Perform Scalar Multiplication
-Let $B = \left[ \begin{array} { l l l l } - 1 & 6 & 6 & - 3 \end{array} \right]$. Find $- 3 B$.
A) $\left[ \begin{array} { l l l } 3 & - 18 & - 18 \end{array} \right.$]
B) $\left[ \begin{array} { l l l } 3 & 6 & 6 \end{array} \right.$]
C) $[ - 3 18 18 - 9 ]$
D) $[ - 3 44 - 5 ]$

Question

Quizplus · Accepted Answer

Scalar multiplication involves multiplying each element of the matrix by the scalar. Here, multiplying each element of $B$ by $-3$ results in $\left[ 3, -18, -18, 9 \right]$, which matches choice A after correcting for the apparent typo in the options.

Perform Scalar Multiplication -Let B=[−166−3]B = \left[ \begin{array} { l l l l } - 1 & 6 & 6 & - 3 \end{array} \right]B=[−1​6​6​−3​]

Perform Scalar Multiplication
-Let $B = \left[ \begin{array} { l l l l } - 1 & 6 & 6 & - 3 \end{array} \right]$