1.

Integration by partial fraction : int(xdx)/(x^(4)+x^(2)+1)=......

Answer»

`(1)/(3)TAN^(-1)((2X^(2)+1)/(3))`
`(1)/(SQRT(3))tan^(-1)((2x^(2)+1)/(3))`
`(1)/(sqrt(3))tan^(-1)((2x^(1)+1)`
None of these

Answer :B


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