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 What Are the Physical Implications of Transformations in the KdV Equation?

  • hanson
  • · Replies 2 ·
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Graduate Question about a partial differential equation

  • feng
  • · Replies 4 ·
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4

Graduate Using fourier and laplace transform to solve PDE

  • cyw1984
  • · Replies 3 ·
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3

Undergrad What is the "Engine of Calculus" in Differential Equations?

  • Substance D
  • · Replies 10 ·
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10

Graduate How to Solve Inverse Fourier Transform of (10*sin(3*omega)) / (omega+Pi)?

  • bangell
  • · Replies 4 ·
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4

Graduate Power Series Solution of y''+(x^2)y=0: Is it Possible?

  • sigma128
  • · Replies 14 ·
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14

Graduate Eigenvectors, eigenvalues and matrices

  • EugP
  • · Replies 4 ·
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4

Graduate What Is Dimensional Regularization in Arbitrary Dimensions?

  • ice109
  • · Replies 3 ·
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3

Undergrad Solution of First Order DE using Integrating Factors

  • maverick280857
  • · Replies 4 ·
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4

Graduate Solution to a differential equation required

  • baldrick
  • · Replies 2 ·
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2

Graduate How Do Pseudo Differential Operators Solve Infinite-Dimensional ODEs?

  • Klaus_Hoffmann
  • · Replies 1 ·
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1

Undergrad Please recommend books on numerical approach to NLS

  • hanson
  • · Replies 2 ·
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2

Graduate Two tanks connected by a horizontal pipe

  • sigma128
  • · Replies 1 ·
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1

Help Solve a Puzzle: Read Figure Below

  • hanson
  • · Replies 2 ·
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2

Graduate Is There a Better Name for the Anti-Limit Problem?

  • bernhard.rothenstein
  • · Replies 4 ·
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4

Undergrad How Do You Simplify This Partial Fraction Equation?

  • snowJT
  • · Replies 17 ·
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17

Undergrad Inverse laplace transform question

  • cabellos
  • · Replies 2 ·
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2

Graduate Inverse Laplace Transform of 5/(s+1)exp(-2s): Solution & Explanation

  • daf1
  • · Replies 1 ·
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1

Graduate Can a self adjoint operator have a continous spectrum ?

  • Klaus_Hoffmann
  • · Replies 2 ·
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2

Undergrad What is the time to reach 98% of terminal velocity?

  • rockytriton
  • · Replies 3 ·
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3

Graduate Solving Coupled ODEs with Boundary Conditions

  • Madz
  • · Replies 5 ·
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5

Graduate How did Einstein derive the Lorentz transformations in his 1905 paper?

  • cincirob
  • · Replies 14 ·
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14

Graduate Partial Differential Equations

  • Astronuc
  • · Replies 15 ·
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15

Graduate Evolution of pressure in navier stokes

  • jostpuur
  • · Replies 4 ·
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4

Undergrad Best Differential Equations Textbooks for Undergraduates

  • albema
  • · Replies 2 ·
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2

Graduate Can all differential equations be derived from a variational principle?

  • lalbatros
  • · Replies 16 ·
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16

Undergrad Where ı can find problems about first order diff. equations

  • oahsen
  • · Replies 1 ·
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1

Graduate How Can You Solve the Helmholtz Differential Equation?

  • Sparky_
  • · Replies 5 ·
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5

Graduate Non linear differential equation

  • Terilien
  • · Replies 4 ·
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4

Graduate Is Sami Groupes Theory the Best Method for Solving Parabolic Problems?

  • pivoxa15
  • · Replies 2 ·
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2

Graduate Is the DE y''+ (1/x)y' + (1-1/x^2)y=0 solvable with explicit methods?

  • zoki85
  • · Replies 12 ·
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12

Graduate Transforming a Second-Order PDE into Canonical Form: Tips and Techniques

  • r4nd0m
  • · Replies 1 ·
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1

Graduate Solving an Equation: a"+bxy'+cy*x^2=0

  • ziad1985
  • · Replies 3 ·
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3

Undergrad Solving a Differential Equation for Bungee Jumping Motion

  • OrisAble
  • · Replies 2 ·
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2

Undergrad Which Differential Equations Book is Best for Beginners?

  • anthlei
  • · Replies 4 ·
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4

Graduate Non-linear ODE, blow-up phenomenon

  • JohnDuck
  • · Replies 2 ·
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2

Undergrad How much Can Each Pump Remove in 1 Hour? Equation Solution

  • allenh
  • · Replies 1 ·
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1

Graduate Nonlinear DE depending on two variables

  • KingBongo
  • · Replies 4 ·
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4

Undergrad Who Uses Delay Differential Equations?

  • Meriem
  • · Replies 1 ·
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1

Undergrad Is There a Value of x in [0,1] Such That f(x)=x for a Continuous Function f?

  • jmich79
  • · Replies 1 ·
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1

Graduate Evaluating Stochastic Gradient with Random Grid

  • Heimdall
  • · Replies 1 ·
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1

Graduate What are the criteria for solitary wave to exist?

  • hanson
  • · Replies 2 ·
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2

Undergrad Please look at these streamlines

  • hanson
  • · Replies 1 ·
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1

Graduate Is the Laplace Equation with Initial Conditions Ill-Posed?

  • Unskilled
  • · Replies 3 ·
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3

Graduate Symplectic integrator/hamiltonian

  • nlake27
  • · Replies 3 ·
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3

Graduate Streamline and free surface profile

  • hanson
  • · Replies 2 ·
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2

Graduate Bessel function for a 2D circular plate

  • iamfromspace
  • · Replies 2 ·
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2

Undergrad How Do You Solve Yp for the ODE y'' - 3y' - 10y = exp(x)?

  • final_d3stinati
  • · Replies 6 ·
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6

Graduate How to solve D.E using Laplace transform?

  • mrmivec
  • · Replies 6 ·
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6

Graduate Understanding Smooth Solutions to PDEs

  • waht
  • · Replies 5 ·
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5

Graduate Asymptotic evaluation of Laplace inverse transform

  • tpm
  • · Replies 2 ·
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2

Graduate Solving Diff.Eq. with Boundary Conditions: y(x) = x

  • jt316
  • · Replies 36 ·
2
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Graduate Solving "y''(x) +y(x)=0" w/ BC's of y(1)+y(-1)=0 & y'(1)+y'(-1)=2

  • jt316
  • · Replies 2 ·
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2

Graduate How Do You Solve the Differential Equation kxy = (y+dx)(x+dy)?

  • r16
  • · Replies 1 ·
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1

Undergrad Need opinions on my differential equations book

  • Mathgician
  • · Replies 10 ·
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10

Graduate What is the Differential of a Bezier Curve with Respect to x?

  • Anti-Distinctly
  • · Replies 4 ·
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4

Graduate Do Initial Conditions for PDEs Need to Satisfy Governing Equations?

  • pavanakumar
  • · Replies 2 ·
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2

Graduate The region in physical spce where KdV equation is valid

  • hanson
  • · Replies 1 ·
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1

Graduate Nonlinearity and dispersion in Kdv equation?

  • hanson
  • · Replies 15 ·
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15

Graduate Streamline pattern of a solitary wave?

  • hanson
  • · Replies 1 ·
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1

Undergrad Can D'Alembert's Solution Solve the 1-Dimensional Wave Equation?

  • DanielO_o
  • · Replies 4 ·
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4

Graduate Solving 4th Order Differential Equation: y^(4)-1=5

  • ranger1716
  • · Replies 7 ·
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7

Undergrad Calculate the first four Picard Iterates of the equation y' - y = x^2

  • brit123
  • · Replies 1 ·
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1

Undergrad Solve Differential Equation of Family of Curves and Orthogonal Trajectories

  • brit123
  • · Replies 1 ·
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1

Graduate Solving PDEs Involving Characteristics, Expansion Waves and Shocks

  • pivoxa15
  • · Replies 1 ·
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1

High School Are There Free Online Laplace Transform Calculators?

  • snowJT
  • · Replies 1 ·
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1

Graduate How can one develop intuition for solving PDEs?

  • pivoxa15
  • · Replies 6 ·
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6

Undergrad Finding the limit and a differential equation

  • cokezero
  • · Replies 3 ·
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3

Graduate Discovering the Method of Reduction of Order in ODEs: A Historical Perspective

  • pivoxa15
  • · Replies 4 ·
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4

Undergrad How can you determine isoclines using slope fields?

  • ssb
  • · Replies 1 ·
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1

Graduate Perturbation expansion when solving Kdv equation

  • hanson
  • · Replies 5 ·
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5

Graduate NOn-linear equation, when has a solution?

  • tpm
  • · Replies 1 ·
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1

Graduate Must solitary wave a product of weakly nonlinear and weakly dispersive?

  • hanson
  • · Replies 4 ·
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4

Graduate An example regarding asymptotic expansion

  • hanson
  • · Replies 1 ·
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1

Graduate Cross product in spherical coordinates

  • TheDestroyer
  • · Replies 7 ·
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7

Graduate Solving Differential Equation with Fröbenius Method

  • DevoBoy
  • · Replies 3 ·
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3

Graduate Finding the Solution to a+b*x+x^(-y)+c*x^(-2y)+d*x^(1-2y)=0

  • natski
  • · Replies 9 ·
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9

Undergrad Air resistance (pebble throwing)

  • jojoking
  • · Replies 2 ·
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2

Graduate A Tricky PDE Transformation: Can You Help?

  • hanson
  • · Replies 5 ·
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5

Graduate Second order homogenous with variable coeffecients

  • Terilien
  • · Replies 9 ·
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9

Graduate Inverse Scattering Transform and Solitons

  • hanson
  • · Replies 1 ·
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1

Graduate Is There a Vector Space Defined by Canonical Boundary Conditions?

  • CPL.Luke
  • · Replies 1 ·
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1

Undergrad Is This a Modified Laplace's Equation?

  • jhuleea
  • · Replies 3 ·
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3

Undergrad Learn PDE: Helpful Resources for Beginners

  • pixel01
  • · Replies 2 ·
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2

Graduate Solving a Non-Linear Equation: Need Help!

  • CPL.Luke
  • · Replies 1 ·
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1

Graduate Asymptotic Behaviour of Solution x(t) for dx/dt = x^4 +4(x^3) - 60(x^2)

  • dopey9
  • · Replies 2 ·
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2

Undergrad How Do You Solve Linear Difference Equations with Initial Conditions?

  • cshum00
  • · Replies 5 ·
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5

Undergrad Solving an Equation with Three e-Factors

  • NanakiXIII
  • · Replies 8 ·
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8

High School Differential equation examples

  • darthchocobo
  • · Replies 2 ·
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2

Undergrad Results same w/ Euler, Improved Euler, & Runge-Kutta

  • dimensionless
  • · Replies 14 ·
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14

Undergrad How Do I Prove the Laplace Transform Formula for Functions with Finite Jumps?

  • cabellos
  • · Replies 7 ·
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7

Graduate Question about heat conduction equation.

  • DrKareem
  • · Replies 6 ·
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6

Undergrad Solving Differential Equation (dz/dt) + e^(t+z) = 0 with Arbitrary Constant C

  • cgward
  • · Replies 1 ·
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1

Graduate System of Differential Equations

  • PhDP
  • · Replies 1 ·
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1

Graduate Differential equations and integal transforms

  • Yegor
  • · Replies 3 ·
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3

Undergrad Convultion with Delta Function

  • Caspian
  • · Replies 2 ·
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2

Graduate Calculating Constant C in Abel's Formula for Wronskian

  • Clausius2
  • · Replies 1 ·
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1

Graduate 2nd order differential equation

  • kristiakemi
  • · Replies 7 ·
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7

Graduate What is the simplest way to understand the Dirac Delta function?

  • arildno
  • · Replies 15 ·
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15

Undergrad Differential equation with cross product

  • alsey42147
  • · Replies 7 ·
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7