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 Solving Romeo & Juliet's Love Dynamics: 1st Order Linear System of DEs
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Graduate Is the Blow Up Time of an ODE with Lipschitz Condition Continuous?
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Graduate Extremely difficult System of Differentil Equations
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High School Usual convention for proving differential equations
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Graduate Understanding Eigenvalue Problems
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Graduate Power series solutions for ODEs. When are there how many of them?
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Graduate Newtonian Central Force System
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Undergrad Test for Exactness, linearly dependent?
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Undergrad Differentiating complex numbers?
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Graduate Solving Laplace's Equation with Exponential Function
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Undergrad Why Does the Wronskian of Two Functions Yield Zero?
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Graduate Using chain rule to derive the path equation
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Undergrad Where can I find proofs for d. eq solutions?
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Graduate How to solve this 2nd order nonlinear differential equation
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Graduate Solve Modeling Higher-Order Diff Eqn: Free Undamped Motion w/ Spring
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Graduate Could anyone help me out for this Boundary Value Problem?
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Graduate Finding Critical Points of y1'=y2 and y2'=-kcos(y1)
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Graduate Shallow Water Equations and Initial Conditions
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Undergrad Undamped force oscillation formulas
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Graduate What are the three similar cases for examining Laplace's Equation boundaries?
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Graduate How Do You Solve a Second Order ODE Using Reduction of Order?
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Undergrad Finding aplitude of free undamped motion
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Graduate System ODE, nonconstant but periodic coefficients
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Graduate How do I minimize a function with a constraint using Lagrange-Euler method?
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Undergrad Solving D.eq. with Homogeneous Method: Tips and Tricks for Beginners
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Graduate Solving Inhomogeneous Wave PDE with Separation of Variables on (0,pi)
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Graduate Derivatives and Partial Derivatives
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Undergrad What is the Correct Particular Solution for y''-2y'-3y=-3te^-t?
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Graduate Completeness of Legendre Polynomials
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Graduate Variable Coefficient Differential Equation problem
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Graduate How to Solve a Complex 2D PDE in Toroidal Coordinates?
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Graduate What Black-Scholes Research Problem Could I Explore for a 20-30 Page Math Paper?
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Graduate Solving Laplace's Equation with Mass
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Graduate How Can Nonlinear ODEs Be Analytically Solved for Complex Potentials?
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Graduate Help with conversion from rectangular to spherical coordinates
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Undergrad Homogenous constant coefficient linear differential equations
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Graduate How Can I Determine Stability from Mathematica's Root Function Output?
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Graduate Variation of parameters and the constraint
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Graduate Problem with Crank-Nicholson for solving hyperbolic equations
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Graduate Laplace Transform of DE with Discontinuous Forcing Function
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Graduate Euler Lagrange equation - weak solutions?
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Graduate Can this first order non-linear ODE be solved for all values of r?
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Graduate Laplace equation on square (using fourier transform)
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Graduate Is This Civil Engineering PDE Linear?
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Undergrad 1st order nonhomogeneous dif'l e'n
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Graduate 4th order linear, with constant piecewise coefficients
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Graduate Why a PDE is an infinite dimensional system
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Undergrad Simultanious DE - Kinetic Reaction
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High School What does it mea for an equation to be homogeneous?
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Graduate Approaches to Runge Kutta step size adjustments
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Undergrad Help simple 2nd order linear ODE
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Undergrad System of Coupled Differential Equations
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Undergrad Help with Heaviside unit functions
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Graduate Evaluating Vorticity in a Parallelepiped Domain
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Graduate Heat Conduction of Metal Rod (Differential Equations)
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Graduate Eigenvalues of Linear Time Varying systems
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Graduate Is MATLAB's ode45 Suitable for Solving 2D Coupled Nonlinear ODEs?
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Undergrad Finding a general soution to a differential equation
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Graduate Finite Difference Discretization of a Fourth Order Partial Differential Term
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Undergrad Can the Z-transform be used for both continuous and discrete functions?
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Graduate Solving 3rd order ODE with B.C. of Numan and Dirichlet Type
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Graduate How do I find the minimum value of f(k) with summations and exponents?
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Undergrad How Can Friction Be Incorporated into a Brachistochrone Model?
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Graduate How to Handle Fourth Order Implicit Runge-Kutta Methods?
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Graduate Wronskian and Linear Independence of y1 = t2 and y2 = t|t| in Second Order ODEs
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Graduate The Convolution of Detla Functions
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Undergrad A quick explanation of stability?
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Graduate Second derivative of an autonomous ODE
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Graduate Helmholtz 2D PDE around general shape (eg a figure 8)
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Undergrad Solution to a DE using variation of parameters
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Graduate Who knows the original publication of Laplace transformation by Laplace?
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Graduate Dirac delta, generalizations of vector calculus and sigh vagueness
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Graduate Is the Earth a Stable System in Terms of Its Rotation Around the Sun?
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Undergrad Understanding Absolute Values.
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Graduate Mastering PDEs: Techniques and Tricks for Solving with Separation of Variables
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Graduate Can you help with this 2nd-order, linear, homog, w/const.coeff proof?
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Undergrad Y'' + 4y = ax + b how can i solve?
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Graduate Euler's formula & expressing combinations of sin and cos as cos
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Graduate Solving a PDE Eigenvalue Problem: Proving All Eigenvalues Are Positive
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Undergrad Advice on a great self study book. PDE
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Graduate Numerical Solution for BVODE without First Derivatives: Help Required
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Graduate PDE with non-constant coefficient
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Undergrad On differential equations texts
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Graduate ? solution of ( dy / dx ) + ( y / (sqrt(a+(x^2))) ) = 0
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Undergrad What are Spherical Harmonics and their Applicability in Applied Math?
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Graduate Understanding Symmetry in ODE Solutions
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Graduate Do Convergence Solutions of ODE/PDEs Match Their Asymptotic Solutions?
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Graduate Solving Diff. Equation of Epidemic Model: Help Needed
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Graduate Is the Dirac Delta Function Even?
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Graduate Is the Algorithm r_n+1= r_n/(1+sqrt(2-r_n)) Stable?
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Graduate Arnold: ODEs, Ch. 1, section 2.2
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Graduate Why is Arnold's extended phase space a strip rather than a rectangle?
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Graduate Divergence Theorem & Neumann Problem Explained
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Graduate Unsuccessful attempts to solve a linear second order PDE system
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Graduate Does the definition of Φ-invariance require that I(x) = T for all x in S?
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Graduate Newton's method with inequality constraint
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Graduate Coupled first order differential equations
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Graduate What are the conditions for the divergence of a function of r to be true?
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Undergrad HelpSolve Maximization Problem: 1170X1 + 1110X2
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Graduate Is the Proof of Uniqueness in Arnol'd's Vector Field Correct?
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