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 How Can I Solve This PDE Using Characteristics?

  • climbon
  • · Replies 2 ·
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2

Undergrad How to Stop Integration in ode45 When y<=0 is Reached?

  • oby7842
  • · Replies 1 ·
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1

Graduate Optimization problem using exact Hessian

  • brydustin
  • · Replies 10 ·
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10

Graduate Solve Nonlinear Stiff ODE in Mathematica (NDSolve)

  • Udi
  • · Replies 5 ·
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5

Undergrad How do the d terms in differential equations work?

  • Chrisistaken
  • · Replies 7 ·
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7

Graduate Multi-Variable Second Order Taylor Series Expansion: Ignoring Terms

  • cvanloon
  • · Replies 6 ·
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6

Undergrad Differential operator + linearity proof

  • JamesGoh
  • · Replies 1 ·
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1

Undergrad Book Recommendation - Introductory Differential Equations

  • niehaoma
  • · Replies 6 ·
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6

Undergrad How to solve this equations? Explicit or implicit?

  • hoomanya
  • · Replies 9 ·
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9

Graduate Approximating Integrals with Deriv & Discont: Help Needed!

  • zhermes
  • · Replies 3 ·
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3

Graduate Fourier Transform and zero wave-vector

  • O_chemist
  • · Replies 2 ·
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2

Graduate Is My Approach to Solving the 3rd Order IVP Correct?

  • newtomath
  • · Replies 4 ·
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4

Graduate Unit problem in differential equation

  • sunipa.som
  • · Replies 3 ·
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3

Undergrad Nonhomogeneous Power Series Solution

  • Sculptured
  • · Replies 5 ·
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5

Graduate Inverse of Interpolating Function?

  • gonzorascal
  • · Replies 1 ·
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1

Graduate How are equations used to derive the final solution in this image?

  • exidez
  • · Replies 12 ·
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12

Undergrad Solving Characteristic Equation: y'''-y''+y'-y=0

  • newtomath
  • · Replies 5 ·
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5

Graduate Help with Undergraduate Math, Algebra & PDE Implicit Scheming

  • kriss2
  • · Replies 3 ·
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3

Graduate Change of variable for leibniz notation

  • progenitor
  • · Replies 1 ·
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1

Graduate Stuck on inverse fourier transform pair

  • DragonPetter
  • · Replies 3 ·
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3

Graduate Problem with finding an Inverse Laplace Transform

  • pebblesofsand
  • · Replies 2 ·
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2

Undergrad Help on Mixing solution from two tanks problem

  • romario2223
  • · Replies 2 ·
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2

Undergrad Examples of system of linear differential equations with periodic coefficients

  • princy
  • · Replies 1 ·
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1

Undergrad How to Solve a Diff. Eq. with Proportional Change?

  • DeG
  • · Replies 6 ·
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6

Undergrad How to Visualize Differential Equations?

  • cowmoo32
  • · Replies 8 ·
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8

Graduate Is There an Analytic Solution for This Non-Homogeneous Differential Equation?

  • nrhoades
  • · Replies 7 ·
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7

Graduate Analysis of spatial discretization of a PDE

  • zhidayat
  • · Replies 12 ·
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12

Graduate Why is my particular solution not matching with the book's answer?

  • newtomath
  • · Replies 3 ·
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3

Graduate Non-homogenous ODE, non-homogenous boundaries

  • nrhoades
  • · Replies 10 ·
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10

Graduate What is the Role of Weight Functions in Solving Differential Equations?

  • id the sloth
  • · Replies 2 ·
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2

Graduate Odd Differencing Method for Solving DE

  • Kreizhn
  • · Replies 4 ·
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4

Graduate Pointers for the solution of 2nd order DE with variable coefficient

  • crawf_777
  • · Replies 6 ·
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6

Graduate How can I learn special functions and differential equation

  • Karmerlo
  • · Replies 1 ·
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1

Graduate What Are the Differences Between Various Fourier Transformations?

  • EngWiPy
  • · Replies 10 ·
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10

Graduate Is the Power Tower Method the Key to Solving Nonlinear ODEs?

  • TylerH
  • · Replies 8 ·
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8

Graduate Numerical FDM - wave equation - boundary conditions question

  • irycio
  • · Replies 1 ·
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1

Graduate Exponential Solution of Cubic Equation

  • adnan jahan
  • · Replies 2 ·
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2

Graduate How to prove: Uniqueness of solution to first order autonomous ODE

  • Jösus
  • · Replies 2 ·
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2

Graduate Differential equation in Annulus

  • FedEx
  • · Replies 1 ·
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1

Graduate Can Nonlinear Simultaneous Equations Be Solved?

  • natski
  • · Replies 4 ·
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4

Graduate Non linear 2nd order ode not able to solve

  • varen90
  • · Replies 2 ·
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2

Graduate Can You Help Me Solve a 1D Diffusion Equation with a FTCS Scheme?

  • Juliousceasor
  • · Replies 5 ·
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5

Graduate Solving Second-Harmonic Generation Phase Mismatch - Exact Solution?

  • andonrangelov
  • · Replies 8 ·
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8

Graduate Notation (v*gradient operator)v in Navier-Stokes

  • TylerH
  • · Replies 3 ·
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3

Graduate Physical interpretation of the Laplace operator

  • ralqs
  • · Replies 4 ·
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4

Graduate How Do You Solve Bessel Function Integrals?

  • jayryu
  • · Replies 4 ·
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4

Graduate Can I use Separation of Variables like this? (3 terms)

  • TylerH
  • · Replies 6 ·
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6

Graduate Bessel's Equation Solution Proof

  • hi_mostafa
  • · Replies 16 ·
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16

Undergrad Newton–Raphson method - Finite difference method

  • Excom
  • · Replies 5 ·
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5

Graduate Can Nonlinear PDEs Be Solved with Newton's Method in n-Dimensional Domains?

  • sunon77
  • · Replies 1 ·
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1

Graduate Exploring Stochastic DiffyQ: How to Get a Probability Distribution for V(t)?

  • shaiguy6
  • · Replies 2 ·
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2

Graduate Trying to get this PDE in terms of 'y'

  • jaketodd
  • · Replies 32 ·
2
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32

Graduate Help with Tank problem- NOT TYPICAL

  • pickpocket293
  • · Replies 9 ·
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9

Graduate Aren't many implicit methods actually explicit?

  • ingenuous
  • · Replies 16 ·
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16

Graduate Solving a First Order Linear ODE System with a Constraint

  • mykat
  • · Replies 11 ·
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11

Graduate Hyperbolic equations: domain of dependence

  • defunc
  • · Replies 1 ·
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1

Graduate Solving rate equations with RK method. Don't understand how.

  • ale_yoman
  • · Replies 1 ·
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1

Graduate How can I use the Greens function method to solve a PDE with the given equation?

  • hunt_mat
  • · Replies 1 ·
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1

Graduate Does this differential equation have a nice solution?

  • zachzach
  • · Replies 1 ·
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1

Undergrad Why are they called differentiate & integrate ?

  • physixer
  • · Replies 3 ·
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3

Undergrad Solving ODE via Separation Method: Need Assistance

  • Mugged
  • · Replies 3 ·
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3

Undergrad Function with point of resistance

  • rhenretta
  • · Replies 1 ·
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1

Undergrad Integrating Factor and absolute value

  • awelex
  • · Replies 2 ·
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2

Undergrad Solving Systems of Linear Differential Equations

  • shelovesmath
  • · Replies 2 ·
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2

Graduate Setting up Fick's Law with Internal heating

  • jonthebaptist
  • · Replies 6 ·
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6

Undergrad Computational mathematics materials

  • atrus_ovis
  • · Replies 1 ·
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1

Undergrad Dy/dx: Understanding the Entity vs. Fraction Debate in Differential Equations

  • DeathKnight
  • · Replies 9 ·
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9

Graduate Can someone explain this step in the proof of the convolution theorem?

  • codiloo
  • · Replies 1 ·
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1

Graduate What is the best numerical method for

  • hunt_mat
  • · Replies 2 ·
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2

Graduate Possible Solution for a Moving Cylinder of Charge Injected into a Fluid

  • hunt_mat
  • · Replies 4 ·
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4

Graduate Steady state model for a pressurized vessle

  • meccard
  • · Replies 1 ·
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1

Undergrad Understanding Stencils in Finite Difference Methods

  • alecrimi
  • · Replies 1 ·
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1

Graduate Finite Difference method to solve PDEs

  • iamkratos
  • · Replies 1 ·
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1

Graduate Integral equation with endpoint singularity

  • rplcs
  • · Replies 2 ·
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2

Graduate System of ODE for functions with different origins

  • FrankST
  • · Replies 1 ·
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1

Graduate Why Does A Equal the Reciprocal of the Modulus in This Complex ODE Solution?

  • gdbb
  • · Replies 6 ·
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6

Graduate Can a single-DOF system with non-linear damping be solved analytically?

  • actionman26
  • · Replies 2 ·
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2

Undergrad Method of Undetermined Coefficients

  • belal.rawi
  • · Replies 2 ·
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2

Graduate How Can I Determine the Equivalent Transfer Function of Two Active LTI Systems?

  • umarkhan
  • · Replies 3 ·
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3

Graduate Can Runge-Kutta be used for problems with more than 2 independent variables?

  • hoomanya
  • · Replies 1 ·
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1

Graduate General Solution of the first order differential equation

  • Yr11Kid
  • · Replies 4 ·
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4

Graduate Cauchy vs. Dirichelt/Neumann Condition for PDE

  • ginarific
  • · Replies 1 ·
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1

Graduate Polar Form Confusion: Understand Damped & Driven Wave Amplitude

  • m1ke_
  • · Replies 1 ·
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1

Graduate A Question about Non Linear Differential Equation

  • yicong2011
  • · Replies 3 ·
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3

Graduate How to Sketch a Phaseline for Differential Equations?

  • SSJVegetto
  • · Replies 1 ·
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1

Graduate Integral vs differential curl theorem implicit condition

  • superg33k
  • · Replies 2 ·
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2

Graduate Does a Solution Exist for a Discontinuous Differential Equation?

  • yifli
  • · Replies 1 ·
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1

Undergrad Anyone can describe how euler's method works?

  • ddcamp
  • · Replies 2 ·
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2

Graduate Euler lagrangian equation associated with the variation of a given functional

  • Raha
  • · Replies 1 ·
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1

Graduate General Solution of the first order differential equation

  • Yr11Kid
  • · Replies 1 ·
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1

Graduate How Does the Lemma Support the Uniqueness Theorem in ODEs?

  • yifli
  • · Replies 3 ·
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3

Undergrad General Solution of the first order differential equation

  • Yr11Kid
  • · Replies 5 ·
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5

Graduate Coupled system of 1st order PDEs

  • hunt_mat
  • · Replies 0 ·
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0

Graduate Does a Solution's Interval Limit Its Usefulness Outside That Range?

  • thegreenlaser
  • · Replies 3 ·
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3

Graduate Finding partial derivative with 4 unknowns in 4 equations

  • Monsterman222
  • · Replies 7 ·
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7

Undergrad 2nd order ODE with Sin function.

  • rizvi71
  • · Replies 8 ·
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8

Graduate Possible analytical solution of transcendental equation by an assumption.

  • Azorspace
  • · Replies 1 ·
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1

Graduate Solving a Re-arranging Problem: Making r the Subject

  • lostidentity
  • · Replies 3 ·
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3

Undergrad Finding the points on an ellipse where the slope of the tangent line equals 1

  • delriofi
  • · Replies 3 ·
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3

Graduate How can a vector field with circular components have a zero curl?

  • superg33k
  • · Replies 1 ·
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1