Let \( \mathcal{R} \) be the region bounded by the curve \( y = \frac{\ln x}{x} \), the \( x \)-axis, and the line \( x = e \). Find the area of \( \mathcal{R} \).
calculus-idefinite-integralarea-under-curvenatural-logarithmintegration-by-substitutionfundamental-theorem-of-calculusevaluate-integralfind-arearoots-of-functionslogarithmic-functionsrational-functionsu-substitution
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