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The equation cos^(4)x-(a+2)cos^(2)x-(a+3...

The equation `cos^(4)x-(a+2)cos^(2)x-(a+3)=0` possesses a solution if

A

`agt-3`

B

`alt-2`

C

`-3leale-2`

D

`agt0`

Text Solution

Verified by Experts

The correct Answer is:
C
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