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f(x)=sin^(-1)x+tan^(-1)x+sec^(-1)x then ...

`f(x)=sin^(-1)x+tan^(-1)x+sec^(-1)x` then range of f(x) is ______

A

`(pi/4,(3pi)/4)`

B

`[pi/4,(3pi)/4]`

C

`{pi/4,(3pi)/4}`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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