A 2×2 matrix is a rectangular array of four numbers arranged in 2 rows and 2 columns. Matrix operations including determinants, inverses, addition and multiplication are fundamental in linear algebra, computer graphics, and data science.
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Pro Tip
A matrix has an inverse only when its determinant is non-zero.
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Did You Know?
Matrix multiplication is non-commutative: A×B ≠ B×A in general — a key difference from scalar arithmetic.
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