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

[" 22."int_(-1)^(1)(e^(-1/x))/(x^(2)(1+e^(-2/x)))dx" is equal to "],[[" (1) "(pi)/(2)-2tan^(-1)e," (2) "(pi)/(2)-2cot^(-1)e],[" (3) "2tan^(-1)e," (4) "pi-2tan^(-1)e]]

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