Use the Matrix Capabilities of a Graphing Utility to Find $A B$

question 119

Multiple Choice

Use the matrix capabilities of a graphing utility to find $A B$ , if possible.
$A = \left[ \begin{array} { c c c } - 7 & 5 & 2 \\0 & 1 & 8 \\2 & 8 & - 2\end{array} \right] , B = \left[ \begin{array} { c c c } 4 & 3 & - 9 \\- 4 & - 1 & - 3 \\9 & 8 & 1\end{array} \right]$

• A) \(\left[ \begin{array} { c c c } - 28 & 15 & - 18 \\ 0 & - 1 & - 24 \\ 18 & 64 & - 2 \end{array} \right]\)
• B) \(\left[ \begin{array} { c c c } - 66 & - 42 & 46 \\ - 76 & - 65 & - 11 \\ - 6 & 14 & - 40 \end{array} \right]\)
• C) \(\left[ \begin{array} { c c c } - 30 & 68 & - 42 \\ - 10 & 63 & - 18 \\ 50 & 5 & - 44 \end{array} \right]\)
• D) \(\left[ \begin{array} { c c c } - 30 & - 10 & 50 \\ 68 & 63 & 5 \\ - 42 & - 18 & - 44 \end{array} \right]\)
• E) not possible

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