1. (15 pts) Compute the Fourier series coefficients of the following signals. Then in MATLAB, plot the real and imaginary parts of the Fourier Series coefficients from a_1 to an. (a) Periodic function with period 27 given by r(t) = \t| Vte [-1,1]. (b) Periodic function as illustrated. X(t) (c) Periodic function as illustrated. Ax(1) 1 - 1 4