Re: FindRoot & NDSolve
- To: mathgroup at smc.vnet.net
- Subject: [mg64678] Re: [mg64650] FindRoot & NDSolve
- From: "David Park" <djmp at earthlink.net>
- Date: Sun, 26 Feb 2006 05:08:00 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Takashi, I think you need a numerical value for a in order to use NDSolve. If you have trouble with a statement like you have, the thing to do is copy out the inner expressions and make certain they work. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Takashi Inoue [mailto:takash-i at sophia.ac.jp] To: mathgroup at smc.vnet.net Hi all, This is my first post to here. I have a problem and want your help. Mathematica 4 did the following calculation with no pleblem, while Mathematica 5(.2) cannot do it. FindRoot[ (f /.NDSolve[ {D[f[x], {x,1}] - 2 x - a == 0, f[0] == 0}, f, {x, -3, 3} ][[1]])[2] == 4, {a, -10, 10} ] Does anyone know solution or altanative way to do it? Takashi Inoue, Dept. Phys. Sophia University