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If `f:Rto R` be mapping defined by `f(x)=x^(2)+5`, then `f^(-1)(x)` is equal to

A

`(x+5)^(1//3)`

B

`(x-5)^(1//3)`

C

`(5-x)^(1//3)`

D

`5-x`

Text Solution

Verified by Experts

The correct Answer is:
A
Let `y=f(x)=x^(3)+5`
`Rightarrow x=(y-5)^(1//3)`
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