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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: 796
    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: 717
    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: 1,713
    July 10th, 2013, 04:41 Go to last post
  1. Normal Thread Normal Threads

  2. [SOLVED] Find Ansatz for this ODE (3.5.15)

    Started by ognik, January 12th, 2016 18:53
    ansatz, find, good, solution, worked
    • Replies: 2
    • Views: 340
    January 12th, 2016, 21:25 Go to last post
  3. Irregular singularity

    Started by ognik, January 12th, 2016 19:44
    book, infty$, irregular, putting, singularity
    • Replies: 0
    • Views: 274
    January 12th, 2016, 19:44 Go to last post
  4. [SOLVED] Please check this particular solution excercise

    Started by ognik, January 11th, 2016 18:33
    $y_p, ansatz, cos, omega, sin
    • Replies: 3
    • Views: 443
    January 12th, 2016, 17:47 Go to last post
  5. [SOLVED] Help with ODE initial conditions

    Started by ognik, January 11th, 2016 18:12
    book, conditions, eqtn, initial, ode
    • Replies: 2
    • Views: 376
    January 11th, 2016, 23:05 Go to last post
  6. [SOLVED] Please check this ODE (1)

    Started by ognik, January 10th, 2016 21:13
    cos, c_1, c_2, left, sqrt2$
    • Replies: 7
    • Views: 548
    January 11th, 2016, 23:04 Go to last post
  7. Please check Laguerre's eqtn solution

    Started by ognik, December 19th, 2015 15:50
    eqtn, e^-x, factor, laguerres, self-adjoint
    • Replies: 5
    • Views: 508
    January 9th, 2016, 17:23 Go to last post
  8. [SOLVED] a^2 u_xx=u_t

    Started by karush, January 5th, 2016 22:07
    complicated, differential, equation, returned, ti-nspire
    • Replies: 2
    • Views: 431
    January 6th, 2016, 16:31 Go to last post
  9. [SOLVED] a^2 U_xx = u_tt

    Started by karush, January 2nd, 2016 19:16
    $$u_1leftx, atright$$, constant, tright=sinleftlambda, u_xx
    • Replies: 5
    • Views: 423
    January 6th, 2016, 00:25 Go to last post
  10. Differential equation y/(x^2+y^2)

    Started by Nikolas7, January 1st, 2016 11:30
    • Replies: 4
    • Views: 395
    January 2nd, 2016, 11:58 Go to last post
  11. solve the differential equation

    Started by Nikolas7, December 20th, 2015 04:24
    уу^primeprime=2ху^prime^2, differential, equation, solve
    • Replies: 6
    • Views: 454
    January 1st, 2016, 11:23 Go to last post
  12. [SOLVED] U_xx + U_yy = 0

    Started by karush, December 31st, 2015 19:00
    $$fracdu^2d^2, coshy, u_yy, x+fracdu^2d^2, y=0$$
    • Replies: 5
    • Views: 468
    December 31st, 2015, 23:39 Go to last post
  13. [SOLVED] Order and linear or nonlinear

    Started by karush, December 18th, 2015 18:23
    • Replies: 6
    • Views: 750
    December 27th, 2015, 17:15 Go to last post
  14. [SOLVED] write ODE solution as reals

    Started by ognik, December 15th, 2015 23:30
    c_1cos3x, euler, isin3x, ode, solution
    • Replies: 4
    • Views: 519
    December 20th, 2015, 17:02 Go to last post
  15. Identifying Critical Points

    Started by ineedhelpnow, December 15th, 2015 12:49
    critical, improper, node, point, proper
    • Replies: 3
    • Views: 370
    December 15th, 2015, 21:41 Go to last post
  16. [SOLVED] Higher power constant coefficiants ODEs

    Started by ognik, December 15th, 2015 17:19
    divides, finding, r-1, roots, terms
    • Replies: 2
    • Views: 390
    December 15th, 2015, 17:51 Go to last post
  17. Critical Points, Stability

    Started by ineedhelpnow, December 15th, 2015 13:29
    awesome, final, hours, question, quickly
    • Replies: 7
    • Views: 409
    December 15th, 2015, 17:49 Go to last post
  18. method of undetermined coefficients

    Started by ineedhelpnow, December 14th, 2015 22:07
    coefficients, final, method, questions, undetermined
    • Replies: 9
    • Views: 530
    December 15th, 2015, 03:06 Go to last post
  19. variation of parameters

    Started by ineedhelpnow, December 15th, 2015 01:00
    include, latex, parameters, steps, variation
    • Replies: 2
    • Views: 273
    December 15th, 2015, 02:02 Go to last post
  20. [SOLVED] Determine order and if the equation is linear

    Started by karush, December 14th, 2015 20:42
    determine, equation, linear, order, problems
    • Replies: 0
    • Views: 257
    December 14th, 2015, 20:42 Go to last post
  21. Does this stand also for f?

    Started by mathmari, December 12th, 2015 17:53
    differential, equation, mid, root, solution
    • Replies: 0
    • Views: 276
    December 12th, 2015, 17:53 Go to last post
  22. [SOLVED] Solutions in a ring

    Started by mathmari, October 23rd, 2015 11:56
    $$axz+bxz=yz$$, $r$, $y$, ring, solutions
    • Replies: 3
    • Views: 377
    December 12th, 2015, 12:29 Go to last post
  23. Particular solution

    Started by mathmari, December 10th, 2015 14:15
    a_mx^m$$, equation, homogeneous, multiplicity, solution
    • Replies: 0
    • Views: 284
    December 10th, 2015, 14:15 Go to last post
  24. Non-zero solutions

    Started by mathmari, December 10th, 2015 11:17
    equation, homogeneous, linear, ring, solution
    • Replies: 0
    • Views: 288
    December 10th, 2015, 11:17 Go to last post
  25. System of differential equations

    Started by mathmari, November 25th, 2015 13:13
    $ly=f$, differential, equation, solution, system
    • Replies: 5
    • Views: 551
    December 7th, 2015, 07:46 Go to last post
  26. Uniqueness

    Started by mathmari, November 13th, 2015 15:26
    $lambda_1, dots, eigenvalues, equation, solution
    • Replies: 1
    • Views: 397
    December 6th, 2015, 15:26 Go to last post
  27. Fourier Transform

    Started by arrow27, December 3rd, 2015 19:15
    • Replies: 1
    • Views: 285
    December 4th, 2015, 19:04 Go to last post
  28. Another Laplace Transform

    Started by ineedhelpnow, December 1st, 2015 19:26
    laplace, transform
    • Replies: 2
    • Views: 293
    December 1st, 2015, 21:24 Go to last post
  29. Find the Laplace Transform

    Started by ineedhelpnow, December 1st, 2015 15:41
    find, laplace, started, transform, working
    • Replies: 4
    • Views: 313
    December 1st, 2015, 19:51 Go to last post
  30. Laplace transform

    Started by ineedhelpnow, December 1st, 2015 18:37
    laplace, transform
    • Replies: 2
    • Views: 226
    December 1st, 2015, 18:46 Go to last post
  31. Solving an ODE in powers of x

    Started by ineedhelpnow, December 1st, 2015 14:15
    1-x^2y-2xy+42y=0, due, powers, solve, started
    • Replies: 2
    • Views: 239
    December 1st, 2015, 15:38 Go to last post

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