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If I(1)=int(1//e)^(tanx)(t)/(1+t^(2))dta...

If `I_(1)=int_(1//e)^(tanx)(t)/(1+t^(2))dtandI_(2)=int_(1//e)^(cotx)(dt)/(t(1+t^(2)))` then the values of `I_(1)+I_(2)` is

A

`(1)/(2)`

B

1

C

`(e)/(2)`

D

`(1)/(3)(e+(1)/(e))`

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