plot this alternative function

how could i alternative my function? here is my code:

clc
clear all

t=-5:0.01:5;

f=(t+2).*(t>-2)-(t+2).*(t>-1)+(1).*(t<=1)-(1).*(t<=-1)+(2-t).*(t>1)-(2-t).*(t>=2)

figure (1)
plot (t,f);


axis([-6,6,-1,3])

the correct shape and my shape:

Answer 1

[Steven Lord]

Are you certain you've implemented the formula correctly? Your expected result has a very different value for t = -5 than for t = -3, but none of the logical terms in your code differ in value for t = -5 and t = -3 and none of the numeric terms by which those logical terms are multiplied depend upon t.

For t = -3, your function evaluates to 1-1. The following terms are the only ones that are something times true.

(1).*(t<=1)-(1).*(t<=-1)

For t = -5, your function evaluates to 1-1. The following terms are the only ones that are something times true.

(1).*(t<=1)-(1).*(t<=-1)