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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: 792
    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: 715
    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: 1,706
    July 10th, 2013, 04:41 Go to last post
  1. Normal Thread Normal Threads

  2. Show that the function is the solution

    Started by evinda, January 15th, 2017 18:41
    • Replies: 5
    • Views: 106
    Yesterday, 20:05 Go to last post
  3. Uniqueness of solution

    Started by evinda, October 9th, 2016 11:37
    2 Pages
    1 2
    delta, int_partialb_r, leq, phix_0right|=left|, xi|phixi-phix_0|
    • Replies: 17
    • Views: 458
    January 19th, 2017, 17:03 Go to last post
  4. Are these all the cases?

    Started by evinda, January 16th, 2017 17:56
    $q_t$, continuous, omega, s_t$, times
    • Replies: 0
    • Views: 31
    January 16th, 2017, 17:56 Go to last post
  5. Questions about proof of theorem

    Started by evinda, January 11th, 2017 15:51
    $omega$, $overlineomega, phi$, setminus, x_0
    • Replies: 1
    • Views: 89
    January 15th, 2017, 07:57 Go to last post
  6. How do we get the relations?

    Started by evinda, December 14th, 2016 16:12
    $gx$, dphi=frac12, int_0^2, nabla_xih, sinphi
    • Replies: 8
    • Views: 260
    December 20th, 2016, 10:45 Go to last post
  7. How do we get the formulas?

    Started by evinda, December 17th, 2016 10:05
    $vt, equation, function, solution, tau$
    • Replies: 0
    • Views: 66
    December 17th, 2016, 10:05 Go to last post
  8. 2 Differential Equations by Substitution

    Started by abhay, December 14th, 2016 02:51
    • Replies: 5
    • Views: 165
    December 16th, 2016, 00:33 Go to last post
  9. [SOLVED] method of integrating factor

    Started by karush, December 10th, 2016 02:48
    displaystyle, equation$, factor, integrating, method
    • Replies: 2
    • Views: 97
    December 10th, 2016, 03:24 Go to last post
  10. 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: 276
    December 4th, 2016, 08:28 Go to last post
  11. 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: 167
    December 3rd, 2016, 18:56 Go to last post
  12. Differential equation

    Started by wheepep, November 26th, 2016 13:44
    constant, differential equations, equation, find, respect
    • Replies: 2
    • Views: 154
    November 26th, 2016, 16:48 Go to last post
  13. 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: 115
    November 25th, 2016, 18:26 Go to last post
  14. How do we apply the proposition?

    Started by evinda, November 16th, 2016 05:44
    $omega$, ball, omega, subharmonic, text
    • Replies: 4
    • Views: 196
    November 23rd, 2016, 19:06 Go to last post
  15. Show inequality

    Started by evinda, November 17th, 2016 09:26
    2 Pages
    1 2
    epsilon, e^gamma, leq, show, x_1
    • Replies: 18
    • Views: 384
    November 22nd, 2016, 14:32 Go to last post
  16. How can we improve the estimate?

    Started by evinda, November 20th, 2016 15:50
    3 Pages
    1 2 3
    • Replies: 21
    • Views: 426
    November 21st, 2016, 16:03 Go to last post
  17. 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: 557
    November 20th, 2016, 10:29 Go to last post
  18. 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: 416
    November 16th, 2016, 14:53 Go to last post
  19. Differential equations stability

    Started by Harambe, November 9th, 2016 10:03
    $|xt-p|, equilibrium, leq, stability, stable
    • Replies: 2
    • Views: 155
    November 9th, 2016, 12:01 Go to last post
  20. 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: 582
    October 30th, 2016, 13:40 Go to last post
  21. 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: 248
    October 30th, 2016, 06:26 Go to last post
  22. How to compute the integral

    Started by evinda, October 12th, 2016 13:16
    $l=, compute, wave, x^2+y^2, integral
    • Replies: 9
    • Views: 322
    October 22nd, 2016, 17:17 Go to last post
  23. 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: 506
    October 21st, 2016, 05:20 Go to last post
  24. Condition of function

    Started by evinda, October 10th, 2016 12:13
    $delta, $int_partialomega, ds=-1$, function, hold
    • Replies: 0
    • Views: 108
    October 10th, 2016, 12:13 Go to last post
  25. Exact ODE?

    Started by NotaMathPerson, September 9th, 2016 08:56
    $$y-2x^2ydx, 0$$, equation, ode, xdy
    • Replies: 4
    • Views: 280
    September 9th, 2016, 09:50 Go to last post
  26. Non-linear 2nd Order ODE

    Started by metstandard16, May 8th, 2016 10:45
    2nd, equation, ode, order, points
    • Replies: 3
    • Views: 370
    September 3rd, 2016, 16:51 Go to last post
  27. Differential equation

    Started by rozin, September 3rd, 2016 16:09
    differential, equation, family, normals, y=x^2
    • Replies: 1
    • Views: 136
    September 3rd, 2016, 16:26 Go to last post
  28. differentiation equation

    Started by markosheehan, June 11th, 2016 07:16
    acceleration, dv/dt=, dv=25+v²ds, s=.01, speed
    • Replies: 2
    • Views: 354
    July 20th, 2016, 12:26 Go to last post
  29. Help with another separable equation

    Started by jahrens, July 6th, 2016 00:56
    good, idea, ideas, isolate, mistakes
    • Replies: 4
    • Views: 312
    July 20th, 2016, 12:16 Go to last post
  30. 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: 235
    July 6th, 2016, 00:50 Go to last post
  31. Superposition

    Started by jmorgan, June 14th, 2016 11:43
    ∑an, arbitrary, constants, sinn.pi.xe2n2.pi2t, superposition
    • Replies: 2
    • Views: 319
    June 15th, 2016, 16:47 Go to last post

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