# The function f is defined as #f(x) = x/(x-1)#, how do you find #f(f(x))#?

##### 1 Answer

Apr 8, 2017

Substitute f(x) for every x and then simplify.

#### Explanation:

Given:

Substitute f(x) for every x

Multiply numerator and denominator by 1 in the form of

This means that