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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality t^2-t-4 >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         t ^ 2 - t - 4 >0         (1)

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    From inequality(1)：
         t < -1.561553 或  t ＞ 2.561553

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    The final solution set is :
         t < -1.561553 或  t ＞ 2.561553

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