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int (x dx)/(e^(x^(2)) + e^(-x^(2)) =...

`int (x dx)/(e^(x^(2)) + e^(-x^(2))` = _____

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`int (xdx) / (e^(x^2) + e^(-x^2)) = 1/2 int (2xe^(x^2) dx) / (((e^(x^2))^2) + 1) = 1/2 tan^(-1)(e^(x^2) + C`
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