Multiply Matrices

-$A = \left[ \begin{array} { r r } - 1 & 3 \ 1 & 6 \end{array} \right] , B = \left[ \begin{array} { l l l } 0 & - 2 & 5 \ 1 & - 3 & 2 \end{array} \right]$

A)
$$\left[ \begin{array} { r r r }
3 & - 7 & 1 \
6 & - 20 & 17
\end{array} \right]$$
B) $\mathrm { AB }$ is not defined.
C)
$\left[ \begin{array} { r r } 3 & 6 \ - 7 & - 20 \ 1 & 17 \end{array} \right]$
D)
$\left[ \begin{array} { c c c } 0 & - 6 & 15 \ 1 & - 18 & 12 \end{array} \right]$

Question

Multiply Matrices

-$A = \left[ \begin{array} { r r } - 1 & 3 \ 1 & 6 \end{array} \right] , B = \left[ \begin{array} { l l l } 0 & - 2 & 5 \ 1 & - 3 & 2 \end{array} \right]$

A)
$$\left[ \begin{array} { r r r } 
3 & - 7 & 1 \
6 & - 20 & 17
\end{array} \right]$$
B) $\mathrm { AB }$ is not defined.
C)
$\left[ \begin{array} { r r } 3 & 6 \ - 7 & - 20 \ 1 & 17 \end{array} \right]$
D)
$\left[ \begin{array} { c c c } 0 & - 6 & 15 \ 1 & - 18 & 12 \end{array} \right]$

Quizplus · Accepted Answer

Matrix multiplication is defined for A (2x2) and B (2x3), resulting in a 2x3 matrix. The correct multiplication yields the matrix in option A.

Multiply Matrices - A) [3−716−2017]\left[ \begin{array} { r r r } 3 & - 7 & 1 \\6 & - 20 & 17\end{array} \right][36​−7−20​117​]

Multiply Matrices

- A) $\left[ \begin{array} { r r r } 3 & - 7 & 1 \\6 & - 20 & 17\end{array} \right]$