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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -sqrt(5)*t^2/5-sqrt(5)*t/2 <60t/7 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -sqrt ( 5 ) * t ^ 2 / 5 - sqrt ( 5 ) * t / 2 <60 * t / 7         (1)

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    From inequality(1)：
         t < -21.666297 或  t ＞ 0

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    The final solution set is :
         t < -21.666297 或  t ＞ 0

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