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

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

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    From inequality(1)：
         n ＞ 999
    From inequality(2)：
         n < -1 或  n ＞ -1

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    From inequalities (1) and (2)
         n ＞ 999    (3)

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    The final solution set is :
         n ＞ 999

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