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f(x)=sqrt(1-sin^(2)x)+sqrt(1+tan^(2)x) t...

`f(x)=sqrt(1-sin^(2)x)+sqrt(1+tan^(2)x)` then

A

fundamental period of `f(x) " is " pi`

B

range of `f(x)" is "[2, oo)`

C

domain of `f(x)` is R

D

`f(x)=2` has 3 solution in `[0, 2pi]`

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Verified by Experts

The correct Answer is:
A, B, D
`f(x)=|cosx|+|secx|.`
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