1.

If int(x)/((x^(2)+1)(x-1))dx=A log|x^(2)+1|+B tan^(-1)x+C log|x-1|+d, then A+B+C=

Answer»

`(1)/(4)`
`(1)/(2)`
`(3)/(4)`
`(5)/(4)`

Answer :C


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