How to generate a $30\times30$ matrix $A$ where the elements of the matrix are randomly taken from $[-0.2, 0.2]$. I am beginner in matlab.  
I want to generate a  a $30\times30$ matrix $A$ where the elements of the matrix are randomly taken from $[-0.2, 0.2]$. 
I am not able to make code for this? Could anybody help me with this?
Question might be very elementary.Please forgive me for that.
Thanks 

To generate an $n \times m$ matrix with random entries from the interval $[a, b]$:

m = a + (b-a).*rand(n, m);

See the help page for rand: http://www.mathworks.com/help/techdoc/ref/rand.html
