How to plot u(t) - u(t-2) on matlab

Help please I need to plot u(t) - u(t-2)

Answer 1

[Star Strider]

If ‘u(t)’ is the unit step (heaviside) function —

syms t 
u(t) = heaviside(t);

figure
fplot(u(t)-u(t-2), [0 5])
grid
xlabel('t')
ylabel('Amplitude')
axis('padded')

.

Answer 2

[Torsten]

u = rand(20,1);
du = u(3:end) - u(1:end-2);
plot(du)