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To the equation 2^(2pi//cos^(-1)x)-(a+1/...

To the equation `2^(2pi//cos^(-1)x)-(a+1/2)2^(pi//cos^(-1)x)-a^(2)=0` has only real root, then

A

`1 le a le 3`

B

`a ge 1`

C

`a le -3`

D

`a ge 3`

Text Solution

Verified by Experts

The correct Answer is:
B, C
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