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

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

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    From inequality(1)：
         t ≤ -0.46989 或  t ≥ 20.46989

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    The final solution set is :
         t ≤ -0.46989 或  t ≥ 20.46989

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