time index nnt = ( DC value 5. a) Write MATLAB code to sketch line spectrum (at least 6) for the following Fourier 01 COS C3 series f0 +cos -> ] Complex wave b) Create a user defined function in MATLAB to construct a complex wave f(t) in the 1.5 C05 C3 time interval of [-4,20] for the following Fourier series AC value Page 1 of 2 f(0) = 2 = 1 0.5 005 C3 3 1 1 -+[cost+cos3t+cos 5t +..............] 2 32 c) If x[n]=1 ; n=0 h[n] = 3; n=0 and = 3; n=1 1; n=1 Write MATLAB code to find the convolution sum for the above discrete signals