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intdx/(x^2+4)=...

`intdx/(x^2+4)`=

A

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

B

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

C

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

D

`tan^-1x+k`

लिखित उत्तर

Verified by Experts

The correct Answer is:
C
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