Compute AB, if possible.
-$A = \left[ \begin{array} { l l l } - 8 & 2 & 4 \end{array} \right]$ and $B = \left[ \begin{array} { r } 5 \ 0 \ - 3 \end{array} \right]$
A) $[ - 52 ]$
B) $[ 154 ]$
C) $\left[ \begin{array} { r } - 40 \ 0 \ - 12 \end{array} \right]$
D) $\left[ \begin{array} { l l l } - 40 & 0 & - 12 \end{array} \right]$

Question

Quizplus · Accepted Answer

The product of a $1 \times 3$ matrix $A$ and a $3 \times 1$ matrix $B$ is a $1 \times 1$ matrix, calculated as $(-8 \times 5) + (2 \times 0) + (4 \times -3) = -40 - 12 = -52$.

Compute AB, If Possible A=[−824]A = \left[ \begin{array} { l l l } - 8 & 2 & 4 \end{array} \right]A=[−8​2​4​]

Compute AB, If Possible $A = \left[ \begin{array} { l l l } - 8 & 2 & 4 \end{array} \right]$