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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: 1,006
    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: 887
    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: 2,048
    July 10th, 2013, 04:41 Go to last post
  1. Normal Thread Normal Threads

  2. [SOLVED] method of integrating factor

    Started by karush, December 10th, 2016 02:48
    displaystyle, equation$, factor, integrating, method
    • Replies: 2
    • Views: 253
    December 10th, 2016, 03:24 Go to last post
  3. Application of chain rule

    Started by evinda, December 2nd, 2016 05:26
    2 Pages
    1 2
    +infty, derivative, mathbbr^n$, rule, times
    • Replies: 12
    • Views: 885
    December 4th, 2016, 08:28 Go to last post
  4. Show that the function is a solution of the equation

    Started by evinda, December 2nd, 2016 19:55
    cdots, dots+, i=1, v_2, x_i
    • Replies: 8
    • Views: 551
    December 3rd, 2016, 18:56 Go to last post
  5. Differential equation

    Started by wheepep, November 26th, 2016 13:44
    constant, differential equations, equation, find, respect
    • Replies: 2
    • Views: 320
    November 26th, 2016, 16:48 Go to last post
  6. The functions is equal to zero for x=0

    Started by evinda, November 25th, 2016 05:32
    gammat, mathbbr, problem, text, x=phix
    • Replies: 2
    • Views: 291
    November 25th, 2016, 18:26 Go to last post
  7. How do we apply the proposition?

    Started by evinda, November 16th, 2016 05:44
    $omega$, ball, omega, subharmonic, text
    • Replies: 4
    • Views: 492
    November 23rd, 2016, 19:06 Go to last post
  8. Show inequality

    Started by evinda, November 17th, 2016 09:26
    2 Pages
    1 2
    epsilon, e^gamma, leq, show, x_1
    • Replies: 18
    • Views: 1,111
    November 22nd, 2016, 14:32 Go to last post
  9. How can we improve the estimate?

    Started by evinda, November 20th, 2016 15:50
    3 Pages
    1 2 3
    • Replies: 21
    • Views: 1,265
    November 21st, 2016, 16:03 Go to last post
  10. Can we just use a part of the boundary?

    Started by evinda, November 16th, 2016 16:33
    3 Pages
    1 2 3
    $omega$, $u$, $u=0$, leq, maximum
    • Replies: 27
    • Views: 1,217
    November 20th, 2016, 10:29 Go to last post
  11. Maximum principle for subharmonic functions

    Started by evinda, November 10th, 2016 16:14
    2 Pages
    1 2
    $omega$, $v$, constant, harmonic, maximum
    • Replies: 16
    • Views: 970
    November 16th, 2016, 14:53 Go to last post
  12. Differential equations stability

    Started by Harambe, November 9th, 2016 10:03
    $|xt-p|, equilibrium, leq, stability, stable
    • Replies: 2
    • Views: 355
    November 9th, 2016, 12:01 Go to last post
  13. Show that the function equals to the zero function

    Started by evinda, October 22nd, 2016 09:34
    3 Pages
    1 2 3
    $delta, $omega$, continuous, show, subset
    • Replies: 21
    • Views: 1,354
    October 30th, 2016, 13:40 Go to last post
  14. Show that limit is equal to zero

    Started by evinda, October 26th, 2016 15:16
    dass, fracpartialuxipartialv_xi, geq, int_partialb_epsilon, lim_epsilon
    • Replies: 6
    • Views: 585
    October 30th, 2016, 06:26 Go to last post
  15. How to compute the integral

    Started by evinda, October 12th, 2016 13:16
    $l=, compute, wave, x^2+y^2, integral
    • Replies: 9
    • Views: 756
    October 22nd, 2016, 17:17 Go to last post
  16. Find the function at the point (0,0)

    Started by evinda, October 18th, 2016 16:35
    3 Pages
    1 2 3
    delta, function, int_x^2+y^2=1, phi, theorem
    • Replies: 20
    • Views: 1,136
    October 21st, 2016, 05:20 Go to last post
  17. Exact ODE?

    Started by NotaMathPerson, September 9th, 2016 08:56
    $$y-2x^2ydx, 0$$, equation, ode, xdy
    • Replies: 4
    • Views: 535
    September 9th, 2016, 09:50 Go to last post
  18. Non-linear 2nd Order ODE

    Started by metstandard16, May 8th, 2016 10:45
    2nd, equation, ode, order, points
    • Replies: 3
    • Views: 563
    September 3rd, 2016, 16:51 Go to last post
  19. Differential equation

    Started by rozin, September 3rd, 2016 16:09
    differential, equation, family, normals, y=x^2
    • Replies: 1
    • Views: 276
    September 3rd, 2016, 16:26 Go to last post
  20. differentiation equation

    Started by markosheehan, June 11th, 2016 07:16
    acceleration, dv/dt=, dv=25+v²ds, s=.01, speed
    • Replies: 2
    • Views: 504
    July 20th, 2016, 12:26 Go to last post
  21. Help with another separable equation

    Started by jahrens, July 6th, 2016 00:56
    good, idea, ideas, isolate, mistakes
    • Replies: 4
    • Views: 578
    July 20th, 2016, 12:16 Go to last post
  22. 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: 406
    July 6th, 2016, 00:50 Go to last post
  23. Superposition

    Started by jmorgan, June 14th, 2016 11:43
    ∑an, arbitrary, constants, sinn.pi.xe2n2.pi2t, superposition
    • Replies: 2
    • Views: 522
    June 15th, 2016, 16:47 Go to last post
  24. Separation of Variables/ODE

    Started by jmorgan, June 7th, 2016 07:03
    distribution, rod, seperation, temperature, variables/ode
    • Replies: 4
    • Views: 527
    June 14th, 2016, 19:29 Go to last post
  25. differentiation equation: equation of motion

    Started by markosheehan, June 12th, 2016 16:04
    distance, equation, particle, point, show
    • Replies: 8
    • Views: 692
    June 13th, 2016, 05:46 Go to last post
  26. Help to find asymptotic solution of linear ode

    Started by flanker, June 3rd, 2016 04:15
    • Replies: 6
    • Views: 802
    June 10th, 2016, 12:12 Go to last post
  27. Boundary value problem

    Started by evinda, June 7th, 2016 11:27
    boundary, characteristic, polynomial, problem, solution
    • Replies: 4
    • Views: 550
    June 7th, 2016, 15:00 Go to last post
  28. Laplace transform help

    Started by Sophie, April 19th, 2016 15:31
    laplace, stuck, subbing, transform, v0=0
    • Replies: 5
    • Views: 568
    April 19th, 2016, 18:24 Go to last post
  29. 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: 1,244
    April 19th, 2016, 02:24 Go to last post
  30. 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: 478
    April 18th, 2016, 14:36 Go to last post
  31. HELP: Orthogonal Trajectories

    Started by PullandTwist, April 12th, 2016 21:09
    • Replies: 2
    • Views: 474
    April 12th, 2016, 22:22 Go to last post

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