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 First order linear PDE-the idea of characteristic curves

  • kingwinner
  • · Replies 3 ·
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3

Undergrad Different type of differential question most ppl used to

  • squirby
  • · Replies 1 ·
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1

Undergrad Integrals of Trigonometric Functions

  • recon_ind
  • · Replies 1 ·
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1

Graduate 3D wave equation - spherically symmetric transformations

  • Vidatu
  • · Replies 3 ·
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3

Undergrad Solving Hyperbolic Equations Using Exponential Definitions

  • 2^Oscar
  • · Replies 1 ·
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1

Undergrad Separable First Order Differential Equations: Solving y'=x√y

  • dragonblood
  • · Replies 3 ·
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3

Undergrad Finding the Constant k in an Exponential Function with Limited Information

  • dragonblood
  • · Replies 2 ·
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2

Graduate Nonhomogeneous PDE with non-constant coefficients

  • kingwinner
  • · Replies 2 ·
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2

Graduate Techniques for solving various differential equations

  • JD88
  • · Replies 1 ·
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1

Undergrad Help with 3rd Order DE (r^3)*r''' - kr' = 0

  • osnarf
  • · Replies 2 ·
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2

Graduate Greens Functions, PDEs and Laplace Transforms

  • John Creighto
  • · Replies 1 ·
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1

Graduate PDE 2Ux + 3Uy + U = 0 with change of variables V(x,y)=ln[U(x,y)]

  • kingwinner
  • · Replies 4 ·
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4

Undergrad What is the doubling time for bacteria growth in an exponential model?

  • KevinL
  • · Replies 2 ·
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2

Undergrad Existence-Uniqueness problems.

  • hermtm2
  • · Replies 5 ·
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5

Graduate How Can the Variational Iteration Method Solve This Differential Equation?

  • dekarman
  • · Replies 3 ·
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3

Graduate Hadamard and well-posed problems.

  • Kizaru
  • · Replies 2 ·
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2

Graduate Materials on modelling phenomena with ODE/PDE

  • Excoriate
  • · Replies 4 ·
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4

Graduate NDSolve Mathematica: Solve Diff. Eq. Using Solutions of Another

  • zeebo17
  • · Replies 2 ·
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2

Undergrad How can differential equations be used to maximize profit?

  • ojsimon
  • · Replies 5 ·
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5

Undergrad General Question about 2nd ODE's

  • string_656
  • · Replies 1 ·
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1

Undergrad Can You Help Me Solve This Linear Initial-Value Question?

  • string_656
  • · Replies 7 ·
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7

Graduate What is the solution to a 3rd order nonlinear ODE?

  • Max0526
  • · Replies 4 ·
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4

Graduate Nonlinear ODE by an infinite series expansion

  • javicg
  • · Replies 6 ·
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6

Graduate Regards, Solution to PDE system by Maple 13

  • tsetty2000
  • · Replies 1 ·
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1

Graduate Heat kernel (PDE) asymptotic expansion

  • zetafunction
  • · Replies 1 ·
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1

Graduate Do Equations of the Form P(x,y)dx+Q(x,y)dy=0 Always Have an Integrating Factor?

  • kof9595995
  • · Replies 3 ·
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3

Undergrad When Are Partial Derivatives Continuous?

  • omri3012
  • · Replies 2 ·
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2

Graduate Inverse Laplace Transform (Proof?)

  • John Creighto
  • · Replies 1 ·
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1

Undergrad Derivative with respect to a variable

  • ahjukhir
  • · Replies 1 ·
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1

Graduate What is the Role of the Hankel Norm in Laplace Transform Convergence?

  • John Creighto
  • · Replies 4 ·
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4

High School Solving a Difficult Equation After 20 Years: Tips and Tricks for Success

  • jrbigfish
  • · Replies 14 ·
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14

Undergrad How Do You Perform Laplace Transforms on Specific Functions?

  • moisesbr
  • · Replies 1 ·
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1

Graduate Temperature hollow sphere - Temperature varying inside

  • KingBongo
  • · Replies 7 ·
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7

Undergrad Differential equation from the block diagram

  • moisesbr
  • · Replies 1 ·
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1

Graduate Systems of Nonlinear Differential Equations

  • Aline Rocha
  • · Replies 3 ·
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3

Undergrad Why derive Regular Singular Points?

  • freydawg56
  • · Replies 1 ·
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1

Graduate Opinion on Solving the ODE y''=f(y): A Detailed Explanation

  • Zaphys
  • · Replies 12 ·
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12

Graduate Laplace Transform (Numeric Computation?)

  • John Creighto
  • · Replies 1 ·
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1

Undergrad Solving Separating Variables Differential Equations

  • KevinL
  • · Replies 4 ·
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4

Graduate Series solution to 2nd order differential equation

  • drsmoothe2004
  • · Replies 1 ·
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1

Graduate Differential equation y'' + 2y' + y = 2t^2 - 1

  • 6021023
  • · Replies 3 ·
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3

Undergrad Linear and non linear differential

  • killerfish
  • · Replies 6 ·
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6

Graduate Need help solving pseudo-hypergeometric ODE

  • pbecker314
  • · Replies 2 ·
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2

Graduate How are Parabolic PDEs Solved in Curved Spaces?

  • gvk
  • · Replies 1 ·
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1

Graduate How Can Advanced ODE Classes Address Equilibrium Points and Coordinate Changes?

  • kitsch_22
  • · Replies 1 ·
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1

Undergrad Laplace transforms of Heavyside functions

  • logistics86
  • · Replies 4 ·
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4

Graduate What is the purpose of PDE research/study

  • mordechai9
  • · Replies 6 ·
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6

Undergrad Partial Fraction Expansion with repeated & complex roots

  • CremeBrulee
  • · Replies 4 ·
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4

Undergrad Partial Fraction Expansion with repeated roots

  • jhmz
  • · Replies 6 ·
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6

Graduate Proving Existence of PDE Solution on H^(-1)(Ω)

  • Feynman
  • · Replies 1 ·
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1

Graduate Singularities & Limit Cycles of C1 Vector Fields on S2

  • johnson123
  • · Replies 3 ·
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3

Graduate Name for DE given by law of gravitation

  • Tac-Tics
  • · Replies 2 ·
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2

Graduate Differential Equation with Vectors

  • nburo
  • · Replies 6 ·
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6

Undergrad Prep for PDEs: Math Staple Requirements

  • l'Hôpital
  • · Replies 5 ·
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5

Graduate Diffusion equation, semi-infinite solution

  • geetar_king
  • · Replies 17 ·
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17

Graduate Solving Diffusion Problem with Crank Nicholson Method

  • cl19726
  • · Replies 1 ·
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1

Graduate Non-linear second order equation

  • Leo Klem
  • · Replies 3 ·
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3

Graduate 2nd Order ODE,Homogeneous,Non-Constant Coeff.

  • tim85ruhruniv
  • · Replies 1 ·
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1

Graduate Solving a linear homogenous 2nd order DE with a constant term

  • bitrex
  • · Replies 1 ·
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1

Graduate Who can find the solution to this ODE?

  • Cody Palmer
  • · Replies 3 ·
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3

Graduate Can this equation be solved with the method of undetermined coefficiants?

  • horefaen
  • · Replies 7 ·
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7

Graduate How to Compute Inverse Fourier Transform for a Specific Function

  • mathy_girl
  • · Replies 5 ·
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5

Graduate Hadamard Regularization in Hypersingular BIE?

  • PerennialII
  • · Replies 1 ·
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1

Graduate Unsolved Mysteries: The Navier-Stokes Equations and the Million Dollar Prize

  • avocadogirl
  • · Replies 1 ·
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1

Graduate Need help understanding linear equations of higher order

  • bitrex
  • · Replies 5 ·
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5

Undergrad Does dx does not make change in front of the integral?

  • Дьявол
  • · Replies 11 ·
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11

Undergrad Keplers Law of Planetary Motion?

  • fzshinobi
  • · Replies 7 ·
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7

Undergrad Why Do Physicists Multiply by dx When Solving ODEs?

  • flatmaster
  • · Replies 25 ·
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25

Graduate Physical significance of the laplacian operator?

  • Tac-Tics
  • · Replies 16 ·
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16

Graduate How Do You Solve Autonomous Second Order ODEs Like y'' = f(y)?

  • muzialis
  • · Replies 1 ·
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1

Graduate Geometry of phase space and extended phase space

  • Coto
  • · Replies 1 ·
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1

Graduate How Can I Determine the Bounding Dimensions of a Nonlinear Dynamical System?

  • coolnessitself
  • · Replies 1 ·
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1

Graduate Solving Bernouli Equation with x $\frac{dy}{dx}+y=\frac{1}{y^2}$

  • n1person
  • · Replies 2 ·
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2

Graduate Second Order Numerical Integration w/ Neumann Boundary Conditions

  • a2009
  • · Replies 1 ·
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1

Graduate Green's function approach using Lebesgue integration

  • bdforbes
  • · Replies 59 ·
2
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59

Undergrad Is My Laplace Transform Solution Correct?

  • CentreShifter
  • · Replies 3 ·
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3

Graduate Solving the Bessel Equation with Initial Conditions and Bessel Functions

  • makasx
  • · Replies 4 ·
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4

Graduate Deriving Wave Equation by Vector Approach

  • danong
  • · Replies 3 ·
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3

Graduate Heat Equation B.Cs: Solve & Determine Coefficients

  • muzialis
  • · Replies 7 ·
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7

Graduate Describing the form of a second-order D.E.

  • joriarty
  • · Replies 1 ·
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1

Graduate [Numerical] System of first order ordinary diff equations with given asymptotic

  • ala
  • · Replies 2 ·
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2

Graduate Method of Variation of Parameters

  • Augmented
  • · Replies 4 ·
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4

Graduate Solving Second Order Linear ODE with Parabolic Cylinder Functions

  • mathy_girl
  • · Replies 13 ·
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13

Graduate Stuck on a complex ODE (conjugate issues )

  • Simplexed
  • · Replies 3 ·
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3

High School What is the effect of f(x-ct) on the function f(x)=3?

  • coverband
  • · Replies 6 ·
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6

Graduate Solving Three-term Integral with Constants

  • Proteoglycan
  • · Replies 4 ·
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4

Undergrad Integrating Factors Found by Inspection

  • heykyou
  • · Replies 4 ·
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4

Graduate How would one solve the equation f '(-2x) + g '(4x) = - x?

  • coverband
  • · Replies 3 ·
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3

Graduate Fixed Points of ODE: Clarifying Conditions

  • Apteronotus
  • · Replies 3 ·
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3

Graduate Approximating Non Linear Systems by Using The Matrix Eponential

  • John Creighto
  • · Replies 2 ·
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2

Undergrad How to Differentiate { sin 3xcos4x dx: Integration Question

  • Sanosuke Sagara
  • · Replies 3 ·
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3

Graduate Solving Diff. Eq: p & dp/dx Conditions, Mesh Creation

  • Mad_MechE
  • · Replies 4 ·
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4

Undergrad Are there multiple valid solutions for the given initial value problem?

  • footballxpaul
  • · Replies 5 ·
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5

Undergrad Neumann vs Dirichlet Boundary Conditions

  • mherna48
  • · Replies 2 ·
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2

Undergrad Sky Diver Free Fall: Speed, Distance, Limiting Velocity & Time Calculation

  • footballxpaul
  • · Replies 2 ·
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2

Graduate 1D wave equation - bizarre problem

  • smolloy
  • · Replies 2 ·
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2

Undergrad Substitution to make it seperable

  • Augmented
  • · Replies 2 ·
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2

Graduate Solving second order PDE by separation of variables (getting 2 ODE's)

  • mathy_girl
  • · Replies 18 ·
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18

Undergrad Where Did I Go Wrong With Undetermined Coefficients for y+y'+4y = 2sinh(T)?

  • SoulofLoneWlf
  • · Replies 4 ·
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4

Graduate Laplace and Fourier Transforms: When to Use Which?

  • Niles
  • · Replies 9 ·
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9