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.
MHB Torricelli's Law of Fluids: Solving a Differential Equation for Drainage Time
  • · Replies 1 ·
Replies
1
Views
3K
Graduate A general methodical way to solve all first degree first order
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Solution for mixed differential and algebraic equations
  • · Replies 1 ·
Replies
1
Views
2K
MHB Evaluating an Integral: Laplace Transform Method
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Solving 2nd ODE and Multivariable Calculus for Wave Equation
  • · Replies 4 ·
Replies
4
Views
2K
MHB Phase Line and long term behavior with initial value
  • · Replies 2 ·
Replies
2
Views
3K
MHB Tracking Kool-Aid Through Lakes Alpha & Beta
  • · Replies 5 ·
Replies
5
Views
13K
Graduate Fourier transform of multivalued functions
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Solving differential equation(separable)
  • · Replies 1 ·
Replies
1
Views
1K
Undergrad How Can You Simplify sin(n*pi/3) in Terms of Powers of 1?
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Separable Differential Equations Using Initial Values
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Inexact differential equation with unknown function M(t)
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad E to the -y plus trial and error math?
  • · Replies 8 ·
Replies
8
Views
2K
MHB Finding State Matrices for a Mass Spring System
  • · Replies 1 ·
Replies
1
Views
2K
MHB Solving D.E Word Problem: Radium Decompose, Half Life 1600, 200 Years
  • · Replies 12 ·
Replies
12
Views
4K
MHB Solving Integrals with Exponential Functions
  • · Replies 9 ·
Replies
9
Views
3K
MHB What is this problem asking for?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Differential Equation of Unknown Type
  • · Replies 15 ·
Replies
15
Views
4K
MHB Differential equation population growth problem
  • · Replies 5 ·
Replies
5
Views
18K
MHB Triple Population in X Years: Proportional Increase Rate Calculation
  • · Replies 1 ·
Replies
1
Views
2K
MHB Interpreting of another proposition full of symbols
  • · Replies 1 ·
Replies
1
Views
2K
MHB Meaning of Symbols in Differential Equation
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad General Question about Undetermined Coefficients
  • · Replies 4 ·
Replies
4
Views
2K
MHB Solving Homogeneous Function Confusion: ln(Y/X) in Numerator
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Solving x''(t)+Kx(t)=0 when x has the form sin(ωt+ø): the soln r LD
  • · Replies 3 ·
Replies
3
Views
2K
MHB Help Me Solve This Differential Equation!
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Any suggestions for finding the inverse Laplace transform of 11/(s^2+16)^2?
  • · Replies 1 ·
Replies
1
Views
2K
MHB The finite difference method for the heat equation-error
  • · Replies 16 ·
Replies
16
Views
4K
Undergrad Laplace Transform for shifted Unit Step Function
  • · Replies 1 ·
Replies
1
Views
2K
MHB What Is the Differential Equation for Given Solutions?
  • · Replies 11 ·
Replies
11
Views
3K
MHB Elimination of arbitrary constants 2
  • · Replies 7 ·
Replies
7
Views
6K
MHB Finding D.E Solutions for $x\sin(y)+x^2y=c$ and $3x^2-xy^2=c$
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Partial differential equation discretization. HELP D:
  • · Replies 1 ·
Replies
1
Views
2K
MHB Elimination of arbitrary constants.
  • · Replies 8 ·
Replies
8
Views
4K
Graduate How to Formulate a Differential Equation for Deformable Object Manipulation?
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Finding dE/dx: Using the Chain Rule
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Solution: Solving Harmonic Oscillation Differential Equation
  • · Replies 4 ·
Replies
4
Views
2K
MHB DE Tutorial - Chapter 1: The Basics of Ordinary Differential Equations
  • · Replies 1 ·
Replies
1
Views
13K
MHB Assistance needed for this ODE problem
  • · Replies 3 ·
Replies
3
Views
7K
Graduate What does the operator A'A represent in image processing?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Ewaz's question at Yahoo Answers regarding a Bernoulli Equation
  • · Replies 1 ·
Replies
1
Views
2K
MHB How can I choose which is the most suitable method?
  • · Replies 15 ·
Replies
15
Views
3K
MHB How to Solve the Given Differential Equation?
  • · Replies 13 ·
Replies
13
Views
3K
MHB Find u,v of the differential equation
  • · Replies 29 ·
Replies
29
Views
4K
Graduate Elegant 1/(1-x) Identities for Complex Algebraic Manipulations and Logarithms
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Stability and Accuracy of Diffusion Equation Solution
  • · Replies 2 ·
Replies
2
Views
2K
MHB Mass is subject to external force
  • · Replies 4 ·
Replies
4
Views
2K
Graduate How Do You Solve a 2nd Order Linear Non-Homogeneous DE with Imaginary Roots?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Mathematical Modeling Problem for 500-gal Aquarium Impurities
  • · Replies 1 ·
Replies
1
Views
3K
MHB Find Integral: $\int_{a}^{\infty}e^{-st}t^{n}dt$
  • · Replies 39 ·
2
Replies
39
Views
6K
Graduate Boundary conditions for inhomogeneous non-sepearable 3D PDE
  • · Replies 1 ·
Replies
1
Views
2K
MHB Verify a function is a solution.
  • · Replies 2 ·
Replies
2
Views
2K
MHB How can I show that there is exactly one f?
  • · Replies 6 ·
Replies
6
Views
2K
MHB Finite element method for the construction of the approximation of the solution
  • · Replies 1 ·
Replies
1
Views
2K
MHB Orthogonal trajectories of curves
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Integral after alpha parametrization
  • · Replies 1 ·
Replies
1
Views
1K
MHB Numerical Methods: Solving Exam Pickle with Factorization & Stability
  • · Replies 8 ·
Replies
8
Views
3K
MHB Amber's questions at Yahoo Answers regarding linear first order ODEs
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Help with logistic growth problem
  • · Replies 1 ·
Replies
1
Views
2K
MHB Differential eq of first order and higher degree
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Why Is the Fourier Transform's Conversion Factor Split Between Kernels?
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Other definition for fourier series
  • · Replies 3 ·
Replies
3
Views
2K
MHB Laplace Transform with two steps
  • · Replies 2 ·
Replies
2
Views
2K
MHB Inverse Laplace Transform problem
  • · Replies 1 ·
Replies
1
Views
2K
MHB ZZZZZzzz's question at Yahoo Answers regarding a mixing problem
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What is the validity of the supposed solution to the Millenium Problem?
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad Please suggest some good topics for Maths research paper
  • · Replies 6 ·
Replies
6
Views
7K
MHB Heat equation with annoying source term
  • · Replies 1 ·
Replies
1
Views
2K
Graduate General Solution for 2nd Order PDE: Is it Possible?
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Determining Which Variable Is Independent
  • · Replies 1 ·
Replies
1
Views
1K
Graduate Find a solution for differential equations
  • · Replies 3 ·
Replies
3
Views
2K
MHB How to Solve This 2nd Order ODE in Control Systems?
  • · Replies 2 ·
Replies
2
Views
2K
MHB Differential Approximation Task I
  • · Replies 16 ·
Replies
16
Views
3K
Graduate Method of characteristics and second order PDE.
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad What are the unknown functions and variables in this Mathematica program?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Differential Approximation with Boundary Conditions
  • · Replies 21 ·
Replies
21
Views
4K
Graduate How do we find the Fourier coefficient for a cosine term in a Fourier series?
  • · Replies 4 ·
Replies
4
Views
2K
MHB Transfer function of a damped hanging mass
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Which Values of x and y Should I Use for Poisson PDE Discretisation?
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Differential Equation Solver Software: Find Your Solution Now
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How is the initial conditions for PDE?
  • · Replies 10 ·
Replies
10
Views
3K
Graduate Solving Logistic ODE with Non-commuting Matrices
  • · Replies 6 ·
Replies
6
Views
2K
Graduate How Are Derivatives Interrelated in ODEs and PDEs?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate NUMERICAL approach to NONLINEAR PDE
  • · Replies 4 ·
Replies
4
Views
2K
Graduate What is the class of this equation?
  • · Replies 1 ·
Replies
1
Views
2K
MHB Finite difference method-convergence
  • · Replies 31 ·
2
Replies
31
Views
7K
MHB Lotka-Volterra equations mistake
  • · Replies 1 ·
Replies
1
Views
2K
MHB Differential Approximation Task III
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Difference between generating function and Rodrigue's formula?
  • · Replies 3 ·
Replies
3
Views
3K
MHB Non-linear first order differential equation question
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Solving DE of Second Order - Computer Engineer in Sweden
  • · Replies 5 ·
Replies
5
Views
2K
MHB Solve Inhomogeneous Linear Diff Eq: Zizi’s Question @ Yahoo Answers
  • · Replies 1 ·
Replies
1
Views
2K
MHB Homogeneous, linear, first-order, ordinary differential equation mistake
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Solving Laplacian Operators and DEs
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Help with a wave equation derivation
  • · Replies 2 ·
Replies
2
Views
2K
MHB Understanding the Reduction of Order Method for Solving LODEs
  • · Replies 2 ·
Replies
2
Views
2K
MHB Existence of Laplace transform
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad How to solve an ODE in the form y' = c + k*sin(y)
  • · Replies 1 ·
Replies
1
Views
2K
Graduate How to solve this nonlinear differential equation
  • · Replies 7 ·
Replies
7
Views
3K
MHB What Is the Limit of $t \cos(wt) e^{-st}$ as $t \to \infty$?
  • · Replies 10 ·
Replies
10
Views
3K