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.
I Sturm-Liouville Separation theorem
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A Need help with a differential equation
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I Finite Element Method: Weak form to Algebraic Equations?
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B Euler's method for second order DE
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I Solving PDE with Laplace Transforms & Inverse Lookup
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B Private solution to a polynomial differential equation
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I RL Circuit Current: Over Time, Initial I(0)=1
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I 2° order linear, homogeneous, variable coefficients
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I How Can Exponential Decay Reveal Initial Temperature?
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I Interval of existence and uniqueness of a separable 1st ODE
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I How to Solve the 3D Heat Equation with Limited PDE Experience?
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A Wave equation in cylindrical coordinates - different expression?
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I How to Solve Large Oscillations of a Pendulum?
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I Integrating factor of (y+1)dx+(4x-y)dy=0
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A Triple Product in Laplace Transform
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A Help solving non-linear ODE analytically
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MHB Solving a Non-Exact ODE: $(y-2x^2y)dx +xdy = 0$
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MHB How Do I Solve this 2nd Order Non-Linear ODE and Find Its Equilibrium Points?
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MHB Differential Equation: Tangents & Normals to y=x^2
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I How Do You Compute a Lipschitz Constant for a Trigonometric Function?
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I Need help with a derivative solution
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I Solving linear differential equations
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I Change of variable - partial derivative
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I I with differential equation(3x^2-2y^2)(dy/dx)=2xy
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A Imaginary time propagation to find eigenfunctions
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B Can you reason out a differential equation using logic?
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I How Should Derivatives in Multivariable Chain Rules Be Notated?
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I First order differential equations ?
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I Unconventional Approaches for Boundary Values in Computing Wave Equations
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I Poisson Equation Neumann boundaries singularity
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I Generating polynomials for a multistep method
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I The algorithms involved in finding a solution with numerical methods
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A Free damped vibration of a system of 2 dof, demostration
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A Differential equation with integral
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A Initial value ODE with shifting forcing function
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A Numerical Solution for Complex PDE (Ginzburg-Landau Eqn.)
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I Few more numerical methods question....?
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A Fourier Transform of a piecewise function
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I Differential equations and numerical methods questions
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I Which derivatives should I review for my DiffEq course?
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A Looking for a Reference on Smoothers for FEA
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MHB How Do You Calculate the Speed of a Car Based on the Differentiation Equation?
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MHB Help with another separable equation
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A Stability Analysis of Nonlinear Bessel-type ODE
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I Why do we linearise a non linear system
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Is This ODE a Bernoulli Equation and Can It Be Solved with Substitution?
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I How can I verify the solution for Poisson equation with forgotten factor?
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I Understanding the Chain Rule in Derivatives: An Analysis of MIT Lecture Video
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A Partial Differential - Thermodynamics
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I How to Approach Solving 2y+(y')^2+ax^b=0?
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A Numerical solution of two coupled nonlinear PDEs
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I Diagonalising a system of differential equations
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B A few differential equation questions
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I Change of variable (2nd order ODE)
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I Help with basic problem of kinematics
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MHB How to Solve a Separable Equation with Initial Condition u(0)=6?
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B Where is the best place to put the arbitrary constant?
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B Bessel Function of 1st and 2nd Kind
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B System of differential equations Basic question
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I Solving u_x=(sin(x))*(u) in Fourier space
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I Is this general solution correct?
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I Understanding Equations for Beginners
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MHB Showing Superposition: u(x, t) Equation
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MHB How Does Separation of Variables Solve the Heat Equation in a Metal Rod?
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A Valve closure boundary condition
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B Few basic questions about differential equations....
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Insights Solving Homogeneous Linear ODEs using Annihilators - Comments
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MHB Differentiation equation: equation of motion
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Laplace transform to solve a nonhomogeneous equation
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MHB Help to find asymptotic solution of linear ode
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A Solving a Boundary Value Problem: Proving u(x) < 0
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MHB Boundary Value Problem: Does it Have a Solution?
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A Is there an analytical solution to the following problem?
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A Help understanding this extrapolation technique
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I Confused about Finding the Green Function
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I What is the notation for referencing an ODE with different parameter values?
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I How Do You Derive the Cosine of an Integral in Pendulum Motion?
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A How to Solve the Laplace Equation on a Trapezoid?
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I How to find the inverse of an integral transform?
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I What happens if you divide by a differential?
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I What is the derivative of a matrix transpose?
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Is there an encyclopedia of DE that accepts solutions?
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A Nonhomogeneous second order nonlinear differential equations
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A Variation of Parameters for System of 1st order ODE
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B Complex Replacement: Justification?
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I Gamma Function Explained for Upperclassmen Math Students
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I Non-homogeneous systems with repeated eigenvalues
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A Why Are Hilbert Space Embeddings Used in FEM Eigenvalue Approximation?
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I Fourier transform of Dirac delta
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I Solution to PDEs via Fourier transform
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I What are the Laplace transforms of powers of y?
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I Fundamental solutions and fundamental matrices
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MHB Laplace Transform Help: Solving for Unknown Variables in Electrical Circuits
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MHB Damped spring differental equation
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MHB Turning 2nd order into 1st order
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I Clarification of classification of ODE
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I Zill DE text says (y-x)dx+(4xy)dy=0 can be rewritten as....
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MHB Where Did I Go Wrong with Orthogonal Trajectories of x^2 + y^2 = cx^3?
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A Verifying My Solution to an EDP: Agree or Disagree?
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A Boundary Value Problem Requiring Quarterwave Symmetry
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