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

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

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    From inequality(1)：
         -2.718282 ≤ x ≤ 2.718282
    From inequality(2)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         -2.718282 ≤ x < 0 或  0 < x ≤ 2.718282     (3)

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    The final solution set is :
         -2.718282 ≤ x < 0 或  0 < x ≤ 2.718282

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