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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （lgx÷lg3）^2-20（lgx÷lg3） ≥20*（lg2÷lg3）-3 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( lg x ÷ lg 3 ) ^ 2 - 20 * ( lg x ÷ lg 3 ) ≥20 * ( lg 2 ÷ lg 3 ) - 3         (1)
        From the definition field of lg
        x > 0        (2 )
        From the definition field of lg
        x > 0        (3 )

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    From inequality(1)：
         x ≤ 0.596768
    From inequality(2)：
         x ＞ 0
    From inequality(3)：
         x ＞ 0

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    From inequalities (1) and (2)
         0 < x ≤ 0.596768     (4)
    From inequalities (3) and (4)
         0 < x ≤ 0.596768     (5)

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    The final solution set is :
         0 < x ≤ 0.596768

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