I have a problem here. I really hope someone will help me!
I have a function that could be derivated two times. The function is like this:
1) f(pi) = 2.
2) the definite integral from 0 to pi is ( f(x) + f ''(x) )*sin(x) dx = 5.
(...by using integration by parts.)
(I'm really sorry that I still don't manage LaTeX, but I'll learn it as soon as possible...)