In: Electrical Engineering
Signals and systems
Find the complex exponential Fourier series for the following signals. In each case plot the magnitude and phase line spectra for k ≥ 0.
(i) x1(t) = cos(5t + 45o )
(ii) x2(t) = sin2 (t)
(iii) x3(t) = cos(3t) + cos(5t)]