Composite Function

What is Composite Function?

A function formed by applying one function to the output of another. In fg(x), which means f(g(x)), the inner function g acts first and f acts on its result. A value x is a legal input only if x lies in the domain of g and g(x) lies in the domain of f, and fg is generally a different function from gf.

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

Concepts related to Composite Function

• order of operations
• domain restriction
• iteration