Maths Dictionary · SS 3
Matrix (matrices)
Simple meaning
A rectangle of numbers set out in rows and columns, inside brackets.
Example
2103 is a 2 × 2 matrix.
See it
From the Matrix Operations lesson. Try moving things around.
A =
B =
Selected entry of B1
AB =
Row 1 of A × column 1 of B: 2 × 1 + 1 × 2 = 2 + 2 = 4
Tap an answer entry to see how it was made.
AB ≠ BA here: switch between AB and BA to compare.