Question
Given $\left[\begin{array}{cc}2 & 1 \\ -3 & 4\end{array}\right], X=\left[\begin{array}{l}7 \\ 6\end{array}\right]$ the order of the matrix $X$
✓
Answer
We have
$\left[\begin{array}{cc} 2 & 1 \\-3 & 4\end{array}\right], X =\left[\begin{array}{l}7 \\6\end{array}\right]$
We see that $2 \times 2 \times 2 \times 1=2 \times 1$
$\Rightarrow$ The order of $X$ is $2 \times 1$.
$\left[\begin{array}{cc} 2 & 1 \\-3 & 4\end{array}\right], X =\left[\begin{array}{l}7 \\6\end{array}\right]$
We see that $2 \times 2 \times 2 \times 1=2 \times 1$
$\Rightarrow$ The order of $X$ is $2 \times 1$.
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