Sinusoidal sequence cos(0.2*pi*n)

% Plot an sinusoidal sequence cos(0.2*pi*n) and level it.

% *******************************************************

N=50;

n=0:1:N-1;

xn=cos(0.2*pi.*n);

subplot(2,2,1),stem(n,xn);

subplot(2,2,2),plot(n,xn);

xlabel('n');

ylabel('xn');

title('Sinusoidal Sequence');

xn=sin(0.2*pi.*n);

subplot(2,2,3),stem(n,xn);

subplot(2,2,4),plot(n,xn);

xlabel('n');

ylabel('xn');

title('Sinusoidal Sequence');