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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1/(x-6.371*10^6)-1/x >5.965/6.371/4/10^12 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1 / ( x - 6.371 * 10 ^ 6 ) - 1 / x >5.965 / 6.371 / 4 / 10 ^ 12         (1)
        From the definition field of divisor
         x - 6.371 * 10 ^ 6 ≠ 0        (2 )
        From the definition field of divisor
        x ≠ 0        (3 )

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    From inequality(1)：
         x < 0
    From inequality(2)：
         x ∈ R （R为全体实数），即在实数范围内，不等式恒成立！
    From inequality(3)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         x < 0    (4)
    From inequalities (3) and (4)
         x < 0    (5)

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    The final solution set is :
         x < 0

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