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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality lg(2x-4) <= 1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         lg ( 2 * x - 4 ) <= 1         (1)
        From the definition field of lg
         2 * x - 4 > 0        (2 )

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    From inequality(1)：
         x ≤ 7
    From inequality(2)：
         x ＞ 2

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    From inequalities (1) and (2)
         2 < x ≤ 7     (3)

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    The final solution set is :
         2 < x ≤ 7

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