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Let f:(-1,1)toB be a function defined by...

Let `f:(-1,1)toB` be a function defined by : `f(x)=tan^(-1)""(2x)/(1-x^2)`,
then f is both one-one and onto when B is the interval :

A

` (-(pi)/(2), (pi)/(2))`

B

`[-(pi)/(2), (pi)/(2))`

C

`[0, (dot(pi))/(2))`

D

`(0, (pi)/(2))`

Text Solution

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The correct Answer is:
A
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