Differential Equations Forum

Join in expert discussion on differential equation topics like ODE and PDE. Differential equations are an equation involving derivatives of a function or functions.

Threads

Graduate System of nonlinear integral equations

  • jannyhuggy
  • · Replies 1 ·
Replies
1

Integral Notation of an exponential Brownian motion

  • gnob
  • · Replies 1 ·
Replies
1

Undergrad What guess should I use when the right hand side is a constant?

  • CraigH
  • · Replies 2 ·
Replies
2

Undergrad Is it possible to get an explicit solution for this?

  • pondering
  • · Replies 4 ·
Replies
4

Graduate Use finite difference method to solve for eigenvalue E

  • EigenCake
  • · Replies 10 ·
Replies
10

Graduate Where is the Geometry Defined in the EBT and Timoshenko PDE's

  • bugatti79
  • · Replies 3 ·
Replies
3

Graduate Natural Vibration of Beam - Algebraic Query

  • bugatti79
  • · Replies 8 ·
Replies
8

Graduate Solving ODE's or Euler second order diff. eq's containing Asecx?

  • hivesaeed4
  • · Replies 1 ·
Replies
1

Undergrad How Does Damping Affect the Energy of an Oscillator?

  • Paddyod1509
  • · Replies 3 ·
Replies
3

Graduate Solving by finite difference method

  • a_hoseni110
  • · Replies 1 ·
Replies
1

Undergrad Laplace Transform of the product of two functions

  • member 392791
  • · Replies 8 ·
Replies
8
Replies
3

Graduate Where Did the Exponentials Go in Beam Vibration Analysis?

  • bugatti79
  • · Replies 5 ·
Replies
5

Graduate Normalizing the PDE to make BC's homogeous

  • bugatti79
  • · Replies 6 ·
Replies
6

Solving an IVP: Finding Euler Approximations & Errors

  • alane1994
  • · Replies 9 ·
Replies
9

Graduate Solving the PDE Wave Equation - A_n & B_n Terms

  • PhysicsGente
  • · Replies 2 ·
Replies
2

Derivation of Equation (11) from R Boundary Condition

  • Dustinsfl
  • · Replies 1 ·
Replies
1

Circular Membrane: Solving $u_{tt} = c^2\nabla^2u$ with Bessel's Equation

  • Dustinsfl
  • · Replies 9 ·
Replies
9

Graduate Lyapunov Function: Show 0 is Stable

  • rjcarril
  • · Replies 2 ·
Replies
2

Undergrad What happens when you vary sigma in the s-plane?

  • gtr32x
  • · Replies 1 ·
Replies
1

Graduate Variation of parameters applied to an ODE

  • fluidistic
  • · Replies 2 ·
Replies
2

How Can the Frobenius Method Be Used to Solve Complex ODEs?

  • Usagi
  • · Replies 7 ·
Replies
7

Undergrad Is Riemann Zeta function related to differential equations?

  • stgermaine
  • · Replies 4 ·
Replies
4

Undergrad Differential Equation system and matrix

  • Tala.S
  • · Replies 3 ·
Replies
3

Graduate Solving system of 2nd order coupled ODEs

  • guest1234
  • · Replies 11 ·
Replies
11

Graduate Behavior of besselfunction for index

  • Fabrice23
  • · Replies 6 ·
Replies
6

Undergrad Solve for L: Unknown Exponential Function & Plain Side

  • lookingforhlp
  • · Replies 1 ·
Replies
1

Graduate Solving Fourth Order PDE with Boundary Conditions

  • fluidistic
  • · Replies 14 ·
Replies
14

Graduate Qns on euler-lagrangian equation

  • almo
  • · Replies 1 ·
Replies
1

Graduate Runge-kutta method for a force acting upon a charged particle

  • superstrings
  • · Replies 2 ·
Replies
2

Graduate How Do You Solve a Time-Dependent Rate Equation?

  • CentreShifter
  • · Replies 3 ·
Replies
3

Graduate Solving 2nd order differential equation with non-constant coefficients

  • paul143
  • · Replies 15 ·
Replies
15

Graduate Solving Unstable ODE: Theory, Stability & Continuity

  • muzialis
  • · Replies 1 ·
Replies
1

Graduate Stability of an ODE and Euler's method

  • Master J
  • · Replies 3 ·
Replies
3

Graduate Solving a linear 2. order non-homogeneous differential equation

  • Chem.Stud.
  • · Replies 3 ·
Replies
3

Graduate Need quick help with Series, it will only take a few seconds

  • twisted079
  • · Replies 2 ·
Replies
2

Graduate Why Is the Fourier Sine Series Not Defined at Discontinuous Points?

  • zorro
  • · Replies 1 ·
Replies
1

Graduate Boundary value problem - constrained paramter

  • Deadstar
  • · Replies 2 ·
Replies
2

Finding Critical Points of a Dynamical System.

  • the_doors
  • · Replies 6 ·
Replies
6

Graduate What is a Minimal Model in Chaos Theory?

  • marellasunny
  • · Replies 1 ·
Replies
1

Graduate Cauchy Problem in Convex Neighborhood

  • PLuz
  • · Replies 1 ·
Replies
1

Graduate Partial derivatives after a transformation

  • MarkovMarakov
  • · Replies 3 ·
Replies
3

Undergrad Differential equation y(x)''=f(y(x))

  • Holali
  • · Replies 8 ·
Replies
8

Graduate Ordinary Differential Equations

  • Astronuc
  • · Replies 9 ·
Replies
9

Graduate Conceptual Second order differential eqn question

  • CAF123
  • · Replies 3 ·
Replies
3

Undergrad Linear equations - use of integrating factor

  • nufc365
  • · Replies 1 ·
Replies
1

Bifurcations of dynamical systems

  • Dustinsfl
  • · Replies 2 ·
Replies
2

Graduate How Do You Integrate x^3 J_0(ax) Over 0 to R?

  • mikel
  • · Replies 14 ·
Replies
14

Undergrad How is the Sine Term Transformed in the Harmonic Motion Equation?

  • danielu13
  • · Replies 6 ·
Replies
6

Differential equations: Homogeneous Linear Equations

  • mysolutionshrc
  • · Replies 1 ·
Replies
1

Graduate Unilateral and Bilateral Laplace Transform in Solving Differential Equations

  • ha9981
  • · Replies 1 ·
Replies
1

Graduate Finding Complex Roots of Implicit Hyperbolic Equations

  • ekkilop
  • · Replies 7 ·
Replies
7

Graduate 4th order differential equation

  • chuy52506
  • · Replies 8 ·
Replies
8

Using the annihilator method to solve an ODE

  • MarkFL
  • · Replies 5 ·
Replies
5

Graduate Help with solution of legendre's diffrential equation.

  • A Dhingra
  • · Replies 2 ·
Replies
2

Graduate Solve by using variation of parameters

  • SOS2012
  • · Replies 2 ·
Replies
2

Graduate Small approximation of the Derivative of the Bessel function

  • KyleS4562
  • · Replies 2 ·
Replies
2

Graduate Solutions to 2 similar ODE's. Why does they differ that much?

  • fluidistic
  • · Replies 2 ·
Replies
2

Undergrad Some trigonometric, exponential thing?

  • M. next
  • · Replies 6 ·
Replies
6

Graduate Solve Eq: y''(x)+(2/x)y'(x)+(w^2)y(x)=0

  • mumaga
  • · Replies 2 ·
Replies
2

Graduate Inverse Laplace Transformation of arctan (s/2)

  • nileszoso
  • · Replies 3 ·
Replies
3

Graduate Solving Non-Homogeneous DEs: Finding the Annihilator for Particular Solutions

  • member 392791
  • · Replies 12 ·
Replies
12

Graduate Differential equation resembling to cycloid

  • tom-73
  • · Replies 3 ·
Replies
3

Graduate Euler Bernoulli Beam 4th order ODE -Balance of Units

  • bugatti79
  • · Replies 3 ·
Replies
3

Graduate Sugestions to solve this equation

  • pedro_ani
  • · Replies 7 ·
Replies
7

Graduate Method of Characteristics/Fan of characteristics

  • Leb
  • · Replies 4 ·
Replies
4

Undergrad How can I solve this without using integrating factor?

  • ktklam9
  • · Replies 1 ·
Replies
1

Solution of the Damped Wave Equation under Certain Boundary Conditions

  • Dustinsfl
  • · Replies 16 ·
Replies
16

Graduate Differential Equation with growth

  • DM1984
  • · Replies 2 ·
Replies
2

Undergrad Linear homogenous ODEs with constant coefficients

  • d.arbitman
  • · Replies 2 ·
Replies
2

What Is the Guessed Form Using the Method of Undetermined Coefficients?

  • Dustinsfl
  • · Replies 2 ·
Replies
2

Graduate Differential operators in arbitrary coordinate systems?

  • lordkelvin
  • · Replies 1 ·
Replies
1

Graduate Convection diffusion equation 1D exact solution

  • phunnyish
  • · Replies 1 ·
Replies
1

Graduate How to set up Neumann boundary condition for a PDE in a coordinate-invariant form?

  • eugvas
  • · Replies 1 ·
Replies
1

Graduate Local Existence and Global Existence of differential equations

  • machi
  • · Replies 4 ·
Replies
4
Replies
2

Graduate What is the general solution to Cauchy-Euler's equation?

  • fluidistic
  • · Replies 2 ·
Replies
2

Are Equal: $$\sin \alpha_nx - \sinh \alpha_nx$$

  • Dustinsfl
  • · Replies 1 ·
Replies
1

How to Combine Sturm-Liouville Equations for 4th Derivative?

  • Dustinsfl
  • · Replies 2 ·
Replies
2

Graduate 'Theta function' setting conditions similar to delta function?

  • Mithra
  • · Replies 2 ·
Replies
2

Graduate How Do You Numerically Solve Coupled PDEs with Continuity Constraints?

  • keyns
  • · Replies 2 ·
Replies
2

Graduate Is every one playing a joke on me? PDE solution question

  • knockout_artist
  • · Replies 7 ·
Replies
7

Graduate Derivative of a Convolution: Solving an ODE with an Integral Solution

  • Shaybay92
  • · Replies 4 ·
Replies
4

Graduate Determining wheter or not a non trivial solutions exists for higher order PDE's

  • roldy
  • · Replies 2 ·
Replies
2

Undergrad Solve Gompertz Model for Population Growth with Help | TIA

  • rroy81
  • · Replies 3 ·
Replies
3

Undergrad Covert differential equation into a system of 1st order ODE?

  • nufeng
  • · Replies 5 ·
Replies
5

Graduate How to covert this differential equation into a system of one order ODE?

  • nufeng
  • · Replies 1 ·
Replies
1

Graduate Obtaining the Green Function for Euler Beam with Specific Boundary Conditions

  • muzialis
  • · Replies 4 ·
Replies
4

Solve Second Order Differential Eq. With Variable Coefficient

  • Amer
  • · Replies 13 ·
Replies
13

Graduate Solve differential equation with boundary conditions using substitution

  • cheesecake91
  • · Replies 2 ·
Replies
2

Graduate Solving Non-Linear Differential Equation with Fourier Transforms

  • Gengar
  • · Replies 1 ·
Replies
1

Wave equation soln check and plot question

  • Dustinsfl
  • · Replies 11 ·
Replies
11

Graduate Bad method for finding potential function for exact ODE

  • dumbQuestion
  • · Replies 1 ·
Replies
1

Graduate Removing a Singularity for a Second Order ODE

  • DrChops
  • · Replies 5 ·
Replies
5

Graduate On the domain of the function that undergoes the Hilbert transform

  • elgen
  • · Replies 2 ·
Replies
2

Another second order non homogeneous ODE....

  • chisigma
  • · Replies 3 ·
Replies
3

Frequency Spectrum of a Vibrating String

  • Dustinsfl
  • · Replies 8 ·
Replies
8

Undergrad Higher order DE to State space

  • anirudh_s
  • · Replies 1 ·
Replies
1

High School I know nothing about differential equations

  • mather
  • · Replies 33 ·
2
Replies
33

Approximating Solutions with Coefficients of $Y^m_\ell$

  • Dustinsfl
  • · Replies 5 ·
Replies
5