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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1/(1-ln(1+x)) ≤-1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1 / ( 1 - ln ( 1 + x ) ) ≤ -1         (1)
        From the definition field of ln
         1 + x > 0        (2 )
        From the definition field of divisor
         1 - ln ( 1 + x ) ≠ 0        (3 )

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    From inequality(1)：
         1.718282 ≤ x ≤ 6.389056
    From inequality(2)：
         x ＞ -1
    From inequality(3)：
         x < 1.718282 或  x ＞ 1.718282

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    From inequalities (1) and (2)
         1.718282 ≤ x ≤ 6.389056    (4)
    From inequalities (3) and (4)
         1.718282 < x ≤ 6.389056     (5)

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    The final solution set is :
         1.718282 < x ≤ 6.389056

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