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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 880.180 ≤2/3×14.3×1000×0.785×0.5×(sin3.1416x)^3/3.1416+(x×14.3×1000×0.785×（1-(（sin2×3.1416x）/(2×3.1416x)))/(1.25-3x)×0.4375/3.1416×((sin3.1416x)+sin(1-2x)) ) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        880.180 ≤2 / 3 × 14.3 × 1000 × 0.785 × 0.5 × ( sin 3.1416 * x ) ^ 3 / 3.1416 + ( x × 14.3 × 1000 × 0.785 × ( 1 - ( ( sin 2 × 3.1416 * x ) / ( 2 × 3.1416 * x ) ) ) / ( 1.25 - 3 * x ) × 0.4375 / 3.1416 × ( ( sin 3.1416 * x ) + sin ( 1 - 2 * x ) ) )         (1)
        From the definition field of divisor
         2 × 3.1416 * x ≠ 0        (2 )
        From the definition field of divisor
         1.25 - 3 * x ≠ 0        (3 )

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    From inequality(1)：
         0.389017 ≤ x ≤ 0.416667
    From inequality(2)：
         x < 0 或  x ＞ 0
    From inequality(3)：
         x < 0.416667 或  x ＞ 0.416667

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    From inequalities (1) and (2)
         0.389017 ≤ x ≤ 0.416667    (4)
    From inequalities (3) and (4)
         0.389017 ≤ x < 0.416667    (5)

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    The final solution set is :
         0.389017 ≤ x < 0.416667

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