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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1/n+1     Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1 / n + 1 < ln ( 1 + 1 / n )         (1)
        From the definition field of divisor
        x ≠ 0        (2 )
        From the definition field of divisor
        x ≠ 0        (3 )
        From the definition field of ln
         1 + 1 / x > 0        (4 )

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    From inequality(1)：
        The solution set is empty, that is, within the range of real numbers, the inequality will never be established!
    From inequality(2)：
         n < 0 或  n ＞ 0
    From inequality(3)：
         n < 0 或  n ＞ 0
    From inequality(4)：
         n < -1 或  n ＞ 0

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    The final solution set is :
        The solution set is empty,that is, the inequality will never be estatlished within the real number range.

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