How to Multiply a number to a row of matrix

For example i have matrix

      A = [ 1 2 3 ; 3 4 5] 
I want to multiply 2 to the 2nd row of the matrix so i got

      A = [ 1 2 3 ; 6 8 10]

Answer 1

[Star Strider]

Use bsxfun to multiply the first row by 1 (so it remains the same), and the second row by 2:

A = [ 1 2 3 ; 3 4 5];
A = bsxfun(@times, A, [1; 2])

A =
     1     2     3
     6     8    10

[Tran Thien]

Thank you very much :D

[Star Strider]

As always, my pleasure!

[akhil soni]

Thanks ...it helped me a lot:))

Answer 2

[David Wilson]

or if you have a recent version of Matlab, then one can avoid the cryptic bxfun with

>> A.*[1;2]