Day 5 · Understanding Matrices and Their Types

A matrix is a rectangular array of numbers arranged in rows and columns! It is written inside large brackets, like A = [[1,2],[3,4]].

The order of a matrix tells us rows x columns — a matrix with 2 rows and 3 columns has order 2x3.

A square matrix has an equal number of rows and columns. An identity matrix is a square matrix with 1s on the main diagonal and 0s everywhere else.

Activity: Try writing out a 3x3 identity matrix yourself.