear differential equation
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Graduate Solving Odd Elliptic Equation with Greens Functions
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Graduate Equation simplifies if a certain parameter is small
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Graduate How to solve this coupled nonlinear equation?
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Graduate Method of Frobenius with exponential coefficients
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Graduate Solve Electrical Circuit Problem: Particular Solution
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Undergrad How can I solve a system of differential equations with a specific form?
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Undergrad Can Euler's Method Solve y'=y/x with Initial Conditions?
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Graduate First Order Differential Equation in Cylindrical Coordinates
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Graduate Change of variables in Seocnd order ODES
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Graduate Random Forced Exponential Diff Equations
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Graduate Frobenius power series repeated roots
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Graduate Solving y"+9y=H(t-1) with Laplace Transform
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Graduate [Numerical] Euler Backward method
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Undergrad Whats a non-trivial linear combination of these functions?
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Undergrad Please verfiy this differential substitution is mathamatically legal
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Undergrad Can Differential Equations Be Used to Create Art?
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Undergrad How to prove the derivatives of powers?
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Graduate Finite difference terms for boundaries
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Graduate What is the meaning of LaPlace and Poisson's equation in English?
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Undergrad These methods are widely used in both academic and real world applications.
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Undergrad Simple Differential Equation: Finding General Solution for y'\cos(x) = \sin(2x)
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Graduate Can Non-linear Systems be Solved Analytically?
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Undergrad Solving Differential Equations: the Euler D.E. and Linear D.E.s
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Graduate Perturbation theory and asymptotics
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Graduate Differential Algebra: Converting d(v+(dv/dr)dr)/dr
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Graduate Method of Images - Green's Function
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Graduate Can the Non-Homogenous Heat Equation be Solved Using Eigenfunctions?
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Graduate Understanding Laplace transforms.
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Graduate Solving Second-Order ODE: Transformation & Choosing s(x)
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Undergrad How do you model a spring and damper in series?
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Graduate Critical Points and Differential Equations Helppp
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Graduate Laplace Transforms (First Order DE with Initial Value)
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Undergrad When is a simple assumption not so simple?
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Graduate Coupled ODE with missing connecting derivatives
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Graduate Asymptotic behaviour of bessel functions
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Undergrad Integration bessel function (simple)
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Undergrad Solve Differential Equations problem
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Undergrad Need help to solve y'=(x^2+y^2)^(3/2)
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Graduate Solution of differential equation
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Graduate Continuity of partial derivatives
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Undergrad Theoretical Question: how can complex solutions be allowed?
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Graduate Solving a non-homogeneous ODE with Bessel functions?
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Graduate Existential Proof of a Unique Solution to a Set of Non-Linear Equations
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Graduate (y')^2+y^2=-2 why this equation has no general solution ?
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Graduate Linear Differential Equation: when x=x(y)
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Undergrad Where Can I Find Specific and General Solutions for ODEs?
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Graduate How Can I Evaluate Integrals Involving Hankel Functions?
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Graduate Can anyone solve this 1st order nonlinear ODE with constants a and b?
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Graduate Help with PDE: F(t)g(r)+V/R Derivative
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Undergrad Need help with ODE applicaiton questions
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Undergrad Laplace Transform ODE Solving: y'' + 2y' + y = 0 with Initial Conditions
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Undergrad Intuitive understanding of convolution?
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Undergrad Handling dx/dt as an ordinary fraction?
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Graduate Non-linear Differential Equation - Pulling my Hair
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Undergrad Analytically Solving a Differential Equation with Constants a, b, and c
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Graduate Can someone tell me exactly where my simple logic breaks down? (infinity \neq 1)
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Graduate Understanding Bifurcation Points in the Function dy/dt = y^3 + ay^2
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Graduate Solving ODE with Neumann Boundary: Finite Differences Method
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Undergrad Why is the right side called the input?
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Graduate No Constant Solution => No periodic solution
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Graduate Mathematica: 2nd order PDE variable coefficients
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Graduate Understanding and Solving ODEs with Inhomogeneous Boundary Conditions
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Graduate Help with solving a first order linear and first order non-linear
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Graduate Flicks diffusion equation - metabolism rate
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Undergrad Solve Recursion Equation: f(x)=-f(x-1)+g(x)
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Graduate Solving the simples Partial Differential Equations
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Graduate Two coupled Sturm-Liouville Eigenvalue Problems in 2-D
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Graduate Laplace transform physical meaning
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Undergrad Solve Equation of Motion for Spring Damper System
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Graduate General Method of Characteristics Problem
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Undergrad Finding the degree of a deferential equation
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Graduate Maximum principle for Delta u >0
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High School Understanding the Difference between \Delta x and dx in Differential Calculus
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Undergrad Which type differential equation is this?
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Graduate I am pissed And Variation of parameters. who, what, when, where, why?
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Graduate Differential equation reducible to Bessel's Equation
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Graduate Exact solution to advection equation in spherical coordinates
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Graduate Is the square of Heaviside function equal to Heaviside?
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Undergrad Finding Eigenvalues for u''+λu=0
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Graduate Help with a Helmholtz-like equation
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Graduate Mathematica and Variation of Parameters
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Undergrad Can't remember how to do this simple definite integral
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Graduate D'Alambert Equation: Solving for $\psi(\vec{r},t)$
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Graduate Nonlinear Elasticity: Calculating Internal Forces
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Graduate Sturm-Liouville Like Equation with Boundary Conditions on Second Derivative
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Undergrad How do you explain this, Equation?
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Graduate Why Might My Exact Equation Solution Be Incorrect?
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Graduate General Solution to Linear, Homogenius, Second-Order Differential Equation
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Undergrad Why Do We Use Integrating Factors in Solving First Order Linear ODEs?
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Undergrad Differential Eq using Substitution help
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Graduate Ordinary Differential Equations class
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Graduate How Do You Transform and Simplify the Inverse Laplace Function 1/[s(2s^2+2s+1)]?
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Graduate Numerical evaluation of modified Bessel equation
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Graduate Polynomials, Kernels and Derivatives
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