Re: populating a list from system of odes
- To: mathgroup at smc.vnet.net
- Subject: [mg45944] Re: populating a list from system of odes
- From: bobhanlon at aol.com (Bob Hanlon)
- Date: Fri, 30 Jan 2004 04:16:23 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
var = Cases[ode, f_Symbol[t], Infinity] // Union
Bob Hanlon
In article <bvaq98$ah0$1 at smc.vnet.net>, sean_incali at yahoo.com (sean kim) wrote:
<< let's say you have a system of ode's like..
{
a'[t] == k7 - k5 a[t] + k2 ab[t] - k1 a[t] b[t],
ab'[t] == -k2 ab[t] + k1 a[t] b[t],
b'[t] == k8 + k2 ab[t] - k6 b[t] - k1 a[t] b[t],
c'[t] == k3 ab[t] - k4 c[t]
}
now what I want to do is get a list of the variables in the system
without having to type them out.
so that I would get {a[t],ab[t], b[t], c[t]}