Recent content by pinkflahippo

I'm working on a P.D.E. homework problem and the one part of it my professor gave us a function and wants us to set it equal to a given series and find the variable. Specifically, find f(sub n) in x-x^{2}=\sum (from n=1 to \infty) f(sub n) sin(n\pix) I'm not sure exactly how to do this. I...