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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 8ln(k^5+1) <0.001k^2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        8 * ln ( k ^ 5 + 1 ) <0.001 * k ^ 2         (1)
        From the definition field of ln
         x ^ 5 + 1 > 0        (2 )

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    From inequality(1)：
         k < 0 或  0 < k < 1/20
    From inequality(2)：
         k ＞ -1

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    From inequalities (1) and (2)
         -1 < k < 0 或  0 < k < 1/20     (3)

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    The final solution set is :
         -1 < k < 0 或  0 < k < 1/20

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