Error
The error in the code is that the sampling frequency Ts is too high. In the original code it only sampled enough to create two period.
Results
Here is what the graph looks like with the code corrected:
Code
Here is the code corrected:
F0 =13; T0 =1/F0; Ts = 0.005; %This is where the error was. The lower the sampling frequency the clearer the graph. t = 0:Ts:13*T0; x = real(exp(j*(2*pi*F0*t-pi/2))); plot(t,x)
