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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 980a+99a^2-100-8000a^3 >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        980 * a + 99 * a ^ 2 - 100 - 8000 * a ^ 3 >0         (1)

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    From inequality(1)：
         a < -0.387278 或  0.112339 < a < 0.287313

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    The final solution set is :
         a < -0.387278 或  0.112339 < a < 0.287313

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