Matrix
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Definition
A matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.
Usage
Matrices are often used to represent linear transformations and solve systems of linear equations.
Examples
-
2x2 matrix
A = \begin{bmatrix} a & b \\ c & d \end{bmatrix} -
Matrix multiplication
AB = \begin{bmatrix} a & b \\ c & d \end{bmatrix} \begin{bmatrix} e & f \\ g & h \end{bmatrix}