Write f(t) = 1 + t as fourier series, with only cosine terms in the interval [0,pi]
For which values of t does the series converge to f ?
The Attempt at a Solution
Expand f = 1+t as an even function about t=0; so it will be a zig-zag with non continous points at -pi,0,pi, 2pi etc
the first part is simple, but the second; I was thinking that the Fourier series is converging to f, exept where f is not continous. So the answer is [tex] t \in ]0,\pi[ [/tex]
Is that correct?