Find the dimension of matrix A. $A = \left[ \begin{array} { l l l }
- 1 & 2 & - 3 \
4 & - 5 & 6
\end{array} \right]$
A) $2 \times 3$
B) $2 \times 4$
C) $3 \times 2$
D) $1 \times 3$
E)none

Question

Find the dimension of matrix A. $A = \left[ \begin{array} { l l l } 
- 1 & 2 & - 3 \
4 & - 5 & 6
\end{array} \right]$
A) $2 \times 3$
B) $2 \times 4$
C) $3 \times 2$
D) $1 \times 3$
E)none

Quizplus · Accepted Answer

The dimension of a matrix is given by the number of rows by the number of columns. Matrix A has 2 rows and 3 columns, so its dimension is $2 \times 3$.

Find the Dimension of Matrix A A=[−12−34−56]A = \left[ \begin{array} { l l l } - 1 & 2 & - 3 \\4 & - 5 & 6\end{array} \right]A=[−14​2−5​−36​]

Find the Dimension of Matrix A $A = \left[ \begin{array} { l l l } - 1 & 2 & - 3 \\4 & - 5 & 6\end{array} \right]$