Exercise · ZW-MATRIX-001 · ★☆☆ Basic
What is the size of the matrix \(A=\begin{pmatrix}1&2&3\\4&5&6\end{pmatrix}\)?
Choose one option.
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- C. \(2\times 3\)
Explanation
Size is given as rows × columns. \(A\) has 2 rows and 3 columns, so its size is \(2\times 3\).
Review the concept: Matrix
A matrix \(A\) is a rectangular array of numbers arranged in rows and columns; with \(m\) rows and \(n\) columns, it has size \(m\times n\).
\[A=\begin{pmatrix}a_{11}&\cdots&a_{1n}\\ \vdots&\ddots&\vdots\\ a_{m1}&\cdots&a_{mn}\end{pmatrix}\]
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