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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: 1,159
    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: 1,009
    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: 2,185
    July 10th, 2013, 04:41 Go to last post
  1. Normal Thread Normal Threads

  2. Help with Separable Equation

    Started by jahrens, July 5th, 2016 23:48
    8/t-27^1/3, appreciated, du/dt, times, u^2
    • Replies: 2
    • Views: 481
    July 6th, 2016, 00:50 Go to last post
  3. Superposition

    Started by jmorgan, June 14th, 2016 11:43
    ∑an, arbitrary, constants, sinn.pi.xe2n2.pi2t, superposition
    • Replies: 2
    • Views: 578
    June 15th, 2016, 16:47 Go to last post
  4. Separation of Variables/ODE

    Started by jmorgan, June 7th, 2016 07:03
    distribution, rod, seperation, temperature, variables/ode
    • Replies: 4
    • Views: 590
    June 14th, 2016, 19:29 Go to last post
  5. differentiation equation: equation of motion

    Started by markosheehan, June 12th, 2016 16:04
    distance, equation, particle, point, show
    • Replies: 8
    • Views: 768
    June 13th, 2016, 05:46 Go to last post
  6. Help to find asymptotic solution of linear ode

    Started by flanker, June 3rd, 2016 04:15
    • Replies: 6
    • Views: 939
    June 10th, 2016, 12:12 Go to last post
  7. Boundary value problem

    Started by evinda, June 7th, 2016 11:27
    boundary, characteristic, polynomial, problem, solution
    • Replies: 4
    • Views: 620
    June 7th, 2016, 15:00 Go to last post
  8. Laplace transform help

    Started by Sophie, April 19th, 2016 15:31
    laplace, stuck, subbing, transform, v0=0
    • Replies: 5
    • Views: 641
    April 19th, 2016, 18:24 Go to last post
  9. Damped spring differental equation

    Started by Derby, April 17th, 2016 10:15
    2 Pages
    1 2
    dx/dt, d^2, mass, spring, x/dt^2
    • Replies: 19
    • Views: 1,414
    April 19th, 2016, 02:24 Go to last post
  10. Turning 2nd order into 1st order

    Started by WelshDave, April 17th, 2016 18:35
    2nd, d^2, equation, h/dt^2, order
    • Replies: 3
    • Views: 528
    April 18th, 2016, 14:36 Go to last post
  11. HELP: Orthogonal Trajectories

    Started by PullandTwist, April 12th, 2016 21:09
    • Replies: 2
    • Views: 553
    April 12th, 2016, 22:22 Go to last post
  12. Solution of the problem in interlaced form

    Started by mathmari, April 1st, 2016 13:11
    form, interlaced, problem, rightarrow, solution
    • Replies: 2
    • Views: 601
    April 2nd, 2016, 14:39 Go to last post
  13. Is this the general solution?

    Started by mathmari, April 1st, 2016 14:52
    equation, homogeneous, root, solution, text
    • Replies: 2
    • Views: 523
    April 1st, 2016, 15:13 Go to last post
  14. Parametric representation of a line

    Started by brunette15, March 28th, 2016 02:37
    length, line, parametric, ranges, segment
    • Replies: 2
    • Views: 569
    March 30th, 2016, 04:14 Go to last post
  15. Another field lines of 3D vector functions question

    Started by brunette15, March 23rd, 2016 23:30
    dz/dt, unsure, vector, x^2, y^2
    • Replies: 2
    • Views: 541
    March 26th, 2016, 06:49 Go to last post
  16. Field lines of 3D vector functions

    Started by brunette15, March 23rd, 2016 23:16
    curves, field, lines, vector, x^2
    • Replies: 2
    • Views: 1,464
    March 26th, 2016, 06:48 Go to last post
  17. Does the equality hold ?

    Started by evinda, March 13th, 2016 11:26
    • Replies: 2
    • Views: 635
    March 15th, 2016, 20:29 Go to last post
  18. System of differential equations involving matrices

    Started by Guest, March 8th, 2016 19:31
    $fracdydt, $mathbfyt$, differential, equations, solution
    • Replies: 4
    • Views: 698
    March 8th, 2016, 22:42 Go to last post
  19. Gauss's theorem

    Started by evinda, February 22nd, 2016 12:58
    $int_mathbbr^3, deltagx, dx=, gausss, show
    • Replies: 1
    • Views: 547
    February 22nd, 2016, 19:34 Go to last post
  20. Put the 2D nonlinear system into Polar Coordinates

    Started by Krish23, February 21st, 2016 14:40
    coordinates, polar, system, x1^3, x2^3
    • Replies: 1
    • Views: 558
    February 21st, 2016, 15:44 Go to last post
  21. Second order ODE

    Started by Guest, January 30th, 2016 21:22
    &endcases$, doty-y-x+9t, integrating, linear, solved
    • Replies: 2
    • Views: 622
    January 30th, 2016, 23:29 Go to last post
  22. Homogeneous ODE

    Started by Guest, January 30th, 2016 19:02
    $displaystyle, 2y^2-9xy+8x^2$, equation, solve, xy-3x
    • Replies: 1
    • Views: 576
    January 30th, 2016, 19:25 Go to last post
  23. Why is the syllogism wrong?

    Started by evinda, January 22nd, 2016 17:11
    $$sign, defined, geq, y=leftbeginmatrix
    • Replies: 5
    • Views: 662
    January 25th, 2016, 15:26 Go to last post
  24. Existence of solution

    Started by evinda, January 25th, 2016 07:59
    $a$, existence, leq, solution, space
    • Replies: 0
    • Views: 454
    January 25th, 2016, 07:59 Go to last post
  25. How do we get the imaginary part?

    Started by evinda, January 24th, 2016 13:12
    cos, imaginary, part, sin, |cos
    • Replies: 4
    • Views: 629
    January 24th, 2016, 17:01 Go to last post
  26. Green's function

    Started by evinda, January 24th, 2016 16:28
    function, greens, homogeneous, problem, solutions
    • Replies: 0
    • Views: 401
    January 24th, 2016, 16:28 Go to last post
  27. Wronskian

    Started by evinda, January 24th, 2016 10:55
    equation, hint, write, wronskian, y_2s
    • Replies: 0
    • Views: 286
    January 24th, 2016, 10:55 Go to last post
  28. Cauchy problem

    Started by evinda, January 22nd, 2016 13:55
    cauchy, gxi, interval, problem, thought
    • Replies: 0
    • Views: 433
    January 22nd, 2016, 13:55 Go to last post
  29. [SOLVED] Help with Froebenious method

    Started by ognik, January 13th, 2016 21:47
    2alpha, 2a_j+1k+j+1, a_j+2k+j+2k+j+1, a_lambda, sum
    • Replies: 1
    • Views: 483
    January 15th, 2016, 18:20 Go to last post
  30. [SOLVED] Another Frobenius method ODE

    Started by ognik, January 14th, 2016 19:07
    .fk, a_j, forbenius, ode
    • Replies: 0
    • Views: 343
    January 14th, 2016, 19:07 Go to last post
  31. Why do we use this relation?

    Started by evinda, January 14th, 2016 13:12
    $sigma, $xt$, $yt$, geq, leq
    • Replies: 0
    • Views: 373
    January 14th, 2016, 13:12 Go to last post

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Top 148 Thread Starters For "Differential Equations"

RankUser NamePercentage Of TotalThreadsMost Recent Thread
1dwsmith12.690What is meant by find the time...
2evinda9.064Find sets
3mathmari8.661Limit of the solution - Which ...
4find_the_fun5.942finding interval where second ...
5shamieh3.827Use series methods to solve [2...
6Markov3.525First order PDE
7karush2.921t1.13 solve the initial value ...
7ineedhelpnow2.921Critical Points, Stability
8onie mti2.719solving a cauchy problem
8ognik2.719Another Frobenius method ODE
9alane19942.417Population Dynamics... again
9kalish2.417Solving a system of an arbitra...
10nacho2.014Chebyshev Expansion (I need he...
11grandy1.813Boundary integral method to so...
12simo1.712looking at a solitary initial ...
13bergausstein1.511Elimination of constants
14Poirot1.39Fourier transform
15Julio1.18Laplace equation and Median Va...
16Alexmahone0.86Infinitely many solutions
16Cbarker10.86Bernoulli Equation Checking th...
17shorty0.75Damped Free Forced Vibration
17Cadbury0.75Solution of the equation
17brunette150.75Parametric representation of a...
18Fantini0.64Stable and unstable manifolds ...
18oasi0.64solving ODE with series
18ssh0.64Hypergeometric equation
18suvadip0.64differential eq of first order...
18LLand3140.64Need help setting up Different...
18nathancurtis110.64Finding a value for a y(0) = ...
18stripedcat0.64Bernoulli to Linear First Orde...
19Chris L T5210.43Status of DE Tutorial
19Alan0.43Problem 13 from section 16.1 o...
19rsoy0.43Show whether the given ODE is ...
19ZiniaDuttaGupta0.43Stability, phase portrait, bif...
19Vishak0.43Second order inhomogeneous dif...
19Guest0.43System of differential equatio...
19frank12340.43Help on a 2nd Order Linear Dif...
19dansingh0.43reduction of linear or non lin...
19arrow270.43Fourier Transform
19DrWahoo0.43General DE questions and help
20Ackbach0.32Bessel Functions Cheat Sheet
20bkarpuz0.32Solution of the PDE?
20ifeg0.32what is the difference between...
20MacLaddy0.32Inflection Point of the Thresh...
20Sudharaka0.32Solving a Riccati Differential...
20Jason0.32ODE system. Limit cycle; Hopf ...
20madflame9910.32System of DEs
20Chipset36000.32ODE PVI problem.
20Amer0.32How to solve this Differential...
20Hurry0.32D'Lambert problem
20crevoise0.32Bernoulli / Riccati Equation
20topsquark0.32Simple pendulum, ref: POTW 156
20skatenerd0.32derivative of bessel function ...
20hatguy0.32Solving Nonlinear ODEs I
20wmccunes0.32Integrating factor, initial va...
20Carla19850.32Method of Characteristics
20paulmdrdo0.32Differential Equation of Unkno...
20Kris0.32Help rearranging a linear firs...
20LATEBLOOMER0.32Differential equation populati...
20shen070.32PDE Solving Continuity Equatio...
20dearcomp0.32D.E with Physics Included
20Pranav0.32Solving a first-order differen...
20LAK0.32Separation of Variables
20cheatmenot0.32Obtaining Differential Equatio...
20rayne0.32general solution to 2nd order....
20Nikolas70.32Differential equation y/(x^2+y...
20markosheehan0.32differentiation equation: equa...
20jahrens0.32Help with another separable eq...
20kayella190.32Any one who can solve this?
21Ulysses0.11Partial differential equation
21Kane0.11need help with transforming on...
21issacnewton0.11vanishing wronskian for linear...
21battleman130.11A few small questions about di...
21GreenGoblin0.11Cannot isolate y (first order ...
21MarkFL0.11Using the annihilator method t...
21nonsequitter0.11Dirichlet Problem for Laplace'...
21I like Serena0.11Interesting ODE
21charlottewill0.11Volterra-Lotka system.
21caffeinemachine0.11Book Recommendation for Ordina...
21blackthunder0.11first order pde
21themurgesh0.11Integrating Factor Question
21weber0.11Series Solution of a DE
21Usagi0.11Frobenius Method Queries
21rishadjb0.11Linear ODE for a fundamental s...
21azuralshadow0.11Understanding partial solution...
21thecoop0.11Finding Critical Points of a D...
21superbread880.11Question on 1D heat equation
21U4770.11Air resistance equation
21Petrus0.11First order linear differentia...
21heaviside0.11Assistance needed for this ODE...
21ryo00710.11Nonlinear PDE
21Jerome0.11Hankel and mellin transform
21ipaper0.11A property of solution of ODE ...
21krish0.11Solving an IVP for a system of...
21ends0.11Mixing Problem?
21nuggz6190.11First Order Differential Equat...
21Bibbster0.11Second order differential help...
21shocks900.11Integrating with trigo....ODE
21emily6000.11Partial DE-separation of varia...
21ISITIEIW0.11Verify a function is a solutio...
21goku9000.11Phase Line and long term behav...
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21ChemEng0.112nd order ODE (Control Systems...
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21zkee0.11Homogeneous Functions
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21Pascal0.11Coupled ODEs
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21Naincy0.11First order linear ODE
21danthatdude0.11Second Order Linear ODE
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21PullandTwist0.11HELP: Orthogonal Trajectories
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21marrvo0.11Find equation system for bound...
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21tiaborrego0.11Integrating Factor
21hornekat0.11Please help me solve this diff...
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21WelshDave0.11Turning 2nd order into 1st ord...
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