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int(d^(2))/(dx^(2))(tan^(-1)x)dx=...

`int(d^(2))/(dx^(2))(tan^(-1)x)dx=`

A

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

B

`tan^(-1)x+c`

C

`x tan^(-1)x-(1)/(2)log(1+x^(2))+c`

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
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