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Forum: Differential Equations

Ordinary and Partial Differential Equations, Linear and Nonlinear; also Integral and Integro-Differential Equations

  1. Sticky Thread Sticky Threads

  2. Sticky Thread Bessel Functions Cheat Sheet

    Started by Ackbach, September 11th, 2015 10:13
    • Replies: 0
    • Views: 1,868
    September 11th, 2015, 10:13 Go to last post
  3. Sticky Thread Stürm-Liouville Problem Cheat Sheet

    Started by Ackbach, September 4th, 2015 10:10
    • Replies: 0
    • Views: 1,698
    September 4th, 2015, 10:10 Go to last post
  4. Sticky Thread Status of DE Tutorial

    Started by Chris L T521, December 26th, 2012 03:16
    • Replies: 4
    • Views: 2,923
    July 10th, 2013, 04:41 Go to last post
  1. Normal Thread Normal Threads

  2. Show that solution is infinitely many times differentiable

    Started by evinda, June 6th, 2018 11:13
    3 Pages
    1 2 3
    • Replies: 25
    • Views: 435
    Today, 03:50 Go to last post
  3. [SOLVED] 2.2.7 de with trig and y(1)=1

    Started by karush, Yesterday 18:35
    &displaystyle, &_6, textit, x+displaystylefraccsin, y&=1
    • Replies: 2
    • Views: 36
    Yesterday, 21:42 Go to last post
  4. How do we get the solution?

    Started by evinda, June 13th, 2018 17:45
    $u$, $x_0$, solving, xtendcases$$, x_00endcases$$
    • Replies: 2
    • Views: 73
    Yesterday, 16:29 Go to last post
  5. 2.2.6 de with e^x

    Started by karush, June 19th, 2018 19:13
    &displaystyle, e^x, find, solution, textitdivide
    • Replies: 1
    • Views: 41
    June 19th, 2018, 19:21 Go to last post
  6. 2.2.5 de equation with y(1)=1/2

    Started by karush, June 18th, 2018 20:26
    $$displaystyle, $itemtextsfrewrite$, frac2x, solution, ux=expint
    • Replies: 4
    • Views: 91
    June 19th, 2018, 16:30 Go to last post
  7. [SOLVED] 2.2.4 de with xy'

    Started by karush, June 17th, 2018 15:26
    $$y, 2.2.4, dx=e^ln, ux=expintfrac2x, x^2=x^2$$
    • Replies: 1
    • Views: 68
    June 17th, 2018, 16:19 Go to last post
  8. [SOLVED] 2.2.3 de with tan x

    Started by karush, June 16th, 2018 19:26
    • Replies: 8
    • Views: 113
    June 17th, 2018, 12:39 Go to last post
  9. [SOLVED] 2.2.1 de with u substitution

    Started by karush, June 15th, 2018 15:40
    $$ux, $u=1/y$, 2.2.1, fraccx+fracsin, xx-cos
    • Replies: 3
    • Views: 63
    June 15th, 2018, 16:28 Go to last post
  10. 2.1.9 de with reciprocal

    Started by karush, June 15th, 2018 02:27
    2.1.9, denominator, multiply, sides, step
    • Replies: 4
    • Views: 73
    June 15th, 2018, 14:14 Go to last post
  11. Initial and boundary value problem

    Started by evinda, June 13th, 2018 10:41
    boundary, cosbeta, initial, rightarrow, xx=0
    • Replies: 1
    • Views: 50
    June 13th, 2018, 16:06 Go to last post
  12. 2.1.{8} de with trig y(pi)=0

    Started by karush, June 11th, 2018 17:18
    2.1.8, intdfracsinpipi, left[-dfraccospipi, right]=0, xx^2
    • Replies: 4
    • Views: 78
    June 11th, 2018, 22:06 Go to last post
    • Replies: 1
    • Views: 50
    June 11th, 2018, 15:20 Go to last post
  13. [SOLVED] 2.1.1 }Solve the given differential equation

    Started by karush, June 5th, 2018 21:45
    2 Pages
    1 2
    $ce^-3x$, 2.1.1, answer, derived, differential
    • Replies: 10
    • Views: 165
    June 11th, 2018, 01:21 Go to last post
  14. [SOLVED] Boundary value problem for Laplace equation

    Started by evinda, June 8th, 2018 11:40
    2 Pages
    1 2
    boundary, conditions, dirichlet, problem, rectangle
    • Replies: 16
    • Views: 227
    June 10th, 2018, 15:00 Go to last post
  15. [SOLVED] 2.1.6 de with IVP

    Started by karush, June 10th, 2018 00:48
    $$displaystyle, 2.1.6, =xe^-2x, ivp, y^prime
    • Replies: 5
    • Views: 121
    June 10th, 2018, 02:56 Go to last post
  16. 2.1.5 de with e

    Started by karush, June 9th, 2018 16:17
    $$displaystylemux, 2.1.5, =e^x$$, distribute, proceed
    • Replies: 7
    • Views: 101
    June 10th, 2018, 00:24 Go to last post
  17. [SOLVED] 2.1.4 de with trig

    Started by karush, June 9th, 2018 01:40
    $ux$, 2.1.4, 3cos, quad, x0$$
    • Replies: 6
    • Views: 88
    June 9th, 2018, 15:23 Go to last post
  18. [SOLVED] 2.1.4 solve de for y=

    Started by karush, June 8th, 2018 18:49
    $$displaystyle, 2.1.4, displaystyle, e^x, frace^-2x2e^x+fracce^x$$
    • Replies: 2
    • Views: 54
    June 9th, 2018, 00:59 Go to last post
  19. 2.1.2 Another de to solve

    Started by karush, June 7th, 2018 20:28
    • Replies: 9
    • Views: 133
    June 8th, 2018, 14:12 Go to last post
  20. [SOLVED] How do we show that it is finite?

    Started by evinda, June 3rd, 2018 05:35
    boundary, initial, leq, problem, show
    • Replies: 4
    • Views: 103
    June 3rd, 2018, 06:43 Go to last post
  21. Shock wave

    Started by evinda, May 29th, 2018 06:50
    geq, leq, shock, text, x_0
    • Replies: 1
    • Views: 129
    May 29th, 2018, 09:27 Go to last post
  22. Limit of integral

    Started by mathmari, May 29th, 2018 04:24
    boundary, dx$$, elimit, left, limit
    • Replies: 5
    • Views: 127
    May 29th, 2018, 08:18 Go to last post
  23. [SOLVED] Change variable to solve equation

    Started by evinda, May 28th, 2018 08:25
    2 Pages
    1 2
    change, equation, frac1fracdxdy=frac12y, fracdtdx=u_y, solve
    • Replies: 14
    • Views: 190
    May 29th, 2018, 06:51 Go to last post
  24. Why is the solution single-valued ?

    Started by evinda, May 28th, 2018 10:42
    $t=frac1pi$, $u$, 1-1, function, single-valued
    • Replies: 5
    • Views: 119
    May 29th, 2018, 02:54 Go to last post
  25. [SOLVED] Solve equation

    Started by evinda, May 27th, 2018 20:43
    2+frac[-4t+1, equation, left, rightarrow, sqrt4tx+8t+1]2tright^2$
    • Replies: 7
    • Views: 109
    May 28th, 2018, 18:25 Go to last post
  26. [SOLVED] Verify that the formula provides a solution of the pde

    Started by evinda, May 28th, 2018 06:02
    formula, pde, solution, verify, z=fracx-zta$
    • Replies: 3
    • Views: 106
    May 28th, 2018, 08:06 Go to last post
  27. [SOLVED] Non-homogeneous equation

    Started by evinda, May 27th, 2018 17:42
    • Replies: 8
    • Views: 90
    May 27th, 2018, 20:08 Go to last post
  28. Solution of PDE - Derivatives

    Started by mathmari, May 23rd, 2018 10:11
    2 Pages
    1 2
    • Replies: 13
    • Views: 261
    May 27th, 2018, 15:54 Go to last post

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Top 155 Thread Starters For "Differential Equations"

RankUser NamePercentage Of TotalThreadsMost Recent Thread
1dwsmith11.890What is meant by find the time...
2evinda10.177How do we get the solution?
3mathmari8.363Limit of integral
4find_the_fun5.542finding interval where second ...
5karush5.1392.2.8 de xy'+2y=sin x,y(pi)=1/...
6shamieh3.527Use series methods to solve [2...
7Markov3.325First order PDE
8ineedhelpnow2.821Critical Points, Stability
9onie mti2.519solving a cauchy problem
9ognik2.519Another Frobenius method ODE
10alane19942.217Population Dynamics... again
10kalish2.217Solving a system of an arbitra...
11nacho1.814Chebyshev Expansion (I need he...
12grandy1.713Boundary integral method to so...
13simo1.612looking at a solitary initial ...
14bergausstein1.411Elimination of constants
15Poirot1.29Fourier transform
16Julio1.08Laplace equation and Median Va...
17Cbarker10.97Example of systems of the diff...
18Alexmahone0.86Infinitely many solutions
19shorty0.75Damped Free Forced Vibration
19Alan0.75Lemma 4.5.1 on page 77 in the ...
19Cadbury0.75Solution of the equation
19brunette150.75Parametric representation of a...
20Fantini0.54Stable and unstable manifolds ...
20oasi0.54solving ODE with series
20ssh0.54Hypergeometric equation
20suvadip0.54differential eq of first order...
20LLand3140.54Need help setting up Different...
20nathancurtis110.54Finding a value for a y(0) = ...
20stripedcat0.54Bernoulli to Linear First Orde...
21Chris L T5210.43Status of DE Tutorial
21Carla19850.43Peak in single ODE within a sy...
21rsoy0.43Show whether the given ODE is ...
21ZiniaDuttaGupta0.43Stability, phase portrait, bif...
21Vishak0.43Second order inhomogeneous dif...
21Guest0.43System of differential equatio...
21frank12340.43Help on a 2nd Order Linear Dif...
21dansingh0.43reduction of linear or non lin...
21arrow270.43Fourier Transform
21DrWahoo0.43General DE questions and help
21MermaidWonders0.43More Differential Equations...
22Ackbach0.32Bessel Functions Cheat Sheet
22bkarpuz0.32Solution of the PDE?
22ifeg0.32what is the difference between...
22MacLaddy0.32Inflection Point of the Thresh...
22Sudharaka0.32Solving a Riccati Differential...
22Jason0.32ODE system. Limit cycle; Hopf ...
22madflame9910.32System of DEs
22Chipset36000.32ODE PVI problem.
22Amer0.32How to solve this Differential...
22Hurry0.32D'Lambert problem
22crevoise0.32Bernoulli / Riccati Equation
22topsquark0.32Simple pendulum, ref: POTW 156
22skatenerd0.32derivative of bessel function ...
22hatguy0.32Solving Nonlinear ODEs I
22wmccunes0.32Integrating factor, initial va...
22paulmdrdo0.32Differential Equation of Unkno...
22Kris0.32Help rearranging a linear firs...
22LATEBLOOMER0.32Differential equation populati...
22shen070.32PDE Solving Continuity Equatio...
22dearcomp0.32D.E with Physics Included
22Pranav0.32Solving a first-order differen...
22LAK0.32Separation of Variables
22cheatmenot0.32Obtaining Differential Equatio...
22rayne0.32general solution to 2nd order....
22Nikolas70.32Differential equation y/(x^2+y...
22Joppy0.32Discrete dynamical systems - I...
22markosheehan0.32differentiation equation: equa...
22jahrens0.32Help with another separable eq...
22abhay0.32wave equation
22kayella190.32Any one who can solve this?
22ToastIQ0.32General solution y''+2y'+y=x(e...
23Ulysses0.11Partial differential equation
23Kane0.11need help with transforming on...
23issacnewton0.11vanishing wronskian for linear...
23battleman130.11A few small questions about di...
23GreenGoblin0.11Cannot isolate y (first order ...
23MarkFL0.11Using the annihilator method t...
23nonsequitter0.11Dirichlet Problem for Laplace'...
23I like Serena0.11Interesting ODE
23charlottewill0.11Volterra-Lotka system.
23caffeinemachine0.11Book Recommendation for Ordina...
23blackthunder0.11first order pde
23themurgesh0.11Integrating Factor Question
23weber0.11Series Solution of a DE
23Usagi0.11Frobenius Method Queries
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23azuralshadow0.11Understanding partial solution...
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23superbread880.11Question on 1D heat equation
23U4770.11Air resistance equation
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23heaviside0.11Assistance needed for this ODE...
23ryo00710.11Nonlinear PDE
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23ipaper0.11A property of solution of ODE ...
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