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The domain of y=cos ^(-1)(x^(2)-4) is...

The domain of `y=cos ^(-1)(x^(2)-4)` is

A

[3,5]

B

`[0, pi]`

C

`[-sqrt(5),-sqrt(3)] cap[-sqrt(5), sqrt(3)]`

D

`[-sqrt(5),-sqrt(3)] uu[sqrt(3), sqrt(5)]`

Text Solution

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The correct Answer is:
D
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