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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -1（1-1/a）     Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -1 * ( 1 - 1 / a ) < a         (1)
        From the definition field of divisor
        x ≠ 0        (2 )

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    From inequality(1)：
         -1.618034 < a < 0 或  a ＞ 0.618034
    From inequality(2)：
         a < 0 或  a ＞ 0

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    From inequalities (1) and (2)
         -1.618034 < a < 0 或  a ＞ 0.618034    (3)

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    The final solution set is :
         -1.618034 < a < 0 或  a ＞ 0.618034

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