Oh, I don't want to cheat! I don't study or anything. But I now realize that this suspicion and misunderstanding is natural given my brief post.

I'd need some code that solves a specific kind of problem. It includes curve fitting and probably requires numerical methods. Also, it needs to be a bit efficient, nothing extreme but it shouldn't waste computational power. Matlab M-code would be fine if it compiles well. I've looked at it and just might work my way through it in M-code, but it'd take me quite some time and effort. While I like math, I'm not very good at it...
:P

The code could be completely open source if someone else ever has some use for it. I leave that to the author. I just want to be able to use it myself, w/o commercial interests.

The problem is probably not very hard or time consuming at all for someone with more than rudimetnary math education. But it's a bit more than I'd ask someone to do for free, and the purpose is to get a piece of working code, rather than learning math.

I'll take a look at the problem again before I try to specify it.