Thanks for your fast response.
I'm still not quite sure how I am going to set it up. I have found the piece of paper with my supervisors hints. He does this:
(which is what you said basically)
and sets up x' = Ax, which has solution
This is the analytical solution and I understand it, but I'm kind of confused on the numerical methods way of doing it.
I think its meant to be RK4 on
and then on
, but what do I do with these two outputs?
I'm fairly sure the original equation is only meant to have 1 output.