# Composition of Functions

Taught by mrbrianmclogan
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Part of video series
Meets NCTM Standards:
Errors in this video:

At about the 1:30 mark, the instructor writes g(f(x)) to represent "a function f(x) as a function of another function g(x)". This statement should be written as f(g(x)). He makes a similar mistake a little later when he writes f(g(x)) when it should be g(f(x)).

Lesson Summary:

This lesson provides an introduction to composition of functions, which involves using one function as an input value for another function. The transcript explains how to use the notation "g of f" (fog) and "g of x" (golf) to represent composition of functions. Using examples, the lesson demonstrates how to evaluate composition of functions, including simplifying expressions by expanding them.

Lesson Description:

Overview composition of functions

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