MATLAB: How to do convolution Of this x1 and x10 function

fs=100;
Ts=1/fs;
t= [-1:Ts:3];
x1 = 2*rectpuls(t-0.5);
figure(1);
plot(t,x1);
axis ([-1 3 -1 3]);
xlabel ('time(sec)')
ylabel ('2rect(t-0.5)')
title ('f(t)')
x10 = 0.5*rectpuls(0.5*t -0.5);
figure(2);
plot(t,x10);
axis ([-1 3 -1 3]); 
xlabel ('time(sec)')
ylabel ('0.5rect(0.5t-0.5')
title ('g(t)')