A matrix is a rectangular array of numbers arranged in rows and columns. Matrices are fundamental in linear algebra, used for solving systems of equations, 3D computer graphics, machine learning (neural networks), quantum mechanics, and engineering.
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Pro Tip
Matrix multiplication is NOT commutative: AB ≠ BA in general. Always check the order matters for your application.
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Did You Know?
The word "matrix" was coined by mathematician James Joseph Sylvester in 1850. In 3D computer graphics, every rotation, scaling, and translation of objects on your screen is performed using matrix multiplication.
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