Chapter 6.5, Problem 15E

To determine

To calculate: The product the matrices $\left[\begin{array}{rrr}\hfill 1& \hfill 0& \hfill 0\\ \hfill 0& \hfill 1& \hfill 0\\ \hfill 0& \hfill 0& \hfill 1\end{array}\right]$ and $\left[\begin{array}{rrr}\hfill 3& \hfill 5& \hfill 7\\ \hfill -2& \hfill 1& \hfill 6\\ \hfill 0& \hfill -3& \hfill 4\end{array}\right]$.