I just am unsure of the correct syntax for plotting a signal with unit step. This is what I have so far. It gives me an error saying incorrect dimensions but I don't know where to put . for multiplying.
clear all; close all; clc;
syms t t0
u(t) = piecewise(t<t0, 0, t>=t0, 1);
t = -10:1:10;
xt = (t+2)*u(t+2)-(2*t*u(t))+((2*(t-4)+2)*u(t-4));
title('x(t) = (t+2)*u(t+2)-(2*t*u(t))+((2*(t-4)+2)*u(t-4))')