Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality e＋1 ≥xln（x－1） .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         e + 1 ≥ x * ln ( x - 1 )         (1)
        From the definition field of ln
         x - 1 > 0        (2 )

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    From inequality(1)：
         x ≤ 3.718282
    From inequality(2)：
         x ＞ 1

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    From inequalities (1) and (2)
         1 < x ≤ 3.718282     (3)

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    The final solution set is :
         1 < x ≤ 3.718282

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