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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -2679.184+886.09n+n^2/3×(740.431+19.119n)×(2221.293+38.238n)/(1480.862+38.238)-0.4×n^2×(251.107+4.766n)×(753.321+9.531n)/(502.214+9.531n) ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -2679.184 + 886.09 * n + n ^ 2 / 3 × ( 740.431 + 19.119 * n ) × ( 2221.293 + 38.238 * n ) / ( 1480.862 + 38.238 ) - 0.4 × n ^ 2 × ( 251.107 + 4.766 * n ) × ( 753.321 + 9.531 * n ) / ( 502.214 + 9.531 * n ) ≥0         (1)
        From the definition field of divisor
         502.214 + 9.531 * x ≠ 0        (2 )

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    From inequality(1)：
         n ≤ -66.54809 或  n ≥ 1.975911
    From inequality(2)：
         n < -52.692687 或  n ＞ -52.692687

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    From inequalities (1) and (2)
         n ≤ -66.54809 或  n ≥ 1.975911    (3)

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    The final solution set is :
         n ≤ -66.54809 或  n ≥ 1.975911

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