Mathematics A-Level
one-to-one mapping
What one-to-one mapping means in Mathematics A-Level, as defined for WJEC.
Definition of one-to-one mapping
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Reference: WJEC
A condition under which an inverse function exists; if a function is not one-to-one, its domain must be restricted to define an inverse.
Topics that use one-to-one mapping
- Algebra and Functions (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- algebraic division
- cancelling factors
- domain restrictions
- equating coefficients
- extraneous solutions
- function modelling
- horizontal and vertical scaling
- improper fractions
Using one-to-one mapping in the exam
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