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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -671.86632-669.622*n-40.93868*n*n+1.128*n*n*n ≥0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -671.86632 - 669.622 * n - 40.93868 * n * n + 1.128 * n * n * n ≥0         (1)

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    From inequality(1)：
         -11.357514 ≤ n ≤ -1.07627 或  n ≥ 48.726941

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    The final solution set is :
         -11.357514 ≤ n ≤ -1.07627 或  n ≥ 48.726941

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