Mathematics A-Level
one-to-one functions
What one-to-one functions means in Mathematics A-Level, as defined for WJEC.
Definition of one-to-one functions
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Reference: WJEC
A function is one-to-one (injective) if distinct inputs yield distinct outputs.
Topics that use one-to-one functions
Related terms
- Domain
- domain and range
- Function
- Identity
- Intersection
- inverse functions
- Logarithm
- mathematical idealisations
Using one-to-one functions in the exam
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