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Let f(x) = 1/x ln(x/e^x) then its primit...

Let `f(x) = 1/x ln(x/e^x)` then its primitive w.r.t x is

A

`(1)/(2)e^(x)-lnx+C`

B

`(1)/(2)lnx-e^(x)+C`

C

`(1)/(2)ln^(2)x-x+C`

D

`(e^(x))/(2x)+C`

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