t=[-4:0.2:4];
n=[-2:0.1:2];
subplot(3,2,1)
plot(t,heaviside(t-3))
grid on;
title('Time shifted signal')
xlab...

### Hi ,please help , I need to plot signals u(t-3),u (t+1), z(-t-3),,z(2t+2),u(-2n-1) and u(3n+2) using subplot and add title ,grid and axis labels