Addition of two sinusoids

% Addition of two sinusoidal sequence x= sin(0.2*pi*n) + sin (0.5*pi*n)

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

N=50;

n=0:1:N-1;

xn= sin(0.3*pi.*n) + sin(0.7*pi.*n);

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

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

xlabel('n');

ylabel('xn');

title('Addition of two Sinusoidal Sequence');