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d/(dx)(cot^(-1)x)=...

`d/(dx)(cot^(-1)x)=`

A

`1/(1+x^(2))`

B

`1/(1+x)`

C

`-1/(1+x)`

D

`-1/(1+x^(2))`

लिखित उत्तर

Verified by Experts

The correct Answer is:
D
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