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    Mathematics A-Level

    Composite function

    What Composite function means in Mathematics A-Level, as defined for AQA, Pearson Edexcel.

    Definitions of Composite function

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    Reference: AQA

    Applies one function to the output of another, written (f ∘ g)(x) = f(g(x)) and read as 'f of g of x'.
    AQA · B: Algebra and functions (study guide)
    Applies one function after another, where fg(x) means g first then f, so fg(x) = f(g(x)).
    Pearson Edexcel · Algebra and functions (study guide)
    A function formed when the output of one function is used as the input of another, written for example as f(g(x)).
    Pearson Edexcel · Differentiation (study guide)

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