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int(x^(2)-1)/(x^(4)+x^(2)+1)dx=...

`int(x^(2)-1)/(x^(4)+x^(2)+1)dx=`

A

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

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
D
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