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If f(x) =(alphax)/(x+1), x ne 1, then th...

If `f(x) =(alphax)/(x+1), x ne 1`, then the value of `alpha` for which `f(f(x))=x` is:

A

`Q_(1)`

B

`Q_(2)`

C

`Q_(3)`

D

`Q_(4)`

Text Solution

Verified by Experts

The correct Answer is:
B
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