Find the Indicated Matrix $C = \left[ \begin{array} { r } 1 \\ - 3 \\ 2 \end{array} \right]$

question 90

Multiple Choice

Find the indicated matrix.
-Let $C = \left[ \begin{array} { r } 1 \\ - 3 \\ 2 \end{array} \right]$ and $D = \left[ \begin{array} { r } - 1 \\ 3 \\ 2 \end{array} \right]$ . Find $C - 2 D$

• A) \(\left[ \begin{array} { r } - 3 \\ 9 \\ 2 \end{array} \right]\)
• B) \(\left[ \begin{array} { r } 3 \\ - 6 \\ 4 \end{array} \right]\)
• C) \(\left[ \begin{array} { r } - 1 \\ 3 \\ - 2 \end{array} \right]\)
• D) \(\left[ \begin{array} { r } 3 \\ - 9 \\ - 2 \end{array} \right]\)

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A principle of economics that allows an entity to produce a good or perform a service at a lower opportunity cost than its competitors.

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