Hey ak786.

This operation takes two matrices and augments them column-wise. To use an example from Octave:

>> >> A = [0,1,2;3,4,5;6,7,8]

A =

0 1 2

3 4 5

6 7 8

>> X = [1;2;3]

X =

1

2

3

>> B = [A, X]

B =

0 1 2 1

3 4 5 2

6 7 8 3

Note the requirement with the number of rows for each matrix.