Re: NDSolve

*To*: mathgroup at smc.vnet.net*Subject*: [mg65715] Re: [mg65684] NDSolve*From*: "David Park" <djmp at earthlink.net>*Date*: Sun, 16 Apr 2006 01:45:21 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Use... Clear[y] ysol = NDSolve[.....] y[x_] = y[x]/.ysol David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Subbu [mailto:subbaraokommuri at gmail.com] To: mathgroup at smc.vnet.net Hi, I have a question regarding usage of solution given by NDSolve function Suppose We have solved one ODE with NDSolve, it will give the solution as interpolating function. Suppose I am solving a ODE for solution of y as a function of x, I will get solution like {y -> InterpolatingFunction[{{0., 1.}}, <>]}. Now I can get the values of y at any x using y[x]/.sol/.x->0.5 But Suppose I want to evaluate the y' [x](Derivative of y) how can we get it that from the solution of NDSolve Thank you