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d/(dx)(sec^(-1)x+cosec^(-1)x)=0...

`d/(dx)(sec^(-1)x+cosec^(-1)x)=0`

A

`(pi)/2`

B

`1`

C

0

D

`-(pi)/2`

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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