en.wikipedia.org/wiki/Matrix_(mathematics)

In mathematics, a matrix (plural matrices) is a rectangular array of numbers,
symbols, or expressions, arranged in rows and columns. For example, the ...

www.mathsisfun.com/algebra/matrix-introduction.html

Math explained in easy language, plus puzzles, games, quizzes, worksheets ...
Matrices. A Matrix is an array of numbers: A Matrix (This one has 2 Rows and 3 ...

www.khanacademy.org/math/precalculus/precalc-matrices/intro-to-matrices/v/introduction-to-the-matrix

Take the red pill and enter the Matrix! ... Next tutorial. Representing linear
systems of equations with augmented matrices. Current time:0:00Total duration:4
:29 ...

www.khanacademy.org/math/precalculus/precalc-matrices

Learn what matrices are and about their various uses: solving systems of
equations, transforming shapes and vectors, and representing real-world
situations.

www.coolmath.com/algebra/24-matrices/01-whats-a-matrix-01

You've already seen glimpses of matrices -- determinants (for Cramer's Rule) and
Gaussian elimination... Now, we'll see what else we can do with them.

www.sosmath.com/matrix/matrix.html

Application of Invertible Matrices: Coding · Complex numbers as Matrices ·
Markov Chains. Systems of Linear Equations. System of Equations: An
Introduction ...

www.sosmath.com/matrix/matrix0/matrix0.html

Matrices, though they may appear weird objects at first, are a very important tool
in expressing and discussing problems which arise from real life cases. Our first ...

www.maths.surrey.ac.uk/explore/emmaspages/option1.html

Introduction and Examples; Matrix Addition and Subtraction; Matrix Multiplication;
The Transpose of a Matrix; The Determinant of a Matrix; The Inverse of Matrix ...

www.purplemath.com/modules/matrices.htm

Defines matrices and basic matrix terms, illustrating these terms with worked
solutions to typical homework exercises.

mathworld.wolfram.com/Matrix.html

In particular, every linear transformation can be represented by a matrix, and
every matrix corresponds to a unique linear transformation. The matrix, and its ...