**Question **# Compute the matrix product A*B of the following pairs of matrices: \text { (a) } A=\left[\begin{array}{cc}
12 & 4 \\
3 & -5
\end{array}\right] \quad B=\left[\begin{array}{cc}
2 & 12 \\
0 & 0
\end{array}\right] \text { (b) } A=\left[\begin{array}{lll}
1 & 3 & 5 \\
2 & 4 & 6
\end{array}\right] \quad B=\left[\begin{array}{l}
-2 \\
3 \\
12
\end{array}\right] Show that A*B is not the same as B*A.