Generate a random number in a certain range in MAT

Question

How can I generate a random number in MATLAB between 13 and 20?

Answer 1

http://www.mathworks.com/help/techdoc/ref/rand.html

n = 13 + (rand(1) * 7);

Answer 2

r = 13 + 7.*rand(100,1);

Where 100,1 is the size of the desidered vector

Answer 3

if you need a floating random number between 13 and 20

(20-13).*rand(1) + 13

if you need an integer random number between 13 and 20

floor((20-13).*rand(1) + 13)