Chapter 2.2, Problem 27P

For Problems 26-27, let

$A=\left[\begin{array}{ccc}-3& -1& 6\end{array}\right]$, $B=\left[\begin{array}{cc}0& -4\\ -7& 1\\ -1& -3\end{array}\right]$,

$C=\left[\begin{array}{cccc}-9& 0& 3& -2\\ 1& 1& 5& -2\end{array}\right]$, $D=\left[\begin{array}{ccc}-2& 1& 5\\ 0& 0& 7\\ 1& -2& -1\end{array}\right]$

For each item, decide whether or not the given expression is defined. For each item tat is defined, compute the result.

(a) $A{D}^T$

(b) ${\left(C^{T}C\right)}^2$

(c) $D^{T}B$