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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 81d/（d²-1510） >-0.84 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        81 * d / ( d ^ 2 - 1510 ) > -0.84         (1)
        From the definition field of divisor
         x ^ 2 - 1510 ≠ 0        (2 )

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    From inequality(1)：
         d < -110.138573 或  -√1510 < d < 13.710001 或  d ＞ √1510
    From inequality(2)：
         d < -√1510 或  -√1510 < d < √1510 或  d ＞ √1510

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    From inequalities (1) and (2)
         d < -110.138573 或  -√1510 < d < 13.710001 或  d ＞ √1510    (3)

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    The final solution set is :
         d < -110.138573 或  -√1510 < d < 13.710001 或  d ＞ √1510

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