The Function F(x)= X² - 2 Is One-To-One on the Domain

question 25

Multiple Choice

The function f(x) = x² - 2 is one-to-one on the domain (x ? 0) .Find f ^-1(x) . ?

• A) \(f ^ { - 1 } ( x ) = - \sqrt { x + 2 }\)
• B) \(f ^ { - 1 } ( x ) = \frac { 1 } { x ^ { 2 } - 2 }\)
• C) \(f ^ { - 1 } ( x ) = \sqrt { x + 2 }\)
• D) \(f ^ { - 1 } ( x ) = \sqrt { x - 2 }\)
• E)f ^-1(x)= x² + 2

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