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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 103.0 <√(3010^2+1881.25^2)/12.5/x ≤103.1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        103.0 < √ ( 3010 ^ 2 + 1881.25 ^ 2 ) / 12.5 / x         (1)
         √ ( 3010 ^ 2 + 1881.25 ^ 2 ) / 12.5 / x ≤103.1         (2)
        From the definition field of divisor
        x ≠ 0        (3 )

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    From inequality(1)：
         0 < x < 2.756921
    From inequality(2)：
         x ≤ 0 或  x ≥ 2.754247
    From inequality(3)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         2.754247 ≤ x < 2.756921    (4)
    From inequalities (3) and (4)
         2.754247 ≤ x < 2.756921    (5)

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    The final solution set is :
         2.754247 ≤ x < 2.756921

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