IGCSE Maths / Functions and function notation

Composite functions revision notes

Edexcel International GCSE Maths (4MA1), chapter 24: Functions and function notation, specification point 3.2d. Part of the full course.

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A composite function applies one function to the output of another. In fg(x), g acts first, so the order of the functions matters.

More lessons in Functions and function notation

• What is a function
• Function notation and evaluation
• Solving equations written in function notation
• Domain and range
• Excluded values from a domain
• Inverse functions
• Solving composite and inverse function equations