1. Can't find coefficients for
i=A*sin(w*t) 0<t<T/2
i=0 T/2<t<T
i=f(t+T)
I am getting for a0=0 I think its not right.


2. Another one I can't find solution is
f(x) = cos(x) 0<x< Pi/2
f(x) = 0 Pi/2 < x < Pi
f(x) = F(x+2 )

Would appreciate any help! I am sorry I am not able to post my questions in Latex.
I hope this is OK.