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GCSE Mathematics · key term
The value produced when a function acts on an input.
Used by Edexcel and OCR
Specification A7 · Paper 1, Paper 2, Paper 3
The value produced when a function's rule is applied to an input.
Revise: Introduction to Function NotationA function is a rule that gives exactly one output for each allowed input.
The value produced by a function.
Distinguish carefully between , which asks for an output, and , which gives an output and asks you to find the input value or values.
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Specification 6.05a · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Revise: Function NotationSuppose you know the output 13 and want to recover the input.
In a composite process, complete the first rule before using its output as the input to the second.