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
>
>