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Level 2 Certificate Mathematics · key term
A rectangular array of numbers or letters arranged in rows and columns.
Used by AQA
Specification 5.1 · Paper 1, Paper 2
Revise: Matrix MultiplicationA matrix is a rectangular array of numbers or letters, enclosed in brackets. Each number or letter is an element. Rows run horizontally and columns run vertically.
Write the order of a matrix as rows × columns, not columns × rows.
For matrix multiplication, show each entry as a sum of two products. Do not simply multiply entries in matching positions.
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