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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: 1,867
    September 11th, 2015, 10:13 Go to last post
  3. Sticky Thread Strm-Liouville Problem Cheat Sheet

    Started by Ackbach, September 4th, 2015 10:10
    • Replies: 0
    • Views: 1,696
    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: 2,922
    July 10th, 2013, 04:41 Go to last post
  1. Normal Thread Normal Threads

  2. Compact support

    Started by evinda, May 21st, 2018 10:34
    2 Pages
    1 2
    compact, equation, initial, support, wave
    • Replies: 19
    • Views: 351
    May 23rd, 2018, 10:55 Go to last post
  3. [SOLVED] Determine space of solution

    Started by evinda, May 10th, 2018 14:23
    condition, determine, leq, solution, space
    • Replies: 8
    • Views: 240
    May 11th, 2018, 05:47 Go to last post
  4. wave equation

    Started by abhay, May 2nd, 2018 10:15
    • Replies: 2
    • Views: 127
    May 8th, 2018, 08:16 Go to last post
  5. Integral equations.

    Started by Alan, March 6th, 2013 15:13
    • Replies: 3
    • Views: 863
    May 2nd, 2018, 01:37 Go to last post
  6. More Differential Equations...

    Started by MermaidWonders, March 30th, 2018 11:13
    • Replies: 8
    • Views: 298
    March 30th, 2018, 15:16 Go to last post
  7. Brine Mixture

    Started by MermaidWonders, March 24th, 2018 08:27
    3 Pages
    1 2 3
    • Replies: 23
    • Views: 515
    March 25th, 2018, 09:03 Go to last post
  8. Local Error: Euler/Crank-Nicholson

    Started by ChrisHuey, March 17th, 2018 21:28
    • Replies: 4
    • Views: 165
    March 19th, 2018, 10:29 Go to last post
  9. [SOLVED] Eigenvectors and Eigenvalues (311.5.5.15)

    Started by karush, March 15th, 2018 16:04
    2&-3&2, 3&3&-2, 4&1&1, beginarrayrrr, endarray
    • Replies: 4
    • Views: 218
    March 16th, 2018, 18:53 Go to last post
  10. Wronskian of Airy functions.

    Started by Alan, March 14th, 2018 08:00
    airy, bigg, cost^3/3+xtdt, functions, int_0^infty
    • Replies: 5
    • Views: 196
    March 15th, 2018, 07:17 Go to last post
  11. i.7 verify that the given function is a solution

    Started by karush, March 8th, 2018 19:34
    book, i.7, y^2, z&ne0, z^2^-1/2
    • Replies: 5
    • Views: 221
    March 9th, 2018, 17:25 Go to last post
  12. General solution y''+2y'+y=x(e^-x)+1

    Started by ToastIQ, March 4th, 2018 15:48
    form, general, kinds, solution, y+2y+y=xe^-x+1
    • Replies: 8
    • Views: 335
    March 5th, 2018, 21:01 Go to last post
  13. Differential Equations Problems

    Started by MermaidWonders, March 3rd, 2018 14:38
    2 Pages
    1 2
    • Replies: 11
    • Views: 501
    March 5th, 2018, 15:40 Go to last post
  14. [SOLVED] Example of systems of the differential linear equations

    Started by Cbarker1, March 3rd, 2018 21:33
    $d-3$, adding, equation, system, times
    • Replies: 1
    • Views: 126
    March 4th, 2018, 04:29 Go to last post
  15. Changing height in tank depending on time

    Started by havtorn, February 26th, 2018 09:18
    changing, constant, depending, tank, time
    • Replies: 1
    • Views: 126
    February 26th, 2018, 09:51 Go to last post
    • Replies: 3
    • Views: 189
    February 26th, 2018, 03:47 Go to last post
    • Replies: 1
    • Views: 159
    February 18th, 2018, 14:51 Go to last post
  16. Peak in single ODE within a system

    Started by Carla1985, January 25th, 2018 12:00
    alpha, beta, k_+, peak, system
    • Replies: 5
    • Views: 370
    January 25th, 2018, 17:09 Go to last post
  17. Differential equation w/ cos and sin

    Started by Emjay, November 16th, 2017 06:39
    begin, cos, differential, x^2, y=yx
    • Replies: 3
    • Views: 342
    December 22nd, 2017, 13:15 Go to last post
  18. Discrete dynamical systems - Invertible maps

    Started by Joppy, December 11th, 2017 19:55
    fphi_n, invertible, map, phi_n, theta
    • Replies: 8
    • Views: 388
    December 14th, 2017, 19:37 Go to last post
  19. General DE questions and help

    Started by DrWahoo, December 6th, 2017 14:37
    • Replies: 2
    • Views: 214
    December 11th, 2017, 04:02 Go to last post
  20. Inverse and differentation of an equation

    Started by ertagon2, November 16th, 2017 13:31
    2 Pages
    1 2
    • Replies: 16
    • Views: 779
    November 25th, 2017, 08:54 Go to last post
  21. [SOLVED] t1.13 solve the initial value problem

    Started by karush, November 10th, 2017 00:17
    hope, hours, initial, inside, suggestions
    • Replies: 1
    • Views: 217
    November 10th, 2017, 00:56 Go to last post
  22. Bounded Solution For Differential Inequality

    Started by Roger, October 4th, 2017 04:32
    bounded, differential, inequality, positive, solution
    • Replies: 5
    • Views: 509
    November 7th, 2017, 22:51 Go to last post
  23. Time Scale Calculus

    Started by DrWahoo, November 7th, 2017 04:57
    dissertation, introducing, research, time, topic
    • Replies: 0
    • Views: 227
    November 7th, 2017, 04:57 Go to last post
  24. Any one who can solve this?

    Started by kayella19, July 29th, 2017 09:45
    m9m+9mn-3n-ndn, n9m+18m-mn-ndm, solve
    • Replies: 7
    • Views: 810
    November 7th, 2017, 04:50 Go to last post
  25. Problem 13 from section 16.1 of Taylor's PDE textbook.

    Started by Alan, November 3rd, 2017 13:40
    • Replies: 1
    • Views: 208
    November 3rd, 2017, 14:19 Go to last post
  26. Well-posedness of a complex PDE.

    Started by Alan, October 1st, 2017 05:56
    assistance, hope, question, reply, well-posedness
    • Replies: 5
    • Views: 464
    October 3rd, 2017, 14:26 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
23rishadjb0.11Linear ODE for a fundamental s...
23azuralshadow0.11Understanding partial solution...
23thecoop0.11Finding Critical Points of a D...
23superbread880.11Question on 1D heat equation
23U4770.11Air resistance equation
23Petrus0.11First order linear differentia...
23heaviside0.11Assistance needed for this ODE...
23ryo00710.11Nonlinear PDE
23Jerome0.11Hankel and mellin transform
23ipaper0.11A property of solution of ODE ...
23krish0.11Solving an IVP for a system of...
23ends0.11Mixing Problem?
23nuggz6190.11First Order Differential Equat...
23Bibbster0.11Second order differential help...
23shocks900.11Integrating with trigo....ODE
23emily6000.11Partial DE-separation of varia...
23ISITIEIW0.11Verify a function is a solutio...
23goku9000.11Phase Line and long term behav...
23talha0.11non-linear first order differe...
23ChemEng0.112nd order ODE (Control Systems...
23tylerbizoff0.11Heat equation with annoying so...
23zkee0.11Homogeneous Functions
23mikky05v0.11Torrcelli's law of fluids
23CWolf0.11Singular Points
23Schmidt0.11Displacement of mass spring sy...
23Aryth0.11Finding Integral Curves
23mathgirl0.11Find all solutions (integral s...
23Pascal0.11Coupled ODEs
23jakejakejake0.11Laplace Transform, Finding sol...
23Naincy0.11First order linear ODE
23danthatdude0.11Second Order Linear ODE
23Milly0.11Integration of separate variab...
23PullandTwist0.11HELP: Orthogonal Trajectories
23PeterH0.11Modelling the motion of a mete...
23Rezalt0.11Help with motions of a double ...
23marrvo0.11Find equation system for bound...
23KD17290.11Identifying the Degree of a Di...
23xichyu10.11How can the six unknown number...
23superduck13850.11Partially Decoupled System
23Ciaran0.11Changing variables DE
23kJS0.11Inverse Laplace Transform 2
23notagenuis0.11Newton's Cooling Law
23ozkan120.11What does priori estimate do i...
23tiaborrego0.11Integrating Factor
23hornekat0.11Please help me solve this diff...
23NotaMathPerson0.11Exact ODE?
23Krish230.11Put the 2D nonlinear system in...
23Derby0.11Damped spring differental equa...
23WelshDave0.11Turning 2nd order into 1st ord...
23Sophie0.11Laplace transform help
23metstandard160.11Non-linear 2nd Order ODE
23flanker0.11Help to find asymptotic soluti...
23mahmoud shaaban0.11Linear differential equation
23rozin0.11Differential equation
23Umar0.11Find a product solution to the...
23Harambe0.11Differential equations stabili...
23wheepep0.11Differential equation
23Raisa0.11Self-similarity of nonlinear P...
23Roger0.11Bounded Solution For Different...
23ertagon20.11Inverse and differentation of ...
23Emjay0.11Differential equation w/ cos a...
23sumanraj0.11modeling the flow from a gate ...
23havtorn0.11Changing height in tank depend...
23ChrisHuey0.11Local Error: Euler/Crank-Nicho...
23mathcoral0.11Mixing with a Common Drain - p...
23ysammour0.11A NEW Method for solving diffe...
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