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Matrices

★★☆☆☆Middle School

📖Definition

A rectangular array of numbers, used to represent linear transformations and systems of equations.

A = \beginpmatrix a₁₁ & a₁₂ \\ a₂₁ & a₂₂ \endpmatrix

2×2 matrix notation

A_m × n

m rows by n columns matrix

예제 1★☆☆☆☆

Find the (2, 1) entry of A = [[1, 2], [3, 4]].

Transformation matrices

Data representation

#linear-algebra#matrix#fundamental