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(d)/(dx)sqrt(sec^(2)x+cosec^(2)x)=...

`(d)/(dx)sqrt(sec^(2)x+cosec^(2)x)=`

A

`4"cosec" 2x.cot2x`

B

`-4` cosec 2x.cot 2x

C

`-4` cosec x. cot 2x

D

4 cosec x. cot 2x

Text Solution

Verified by Experts

The correct Answer is:
B
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