Please, I need help step by step.
3.20. Compute the Fourier transform of the signals in Figure P3.20. Plot the magnitude and phase of the Fourier transform. Use the symbolic manipulator to perform the integrations or to check the answers.
x(t) = cos(0.5t) + 0.5cos(t)
(a)
(b)
x(t)
0
2
0
(c)
(d)
FIGURE P3.20