Compute the indicated products left[begin{arr | vedclass

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(A) To multiply the two matrices,we perform row-by-column multiplication:$\left[\begin{array}{cc}1 & -2 \ 2 & 3\end{array}ight]\left[\begin{array}{

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$\left[\begin{array}{ccc}-3 & -4 & 1 \ 8 & 13 & 9\end{array}ight]$

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(A) To multiply the two matrices,we perform row-by-column multiplication:$\left[\begin{array}{cc}1 & -2 \ 2 & 3\end{array}ight]\left[\begin{array}{ccc}1 & 2 & 3 \ 2 & 3 & 1\end{array}ight]$$= \left[\begin{array}{ccc}1(1) + (-2)(2) & 1(2) + (-2)(3) & 1(3) + (-2)(1) \ 2(1) + 3(2) & 2(2) + 3(3) & 2(3) + 3(1)\end{array}ight]$$= \left[\begin{array}{ccc}1 - 4 & 2 - 6 & 3 - 2 \ 2 + 6 & 4 + 9 & 6 + 3\end{array}ight]$$= \left[\begin{array}{ccc}-3 & -4 & 1 \ 8 & 13 & 9\end{array}ight]$

Compute the indicated products $\left[\begin{array}{cc}1 & -2 \\ 2 & 3\end{array}\right]\left[\begin{array}{lll}1 & 2 & 3 \\ 2 & 3 & 1\end{array}\right]$

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