Re: NDSolve

*To*: mathgroup at smc.vnet.net*Subject*: [mg65689] Re: [mg65684] NDSolve*From*: Bob Hanlon <hanlonr at cox.net>*Date*: Sun, 16 Apr 2006 01:44:45 -0400 (EDT)*Reply-to*: hanlonr at cox.net*Sender*: owner-wri-mathgroup at wolfram.com

soln=y/.NDSolve[{y'[x]==Sin[x],y[1]==1},y,{x,0,3}][[1]]; {soln[2],soln'[2]} {1.95645,0.909305} Plot[{soln[x],soln'[x]},{x,0,3}]; Bob Hanlon > > From: "Subbu" <subbaraokommuri at gmail.com> To: mathgroup at smc.vnet.net > Subject: [mg65689] [mg65684] NDSolve > > 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 > >