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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality abs(a^3-3*a^2) <（1+a^3) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         abs ( a ^ 3 - 3 * a ^ 2 ) < ( 1 + a ^ 3 )         (1)

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    From inequality(1)：
         -1/2 < a < 1 或  a ＞ 1

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    The final solution set is :
         -1/2 < a < 1 或  a ＞ 1

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