SOLUTION: If (f(f(f(f(x)))) =f(x) , find f(x)

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Question 1203128: If (f(f(f(f(x)))) =f(x) , find f(x)
Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
Is the written exercise incomplete?

Those show three compositions of f(x) with itself.
If the first composition is the inverse function, then the third composition is also to give f(x). ..... Seems f(x) is its own inverse.