Hello can you please help me with question 1 and question 2:

N = 12 ;

n = 0:1:N-1; M = 4; x = sin (2*pi*M.*n./N); [~,T0] = rat(M/N)

stem(n ,x) xlabel ('n'); ylabel ('y[n]'); title('discrete sinusoidal signal example');

Using the above MATLAB code:

Question 1: Modify the commands in the code above and change the value of M to M = 5, M = 7 and M = 10. Use subplot to plot the discrete sinusoid signal x[n] for the four cases (including the original M = 4 case).

Question 2: Explain how fundamental period of discrete-time sinusoidal signal can be calculated and calculate fundamental period for four cases in question 1.