Finding the Bug

In this particular code, Ts is equal to 1/13. Which points that it will only draw 14 points and it is way too little for making a graph. In order to fix it, we need to give more points by giving points more frequently by decreasing Ts (time period).

F0 =13;
T0 =1/F0;
Ts = 0.000001; % It was 0.07 before
t  = 0:Ts:13*T0;
x = real(exp(j*(2*pi*F0*t-pi/2)));
plot(t,x)