What is a matrix

May 6, 2026Mathematics

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A matrix is a rectangular array of numbers, symbols, or expressions arranged in rows and columns. It is used to represent mathematical objects and to perform operations like solving systems of linear equations or transforming coordinates.

For example, a $2 \times 3$ matrix (2 rows and 3 columns) looks like this:

\begin{bmatrix} a & b & c \\ d & e & f \end{bmatrix}

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