Use the Matrix Capabilities of a Graphing Utility to Find

question 65

Multiple Choice

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

• A) \(\left[ \begin{array} { c c c }
• - 35 & 2 & 81 \\
• - 5 & - 35 & - 49 \\
• 9 & - 35 & 7
• \end{array} \right]\)
• B) \(\left[ \begin{array} { c c c }
• - 27 & - 80 & 101 \\
• 23 & 24 & - 129 \\
• 57 & - 10 & - 123
• \end{array} \right]\)
• C) \(\left[ \begin{array} { c c c }
• - 45 & 37 & 59 \\
• 46 & - 74 & - 24 \\
• - 25 & - 31 & - 109
• \end{array} \right]\)
• D) \(\left[ \begin{array} { c c c }
• - 45 & 46 & - 25 \\
• 37 & - 74 & - 31 \\
• 59 & - 24 & - 109
• \end{array} \right]\)
• E)not possible

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