Given the functions $$ r(x) = \frac{1}{x} $$ and $$ s(x) = x...

Question Analysis
This question tests the understanding of function composition, specifically , where the output of is used as the input for .

Key Concept Explanation
The composition means applying first and then using the result as the input for .

Step-by-step Solution
1. Start with the given functions: and
2. Substitute