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Problem with ndsolve

  1. Oct 17, 2014 #1
    How can i solve below equation with ndsolver ?
    dp/dt = a * d^2p/dx^2 * cos^2 (theta) + b d^2p/dt^2 + c d^2p /d(theta)^2
    where a , b, c are constant. d^2p/dx^2 is second derivative with respect to x. theta is angle.
  2. jcsd
  3. Oct 17, 2014 #2


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    Staff: Mentor

    Hi zahra, welcome to PF!

    p is a function of x, theta, and t, so this is not an ordinary differential equation, but a partial differential equation. NDsove can't be used. Solving PDEs is not trivial.
  4. Oct 17, 2014 #3
    Hi DrClaude .thanks!
    Really ? but my master told me that use NDS ! Do we have other way to solve this proplem?
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