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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality π×0.12×[0.46×30+(x^2-0.46)×50] ≥1.4×39 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         π × 0.12 × ( 0.46 × 30 + ( x ^ 2 - 0.46 ) × 50 ) ≥1.4 × 39         (1)

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    From inequality(1)：
         x ≤ -1.755169 或  x ≥ 1.755169

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    The final solution set is :
         x ≤ -1.755169 或  x ≥ 1.755169

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