Compute the product of the two matrices (if possible).

$\left[ \begin{array} { l l l }
4 & 5 & - 1
\end{array} \right] \cdot \left[ \begin{array} { c }
- 2 \
3 \
8
\end{array} \right]$
A) $[ - 1 ]$
B) $[ - 0 ]$
C) $[ 1 ]$
D) $[ 0 ]$
E) Not possible

Question

Compute the product of the two matrices (if possible).

$\left[ \begin{array} { l l l } 
4 & 5 & - 1
\end{array} \right] \cdot \left[ \begin{array} { c } 
- 2 \
3 \
8
\end{array} \right]$  
A) $[ - 1 ]$
B) $[ - 0 ]$
C) $[ 1 ]$
D) $[ 0 ]$
E) Not possible

Quizplus · Accepted Answer

The product of the two matrices is computed as $4(-2) + 5(3) + (-1)(8) = -8 + 15 - 8 = -1$, which matches choice A.

Compute the Product of the Two Matrices (If Possible) [45−1]⋅[−238]\left[ \begin{array} { l l l } 4 & 5 & - 1\end{array} \right] \cdot \left[ \begin{array} { c } - 2 \\3 \\8\end{array} \right][4​5​−1​]⋅​−238​​

Compute the Product of the Two Matrices (If Possible) $\left[ \begin{array} { l l l } 4 & 5 & - 1\end{array} \right] \cdot \left[ \begin{array} { c } - 2 \\3 \\8\end{array} \right]$