I used dsolve from DEtools to solve a differential equation (i can solve it by hand but it's easier to type in the ODE than the solution). I want to assign the output of dsolve to a function y(x). I have:

> dsolve([ODE,IC1,IC2],phi(x));
(output) phi(x) = [big mess]

>solve(%,phi(x));
(output) [big mess]

(i.e. using solve(%,phi(x)) gets rid of the "phi(x)=") I want something like y := x -> [big mess] so I can plot it and its derivative and evaluate them at points. How do I get the ODE solution into a function?

11/13/2006 5:11:28 PM