Find without calculation which terms will be present in the

Find, without calculation, which terms will be present in the Fourier series for the periodic functions f(t), of period T, that are given in the range -T/2 to T/2 by: f(t) = 2 for 0 lessthanorequalto |t|

Solution

A) in this case Fourier series contains cosine and sine terms since we can not decide f is even or odd in the internal

B) since f is even function , Fourier series contains only cosine terms