Matrices
a)Since D has \(3\) rows and \(2\) columns,
\(\therefore \) D has order \(3\times 2\)
\(\begin{aligned} b)\hspace{1mm} &d_{11}=-2\end{aligned}\)
\(\because\) \(d_{11}\) is the element at the first row and first column.
\(\begin{aligned}d_{21}=0\end{aligned}\)
\(\because\) \(d_{21}\) is the element at the second row and first column.
\(\begin{aligned} d_{32}=9\end{aligned}\)
\(\because\) \(d_{32}\) is the element at the third row and second column.
\(\begin{aligned} \begin{bmatrix} a&b\\ c&d \end{bmatrix} = \begin{bmatrix} e&f\\ g&h \end{bmatrix} \end{aligned}\)
\(\begin{aligned} \implies a&=e, \\b&=f,\\c&=g,\\d&=h \end{aligned}\)
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