Plotting two linear equations

Hi. How can i plot this equation between (-5,2) values

f(x) =

• -1 ----> x<-1
• x^2+x ------> -1 <= x < 2

Answer 1

[Star Strider]

Use ‘logical indexing’:

x = linspace(-5,2);
f = @(x) (-1).*(x < -1) + (x.^2 + x).*((x >= -1) & (x < 2));

figure(1)
plot(x, f(x))
grid

[Sam Oznc]

Thank you so much

[Star Strider]

As always, my pleasure.