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Let RR be the set of all real numbe...

Let `RR ` be the set of all real numbers and `f : R to R ` be given by ` f(x) = 3 x^(2) +1 ` then the set `f^(-1) ([1,6])` is -

A

`{-sqrt((5)/(3)),0, sqrt((5)/(3))}`

B

`[-sqrt((5)/(3)),sqrt((5)/(3))]`

C

`[-sqrt((1)/(3)),sqrt((1)/(3))]`

D

`(-sqrt((5)/(3)),sqrt((5)/(3)))`

Text Solution

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