Suppose $f(x)$ is an invertible function, and suppose that $f(2)=f^{-1}(2)=4$.

What is the value of $f(f(2))$?
Question:
Suppose $f(x)$ is an invertible function, and suppose that $f(2)=f^{-1}(2)=4$.

What is the value of $f(f(2))$?
Answer:
Let's think step by step.

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2
Suppose $f(x)$ is an invertible function, and suppose that $f(2)=f^{-1}(2)=4$.

What is the value of $f(f(2))$?
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