Re: Ndsolve
- To: mathgroup at smc.vnet.net
- Subject: [mg84059] Re: [mg84023] Ndsolve
- From: DrMajorBob <drmajorbob at bigfoot.com>
- Date: Fri, 7 Dec 2007 06:58:20 -0500 (EST)
- References: <2887900.1197025122155.JavaMail.root@m35>
- Reply-to: drmajorbob at bigfoot.com
InterpolationFunction _is_ a numerical answer. For instance, execute:
Clear[y]
y = y /. First@
NDSolve[{y'[x] == Cos@Sin[x^2], y[0] == 0}, y, {x, 0, Pi}]
y[0]
y[1]
y[Pi]
Plot[y[x], {x, 0, Pi}]
and the output is
InterpolatingFunction[{{0.,3.14159}},<>]
0.
0.919768
2.52142
(and a plot)
Bobby
On Fri, 07 Dec 2007 02:01:10 -0600, DrunkenButterfly
<darkladymacbeth at hotmail.com> wrote:
> I'm confused about the "interpolation" thing. Why if I have some diff eq
> with boundary conditions NdSolve doesn't give me a numerical solution?
> And suppose I have
>
> y'[x]== f[x]
> with y[a]== b as a condition (a,b any numbers)
>
> How can I find f[0], for example? (Generalizing, how can I find f[c],
> where c is a number?)
>
> Thanks to everyone! And please, help me :(
>
>
--
DrMajorBob at bigfoot.com