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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality ln(2n^2) <4.5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ln ( 2 * n ^ 2 ) <4.5         (1)
        From the definition field of ln
         2 * x ^ 2 > 0        (2 )

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    From inequality(1)：
         -6.708842 < n < 6.708842
    From inequality(2)：
         n < 0 或  n ＞ 0

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    From inequalities (1) and (2)
         -6.708842 < n < 0 或  0 < n < 6.708842     (3)

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    The final solution set is :
         -6.708842 < n < 0 或  0 < n < 6.708842

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