Mathematics GCSE
Identity function
What Identity function means in Mathematics GCSE, as defined for Pearson Edexcel.
Definition of Identity function
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Reference: Pearson Edexcel
The function that leaves every permitted input unchanged: I(x) = x.
Topics that use Identity function
- Algebra - Notation, vocabulary and manipulation (Pearson Edexcel GCSE)
Related terms
- algebraic equivalence
- algebraic notation
- algebraic proof
- Base
- Coefficient
- collecting like terms
- composite functions
- Conjugate
Using Identity function in the exam
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