6. MATLAB Problem: Consider the periodic function f(t) with period 1 specified in the interval -0.5 sts0.5 by f(t)1 ft0.25 f(t) -0 if 0.25 S t S 0.5 Find Dn, the exponential Fourier series coefficient of f(t) analytically. Write an m-file that computes the sum of the exponential Fourier series terms from -N to N for-3 StS 3 for any value of N. Plot the sum for N-5, 10, 50, 100. Notice the behavior near discontinuities. Submit a printout of the m-file and the four plots