Let $f(x)=\sqrt{2-x}$ (A) Why Does $f$ Have an Inverse That Is a Function?
(B) Find a Is

question 33

Essay

Let $f(x)=\sqrt{2-x}$
(a) Why does $f$ have an inverse that is a function?
(b) Find a rule for $f^{-1}(x)$ and state its domain.

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