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.
A PDE discretization for semi-infinite boundary?
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A How to calculate the parabolic cylinder function D
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I Second order DE with Sine function
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I What method can be used to solve this pde?
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A How Does the Bifurcation Diagram in AUTO Represent Mathematical Concepts?
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I Constructing left invariant vector fields on SO(3)
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Simplifying Convolution Properties: Understanding the Delta Dirac Function
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MHB Limit of the solution - Which is the conclusion?
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I (Fluid Mechanics) stream function graph
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I Integrating Equation 1: Understanding the Answer
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B What Integral Transform is this?
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A Solving Equations: Expanding Powers Explained
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I Parameterization of linear operators on the holomorphisms
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MHB Integrating Factors for Solving Linear Differential Equations
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I Wave equation solution using Fourier Transform
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A Converting Partial Differential Equations to Frequency Domain
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B Can You Find the Constant Value K for a Slowly Inflating Balloon?
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B One Equation for multiple random curves?
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A How to find a differential equation if I know its solution?
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I Characteristics of trigonometric function compositions like sin(sin(x))
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I Derivation of phase change parameter in dispersive medium
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MHB Analyzing Local Behavior at x→0+ of y'+xy=1/x^3
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A Inverse Laplace transform of a piecewise defined function
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MHB -9.3.15 A tank contains 200 gal of fresh water
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B First Order Non-Linear ODE (what method to use?)
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I Finding eigenvalues for 4 DOF system
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I Help Solving an Equation with a Boundary Condition
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I Differential equation of all the conics in the plane
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I Lambert's Law differential equation
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I Ideal Gas Law and Differentiation
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A Can you solve (a-bx)y'+(c-dx)y-e=0 with a,b,c,d,e constants?
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I Solve Nonlinear DE: Friedmann Eqns for H 0-10^7
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I Classification of differential equation
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I Solving Poisson's Equation Using Finite Difference
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I What differential equations need to be solved more quickly?
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I Following an example. Implies L{2du/dt+1}=2s+1. I'm Confused.
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I How to find the integrating factor? (1st order ODE)
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MHB -242.7x.13 Solve the DE \dfrac{dy}{dx}=7x^6e^{-y}
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I Does f(x,y) = dy/dx or f'(x) in Mathematical Function Notation?
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I PDE Heat Equation Solution with Homogenous Boundary Conditions | PF Discussion
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I Analyzing a 2nd Order Non-Linear ODE with Variable Substitution
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I Difference between Wronskian and other methods
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A Exact solution to Poisson equation in 2D
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MHB Show that the function is the solution
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MHB Uniqueness of Solution for $\Delta u=0$ in a Ball with Boundary Condition $\phi$
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MHB Questions about proof of theorem
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A Solve DE for theta component (hydrogen WF)
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A Solve DE: m, h, E, Z, t, k, a (1-4)
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A How do i perform differentiation over summation?
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Parameter sensitivity analysis for nonlinear system
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I Solution of an ODE in series Frobenius method
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I A question about boundary conditions in Green's functions
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Remembering Special Function Equations....
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MHB How Do We Get the Last Two Relations in the Mean Value Proposition Proof?
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Insights Partial Differentiation Without Tears - Comments
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I Wavevector k in Helmholtz Equation
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B Elementary question on integrating an equation
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I A somewhat conceptual question about Green's functions
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MHB 2 Differential Equations by Substitution
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I 2nd order differential equation problem with sin(theta)
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MHB -206.q3.2 method of integrating factor
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I Linear independence of functions
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I BVP vs IVP when solving for eigenvalues
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B How Do Jacobi Elliptic Functions Solve Nonlinear Differential Equations?
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A FEM for Solving PDEs: Beginner Textbooks & Fluid Flow
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MHB Applying the Chain Rule to Derive Solutions of the Heat Equation
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MHB Show that the function is a solution of the equation
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I How to solve the two following differential equations?
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I Constant solution and uniqueness of separable differential eq
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B Separation of variables - rocket equation
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MHB Solve Diff. Eq. for g(x) w.r.t f(x) & c
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A How Can Taylor Series Expansion Help Solve This Nonlinear Differential Equation?
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MHB The functions is equal to zero for x=0
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MHB How do we apply the proposition?
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MHB How Does the Lemma and Theorem Apply to $Lu=f$ in $\Omega$?
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I What Does Figure 1 Reveal About the Stability Limits of Runge-Kutta Methods?
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A Obtaining Step Response for Linear Systems in Sinusoidal Frequency Domain
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A How is this 'root stability' differential equation derived?
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MHB How can we improve the estimate?
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MHB Can we just use a part of the boundary?
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MHB Maximum principle for subharmonic functions
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I Can you check the solution for this second order ODE?
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I Proving Hermite polynomials satisfy Hermite's equation
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A Differential equations without Green functions
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MHB Differential equations stability
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B Can This ODE Solution f'(x)=f(2-x) Be Correctly Solved?
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I Basic Separation of Variables problem
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I Derivative of A Def. Integral Equals Another Def. Integral?
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I Understanding Stability Regions in Numerical Methods
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A Backward finite differences on higher order derivative
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MHB Show that the function equals to the zero function
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MHB Show that limit is equal to zero
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I Second order differential equation
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I Using Separation of Variables to Modify Neutron Density Diff
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A Solving two simultaneous integro-differential equations
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MHB Computing the Integral of a Harmonic Function with Boundary Conditions.
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I 2nd Order Linear ODE w/ nonconstant coefficient
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A Second Order Differential equation Bessel-type
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MHB Find the function at the point (0,0)
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A Computing first derivative based on second derivative
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