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MathGroup Archive 2004

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Re: Error with NDSolve

  • To: mathgroup at smc.vnet.net
  • Subject: [mg51065] Re: Error with NDSolve
  • From: mathma18 at hotmail.com (Narasimham G.L.)
  • Date: Sun, 3 Oct 2004 05:47:37 -0400 (EDT)
  • References: <200409280458.AAA23991@smc.vnet.net> <cjdq6g$ass$1@smc.vnet.net> <200409300852.EAA26524@smc.vnet.net> <cjj7in$bpf$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

Possible, would  reinstall it. 
 
DrBob <drbob at bigfoot.com> wrote in message news:<cjj7in$bpf$1 at smc.vnet.net>...
> All three schemes work just fine. If the first doesn't work for you, there's something wrong with your Mathematica installation or option settings.
> 
> Bobby
> 
> On Thu, 30 Sep 2004 04:52:30 -0400 (EDT), Narasimham G.L. <mathma18 at hotmail.com> wrote:
> 
> > DrBob <drbob at bigfoot.com> wrote in message news:<cjdq6g$ass$1 at smc.vnet.net>...
> >> NDSolve[{si2'[t] == 2, si2[0] == 0, th2'[t] == Sin[si2[t]]/r2[t], th2[
> >>        0] == 0, r2'[t] == Cos[si2[t]], r2[0] == 1}, {si2, r2, th2}, {
> >>        t, 0, 25}];
>  
> >> r[t_] = r2[t] /. First[%]
> >> th[t_] = th2[t] /. First[%%]
> >> si[t_] = si2[t] /. First[%%%]
> >
> > Above three lines have some problem,but next two schemes work fine, Thanks.


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