The following  MATLAB code doesn't work properly since the step value, Ts, is too big.

'''Code Containing the "Bug"'''

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

However, by reducing the step size, the MATLAB routine will print all 13 cycles of the 13Hz sinusoid.
I chose to reduce the value by multiplying it by <math>10^-2</math>, which leaves us with Ts = 0.0007.
The proper working code is shown below:

'''Code After Reducing Ts Step Value'''

F0 =13; 
T0 =1/F0; 
Ts = 0.0007;
t  = 0:Ts:13*T0; 
x = real(exp(j*(2*pi*F0*t-pi/2)));
plot(t,x)

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