To calculate the fourier series, I used the formulae above, and I got:
and i substituted the values into the equation:
1. So what would my next step be? How do i show that the fourier series is given by the equation in the questions?
2. and using those results, how do i calculate 1-(1/4)+(1/9)-(1/16)+... and the 1/(n^2) sum to infinity?
Thanks