FP1.5.5 - Inverse of 2 × 2 matrices

Inverse of 2 × 2 matrices.; Use of the relation (AB)–1 = B–1A–1.

Use fp1.5.5 - inverse of 2 × 2 matrices to connect the rule to the data and decision in the question.

This matters because fp1.5.5 - inverse of 2 × 2 matrices determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply fp1.5.5 - inverse of 2 × 2 matrices to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: FP1.5.5 - Inverse of 2 × 2 matrices is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.