%%Note: here is the MatLab code for the function c(t)

clc

clear all;

close all;

t=[-3:0.01:3];

a=tripuls (t+1,4);

a=2*a;

c=(3/2)*a;

plot(t,c,'r');

grid minor;

xlabel("time (s)");

ylabel("signals");

title("signals vs time");

axis([-3, 3, 0, 4]);

u(t) is a step-function

Plot the following signal e(t) 2 e(t) = * c(t) * (a(t + 2)-u(t)) + cos(2 * pi * t) * (a(t)-u(t-1) 3