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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 4×20×1000÷3.14÷x^2+32×8×1000÷3.14÷x^3 ≤40×1000000 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        4 × 20 × 1000 ÷ 3.14 ÷ x ^ 2 + 32 × 8 × 1000 ÷ 3.14 ÷ x ^ 3 ≤40 × 1000000         (1)

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    From inequality(1)：
         x ≤ -0.0001 或  x ≥ 0.128464

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    The final solution set is :
         x ≤ -0.0001 或  x ≥ 0.128464

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