Find the matrix product, if possible. $\left[ \begin{array} { c c }
1 & 4 \
- 1 & 3 \
1 & 1
\end{array} \right] \cdot \left[ \begin{array} { l l l }
5 & 1 & 1 \
1 & 4 & 3
\end{array} \right]$
A) $\left[ \begin{array} { c c c }
9 & 17 & 13 \
- 2 & 11 & 8 \
6 & 5 & 4
\end{array} \right]$
B) $\left[ \begin{array} { c c c }
9 & 17 & 13 \
2 & 11 & 8 \
6 & 5 & 4
\end{array} \right]$
C) $\left[ \begin{array} { c c c }
9 & 17 & 13 \
2 & - 11 & 8 \
6 & 5 & 4
\end{array} \right]$
D) $\left[ \begin{array} { c c }
5 & 4 \
- 1 & 9
\end{array} \right]$
E) Undefined

Question

Find the matrix product, if possible.   $\left[ \begin{array} { c c } 
1 & 4 \
- 1 & 3 \
1 & 1
\end{array} \right] \cdot \left[ \begin{array} { l l l } 
5 & 1 & 1 \
1 & 4 & 3
\end{array} \right]$  
A) $\left[ \begin{array} { c c c } 
9 & 17 & 13 \
- 2 & 11 & 8 \
6 & 5 & 4
\end{array} \right]$
B)   $\left[ \begin{array} { c c c } 
9 & 17 & 13 \
2 & 11 & 8 \
6 & 5 & 4
\end{array} \right]$
C) $\left[ \begin{array} { c c c } 
9 & 17 & 13 \
2 & - 11 & 8 \
6 & 5 & 4
\end{array} \right]$
D) $\left[ \begin{array} { c c } 
5 & 4 \
- 1 & 9
\end{array} \right]$
E) Undefined

Quizplus · Accepted Answer

The product of the two matrices is calculated by multiplying rows of the first matrix by columns of the second matrix. The correct product is $\left[ \begin{array} { c c c } 9 & 17 & 13 \ - 2 & 11 & 8 \ 6 & 5 & 4 \end{array} \right]$, which matches option A.

Find the Matrix Product, If Possible A) [91713−2118654]\left[ \begin{array} { c c c } 9 & 17 & 13 \\- 2 & 11 & 8 \\6 & 5 & 4\end{array} \right]​9−26​17115​1384​​

Find the Matrix Product, If Possible A) $\left[ \begin{array} { c c c } 9 & 17 & 13 \\- 2 & 11 & 8 \\6 & 5 & 4\end{array} \right]$