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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality x >1/2+2/3+3/4+4/5+5/6+6/7+7/8+8/9 >x .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
         x >1 / 2 + 2 / 3 + 3 / 4 + 4 / 5 + 5 / 6 + 6 / 7 + 7 / 8 + 8 / 9         (1)
        1 / 2 + 2 / 3 + 3 / 4 + 4 / 5 + 5 / 6 + 6 / 7 + 7 / 8 + 8 / 9 > x         (2)

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    From inequality(1)：
         x ＞ 6.171032
    From inequality(2)：
         x < 6.171032

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    From inequalities (1) and (2)
        x ∈ Φ (Φ is empty)that is, the inequality will never be estatlished within the real number range!    (3)

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    The final solution set is :
        x ∈ Φ (Φ is empty)that is, the inequality will never be estatlished within the real number range!

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