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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality abs(((3*a^2-a^3)-sqrt((a^3-3*a^2)^2-4*a^3))÷2) <1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         abs ( ( ( 3 * a ^ 2 - a ^ 3 ) - sqrt ( ( a ^ 3 - 3 * a ^ 2 ) ^ 2 - 4 * a ^ 3 ) ) ÷ 2 ) <1         (1)
        From the definition field of √
         ( x ^ 3 - 3 * x ^ 2 ) ^ 2 - 4 * x ^ 3 ≥ 0        (2 )

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    From inequality(1)：
         a ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
    From inequality(2)：
         a ≤ 0 或  a ≥ 4

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    From inequalities (1) and (2)
         a ≤ 0 或  a ≥ 4    (3)

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    The final solution set is :
         a ≤ 0 或  a ≥ 4

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