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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -10 ≤9/（m+1） ≤6 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        -10 ≤9 / ( m + 1 )         (1)
        9 / ( m + 1 ) ≤6         (2)
        From the definition field of divisor
         x + 1 ≠ 0        (3 )

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    From inequality(1)：
         m ≤ -19/10 或  m ≥ -1
    From inequality(2)：
         m ≤ -1 或  m ≥ 1/2
    From inequality(3)：
         m < -1 或  m ＞ -1

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    From inequalities (1) and (2)
         m ≤ -19/10 或  -1 ≤ m ≤ -1 或  m ≥ 1/2    (4)
    From inequalities (3) and (4)
         m ≤ -19/10 或  m ≥ 1/2    (5)

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    The final solution set is :
         m ≤ -19/10 或  m ≥ 1/2

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