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

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

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    From inequality(1)：
         0 < x < 1/3
    From inequality(2)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         0 < x < 1/3     (3)

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    The final solution set is :
         0 < x < 1/3

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