# Math Help - Find f(f(x))

1. ## Find f(f(x))

If f(x) = x/(x - 1), find f(f(x)).

2. Originally Posted by blueridge
If f(x) = x/(x - 1), find f(f(x)).
$\frac{\frac{x}{x-1}}{\frac{x}{x-1} - 1} = x$

3. ## Curious...

Are composite functions taught in calculus 1 and 2?

4. Originally Posted by blueridge
Are composite functions taught in calculus 1 and 2?
Composite functions taught in secondary school algebra.

5. ## tell me...

So, there is nothing similar to composite functions in the calculus sequence?

6. Originally Posted by blueridge
So, there is nothing similar to composite functions in the calculus sequence?
You do composite functions in Calculus, but you are expected to know them already from High School.