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The range of the function, f(x)= (1+sec^...

The range of the function, `f(x)= (1+sec^-1x) (1 + cos^-1 x)` is

A

`(-oo,oo)`

B

`(-oo,0]uu[4,oo)`

C

`{1,(1+pi)(2)}`

D

`{0,(1+pi^(2))}`

Text Solution

Verified by Experts

The correct Answer is:
C
Domain of `f(x)` is `{1,-1}` so range will be `f(1)` & `f(-1)`
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