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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 399.0591x^2-32000x+640000 >= 0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        399.0591 * x ^ 2 - 32000 * x + 640000 >= 0         (1)

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    From inequality(1)：
         x ≤ 38.149738 或  x ≥ 42.038886

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    The final solution set is :
         x ≤ 38.149738 或  x ≥ 42.038886

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