1.

int (x^(2)-1)/((x^(2)+1)(x^(2)+2)(x^(2)+3))dx=

Answer»

`Tan^(-1)x+(3)/(sqrt(2))Tan^(-1)((x)/(sqrt(2)))-(2)/(sqrt(3))Tan^(-1)((x)/(sqrt(3)))+C`
`-Tan^(-1)x+(3)/(sqrt(2))Tan^(-1)((x)/(sqrt(2)))-(2)/(sqrt(3))Tan^(-1)((x)/(sqrt(3)))+c`
`Tan^(-1)x-(3)/(sqrt(2))Tan^(-1)((x)/(sqrt(2)))-(2)/(sqrt(3))Tan^(-1)((x)/(sqrt(3)))+c`
none

Answer :A


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