if matrix A= ( 1 2 3 ), write AA', where A' is the transpose of matrix A.

So A' = $\left[\begin{array}{c}1\\ 2\\ 3\end{array}\right]$

So AA' = [ 1 2 3] $\left[\begin{array}{c}1\\ 2\\ 3\end{array}\right]$ = 1 + 4 +13 = [14]

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if matrix A= ( 1 2 3 ), write AA', where A' is the transpose of matrix A.

So A' = $\left[\begin{array}{c}1\\ 2\\ 3\end{array}\right]$

So AA' = [ 1 2 3] $\left[\begin{array}{c}1\\ 2\\ 3\end{array}\right]$ = 1 + 4 +13 = [14]

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