Learn how to evaluate the composite of two functions, the inverse of a function and how the two relate to each other

Key Points

Composite functions are when you merge two, or more, functions

To find the composite of two functions you put one ‘inside’ the other

The inverse of a function is the reverse, or opposite, of the function

To find the inverse of a function change the subject of the formula

The composite of a function with it’s inverse cancel, leaving just ‘x’