Quote Originally Posted by dennygibson View Post
Paul ... thanks! I appreciate the suggestions. Would this be the place to get some help using runge-kutta 4th order to solve simultaneous equations (using matrix operations) or am I barking up the wrong tree?
Denny,

I don't know if anyone in this forum has a background using RK to solve a system of DEs. A math forum might be a better place.

-- Russ