Graph help in matlab

I need matlab code of this graph according to these conditions;

if the r value is lower than r1 and above than 0 use the formula L1.

if the r value between r1 and r2 use the formula L2.

if the r value greater than r2 use the formula L3.

Would you help me please?

Answer 1

[Star Strider]

This is not your function, however it illustrates the ‘logical indexing’ approach to such problems:

f = @(x) (2-2*x).*(x <= 0) + (2+2*x).*(x>0);

t = linspace(-3, 3);

figure
plot(t, f(t))
grid
ylim([0 max(ylim)])

Run it and view the plot it produces.

It is not difficult to figure out how it works. Be inspired by it!