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

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

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    From inequality(1)：
         x < 1.677651
    From inequality(2)：
         -1/2 < x < 1 或  x ＞ 1

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    From inequalities (1) and (2)
         -1/2 < x < 1 或  1 < x < 1.677651     (3)

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    The final solution set is :
         -1/2 < x < 1 或  1 < x < 1.677651

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