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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1 ≤abs(x－2) <7 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        1 ≤ abs ( x - 2 )         (1)
         abs ( x - 2 ) <7         (2)

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    From inequality(1)：
         x ≤ 1 或  x ≥ 3
    From inequality(2)：
         -5 < x < 9

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    From inequalities (1) and (2)
         -5 < x ≤ 1 或  3 ≤ x < 9    (3)

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    The final solution set is :
         -5 < x ≤ 1 或  3 ≤ x < 9

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