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

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

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

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

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    The final solution set is :
         1/2 < x ≤ 2/3

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