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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality log(X,9) >2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         log( X , 9 ) >2         (1)
        From the definition field of log
         x > 0        (2 )
         9 > 0 also ≠ 1        (3 )

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    From inequality(1)：
         1 < X < 3
    From inequality(2)：
         X ＞ 0
    From inequality(3)：
         X ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

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    From inequalities (1) and (2)
         1 < X < 3     (4)
    From inequalities (3) and (4)
         1 < X < 3     (5)

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    The final solution set is :
         1 < X < 3

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