Question regarding the output of NDSolve
- To: mathgroup at smc.vnet.net
- Subject: [mg9573] Question regarding the output of NDSolve
- From: Wretch <arc at astro.columbia.edu>
- Date: Thu, 13 Nov 1997 01:40:33 -0500
- Organization: Vacuum
- Sender: owner-wri-mathgroup at wolfram.com
Suppose you use NDSolve to generate numerical solutions to a set of
coupled ODEs with 4 dependent variables, say. The output is in the
form of an interpolating function. My question is how to manipulate
the output.
I called the vector of solutions SOLUTIONS, which has dimensions of
{1,4}. The index running from 1-4 defines the dependent variables
a,b,c,d, respectively.
I want to extract
the minimum and maximum values of each particular solution. I tried the
command
minimum = Min[c /. SOLUTIONS[[1,3]] ]
but this didn't work. Nor did the simpler attempt
minimum = Min[c /. SOLUTIONS ]
Any assistance would be greatly appreciated.
Thanks,
Alex