and Ab Use the matrix column representation of the product to write each column of AB as a linear combination of the columns of A Ab 2 11 Ab 3 1 2 2 A 3 1 1 20 1 B AB 3 2 30 1 1 1 1 2 4 6 X HO El Give the final product AB DEL 1 12 1 6 5 BOH i 2 i G 2 6 5 1 12 8 00 6 5 T