//ZAD 1.
clear
clc
n=0:1:15;
A1=4.5;
x1=A1*sin(2*%pi*n/16);
subplot(4,2,1)
plot(n,x1)

A2=3;
W=6;
x2=A2*sin(W*%pi*n/16);
subplot(4,2,2)
plot(n,x2)

x3=x1+x2;
subplot(4,2,3)
plot(n,x3)

x4=x1-x2;
subplot(4,2,4)
plot(n,x4)



n=0:1:255;
A1=4.5;
y1=A*sin(2*%pi*n/256);
subplot(4,2,5)
plot(n,y1)

A2=3;
W=6;
y2=A2*sin(W*%pi*n/256);
subplot(4,2,6)
plot(n,y2)

y3=y1+y2;
subplot(4,2,7)
plot(n,y3)

y4=y1-y2;
subplot(4,2,8)
plot(n,y4)

//ZAD 2.
figure
x5=fft(x3)
subplot(2,1,1)
plot(n,x5)

x6=fft(x4)
subplot(2,1,2)
plot(n,x6)