repeat an element in a vector

Hi all,

I have one vector and i wish to repeat the first element of the vector once at the very beginning.

For example:

n = [1 2 3 4 5 6 7 8 9]

to

n = [1 1 2 3 4 5 6 7 8 9]

Thank you all.

[Sriram Tadavarty]

how about using

n = [n(1) n];

Answer 1

[Birdman]

[n(1) n]

or

[repmat(n(1),1) n]