More Algebra

What are some examples of a matrix?

The dimensions of a matrix are the number of rows (horizontal numbers) and columns (vertical numbers); it is written as the rows first, columns second. The following are some simple examples of matrices—all differing in dimensions:

A 3 by 2 (3 × 2) matrix:


A 2 by 3 (2 × 3) matrix:


A 4 by 4 (4 × 4) matrix (when the row and column dimensions are the same, it is called a “square matrix”):



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