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Let RR be the set of real numbers and th...

Let RR be the set of real numbers and the mapping `f: RR rarr RR` be defined by `f(x)=2x^(2)`, then `f^(-1) (32)=`

A

`{4,-4}`

B

`{1,-1}`

C

`{2,-2}`

D

`{3,-3}`

Text Solution

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The correct Answer is:
a
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