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A function f:(0,pi //2) to R is defi...

A function ` f:(0,pi //2) to R ` is defined as : `f(theta )=|(1,tan theta ,1),(-tan theta ,1,tan theta ),(-1,-tan theta ,1)|`
then the range of f is -

A

`(2,oo)`

B

`(-oo,-2)`

C

`(2,ooo)`

D

`(-oo,2)`

Text Solution

Verified by Experts

The correct Answer is:
A
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