1.

The sum of the series (x^(2))/(2)+(2)/(3)x^(3)+(3)/(4)x^(4)+(4)/(5)x^(5)+….=

Answer»

`(X)/(1+x)+LOG(1+x)`
`(x)/(1-x)+log(1-x)`
`-(x)/(1+x)+log(1+x)`
`(x)/(1-x)+log(1+x)`

ANSWER :B


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