Function Notation

What is Function Notation?

The set of symbols used to describe functions in Additional Mathematics: f(x) for the output at x, f: x maps to f(x) for the mapping form, f inverse for the reverse mapping, fg(x) for the composite f(g(x)) in which g acts first, and f squared of x for the iterate f(f(x)) rather than the square of f(x).

This definition is part of the Functions chapter in Cambridge O Level Additional Mathematics.

Concepts related to Function Notation

• composition
• iteration
• inverse