Matrix Operations and Their Applications
1 Use Matrix Notation
-$$\left[ \begin{array} { r c c c }
- 8 & 2 & - 1 & 0 \
5 & - 9 & - 2 & 4
\end{array} \right] ; \mathrm { a } _ { 12 }$$
A) $2 \times 4 ; 2$
B) $4 \times 2 ; 2$
C) $2 \times 4 ; 5$
D) $4 \times 2 ; 5$

Question

Matrix Operations and Their Applications
1 Use Matrix Notation
-$$\left[ \begin{array} { r c c c } 
- 8 & 2 & - 1 & 0 \
5 & - 9 & - 2 & 4
\end{array} \right] ; \mathrm { a } _ { 12 }$$
A) $2 \times 4 ; 2$
B) $4 \times 2 ; 2$
C) $2 \times 4 ; 5$
D) $4 \times 2 ; 5$

Quizplus · Accepted Answer

The matrix has 2 rows and 4 columns, making it a $2 \times 4$ matrix. The element $a_{12}$ refers to the element in the first row, second column, which is $2$.

Matrix Operations and Their Applications 1 Use Matrix Notation - [−82−105−9−24];a12\left[ \begin{array} { r c c c } - 8 & 2 & - 1 & 0 \\5 & - 9 & - 2 & 4\end{array} \right] ; \mathrm { a } _ { 12 }[−85​2−9​−1−2​04​];a12​

Matrix Operations and Their Applications
1 Use Matrix Notation
- $\left[ \begin{array} { r c c c } - 8 & 2 & - 1 & 0 \\5 & - 9 & - 2 & 4\end{array} \right] ; \mathrm { a } _ { 12 }$