[int(-1)^(1)(e^(-1/x))/(x^(2)(1+e^(-2/x)...

[int_(-1)^(1)(e^(-1/x))/(x^(2)(1+e^(-2/x)))dx" is equal to: "],[" (A) "(pi)/(2)-2tan^(-1)equad " (B) "(pi)/(2)-2cot^(-1)equad " (C) "2tan^(-1)equad " (D) "pi-2tan^(-1)" (e) "]

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