The intention of the followingMatlab program is to plot 13 cycles of a 13-Hz sinusoid, but it has a bug.
Fo = 13;To = 1/Fo; %-- PeriodTs = 0.07;tt = 0 : Ts : (13*To);xx = real(exp(j*(2*pi*Fo*tt - pi/2)));%plot( tt, XX )xlabel('TIME (sec)'), grid on(a) Draw a sketch of the plot that will be produced by Matlab. Explain how aliasing or folding affects the plot that you see. In particular, what is the period in the plot, and how many periods do you observe?
(b) Determine an acceptable value of Ts to get a very smooth plot of the desired 13 Hz signal.
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