1.

intx.tan^(-1)xdx=......+c

Answer»

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

ANSWER :B


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