Chapter 11.0A, Problem 25E

To determine

(a)

To find:

The product $CG$ of the matrices $C=\left[\begin{array}{c}23\\ 41\end{array}\right]$ and $G=\left[\begin{array}{ccc}12& -11& 5\\ -9& 4& 0\\ 1& 9& 5\end{array}\right]$, if it exists.

To determine

(b)

To find:

The product $GC$ of the matrices $G=\left[\begin{array}{ccc}12& -11& 5\\ -9& 4& 0\\ 1& 9& 5\end{array}\right]$ and $C=\left[\begin{array}{c}23\\ 41\end{array}\right]$, if it exists.