Meaning of Function "size"

I want to know better the use of the function size. And if i have a matrix A of the type 4 x 2 what can mean if i write size(A,2)? Thanks a lot Bye Vito

Answer 1

[the cyclist]

If A is an M x N matrix, then

size(A,2)

gives the result N, because that is the size of the 2nd dimension of the matrix.