Recent content by zahra

Hi DrClaude .thanks! Really ? but my master told me that use NDS ! Do we have other way to solve this proplem?

Hi. 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.