01. Introduction (MATLAB)

# generates the exponentially damped sinusoidal signal 
clear all;clc;
x =inline('5*sin(2*pi*1*t).*exp(-.4*t)','t');
t = (-10:.01:10);
plot(t,x(t));
xlabel ('t (seconds)');
ylabel ('Ámplitude');

# generates the unit step function over [5,5]
clear all;clc;
u=inline('(t>=0)','t');
t=-5:0.01:5;
plot(t,u(t))
xlabel ('t (seconds)');
ylabel ('Ámplitude')
axis([-5 5 -2 2])

 

# generate rectangular pulse function
clear all;clc;
u=inline('(t>=-5)& (t<5)','t');
t=-10:0.01:10;
plot(t,u(t))
xlabel ('t (seconds)');
ylabel ('Ámplitude')
axis([-10 10 -2 2])