Basic Waves in Discrete Time Domain

close all;
clear all;
clc;
t=0:0.001:2;
f=1;
w=2*pi*f;
a=sint(w*t);
subplot(2,2,1);
stem(t,a);
xlabel('time');
ylabel('amplitude');
title('sinusoidal signal');
b=cos(w*t);
subplot(2,2,2);
stem(t,b);
xlabel('time');
ylabel('amplitude');
title('co-sinusoidal signal');
c=square(w*t);
subplot(2,2,3);
stem(t,c);
xlabel('time');
ylabel('amplitude');
title('square signal');
d=sawtooth(w*t);
subplot(2,2,2);
stem(t,d);
xlabel('time');
ylabel('amplitude');
title('sawtooth signal');