x=linspace(-5,5);
f=sinc(x);
g=.5*sinc(x)+.25*sinc(x-1)+.25*sinc(x+1);
h=sinc(x)+sinc(x-1)+sinc(x+1);


plot(x,f,x,g);

%j=cos(4*pi*x);
%ws2=w2.*j;
%ws1=w1.*j;
%fws2=fft(ws2.*j);
%fws1=fft(ws1);
%fs=fft(j);
%plot(x,real(fws),x,fs,x,real(fws2));
legend('Transform of Rect','Transform of Cos(pi*t)^2');
xlabel('s');ylabel('F(s)');