(a) Calculate the Fourier coefficients a0, a1, a2, a3, b1, b2, and b3 for the periodic
Chapter 18, Problem 5(choose chapter or problem)
(a) Calculate the Fourier coefficients \(a_0,\ a_1,\ a_2, a_3, b_1, b_2\), and \(b_3\) for the periodic function \(f(t)=2 u(t)-2 u(t+1)+2 u(t+2)-2 u(t+3)+\cdots\).
(b) Sketch f (t) and the Fourier series truncated after n = 3 over 3 periods.
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