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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality abs(3t-0.5*t*t) <= 4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         abs ( 3 * t - 0.5 * t * t ) <= 4         (1)

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    From inequality(1)：
         -1.123106 ≤ t ≤ 2 或  4 ≤ t ≤ 7.123106

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    The final solution set is :
         -1.123106 ≤ t ≤ 2 或  4 ≤ t ≤ 7.123106

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