If ƒ (7) = 22, thenf-¹(f(7)) = [?]

Mint asked Aug 1, 2023

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Mint asked Aug 1, 2023

by Mint

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19 votes

Remember the following property of invertible functions:

$f(x)=y\qquad\Leftrightarrow\quad f^(-1)(y)=x$

Then:

$f^(-1)(f(x))=x\qquad\forall x$

Then:

Therefore, the answer is: 7.

Stephen Quan answered Aug 7, 2023

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