Hello all, I am dealing with a rather complicated problem (as we all do), without much knowledge in differential equations. I have coded a numerical solution, taking a straightforward approach: constructing the functions step by step, but I would like to try to achieve better precision. Any hint about the type of problem I am facing, about relevant solution methods, etc., so that I can start exploring the literature, will be greatly appreciated! https://dl.dropbox.com/u/17308924/problem.GIF [Broken] Thank you! Urbanist.