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Mathematics
Key terms
Identity matrix

Level 2 Certificate Mathematics · key term

Identity matrix

Definition

A square matrix that leaves a matrix unchanged when multiplied by it. In this course, $I=\begin{pmatrix}1&0\\0&1\end{pmatrix}$ .

How each exam board covers it

AQA Level 2 Certificate Further Mathematics · 8365

Specification 5.2 · Paper 1, Paper 2

The identity matrix plays the same role in matrix multiplication.
Revise: Identity Matrix

AQA Further Mathematics past papers

Related key terms

Element
Scalar multiple

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Identity matrix — AQA Level 2 Certificate Further Maths Definition

01

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Used by AQA