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

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

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    From inequality(1)：
         1/2 ≤ m ≤ 1
    From inequality(2)：
         m < 1 或  m ＞ 1

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

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    The final solution set is :
         1/2 ≤ m < 1

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