Overview: 2 questions will be solved this time.Among them
           ☆2 inequalities

[ 1/2Inequality]
    Assignment:Find the solution set of inequality 2 <2x <4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        2 <2 * x         (1)
        2 * x <4         (2)

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

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

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    The final solution set is :
         1 < x < 2
[ 2/2Inequality]
    Assignment:Find the solution set of inequality 9 <6x <11 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        9 <6 * x         (1)
        6 * x <11         (2)

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    From inequality(1)：
         x ＞ 3/2
    From inequality(2)：
         x < 11/6

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    From inequalities (1) and (2)
         3/2 < x < 11/6     (3)

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    The final solution set is :
         3/2 < x < 11/6

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