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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 1/k+1-0.9^k <1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        1 / k + 1 - 0.9 ^ k <1         (1)
        From the definition field of divisor
        x ≠ 0        (2 )

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    From inequality(1)：
         k < 0 或  1.125955 < k < 33.26086
    From inequality(2)：
         k < 0 或  k ＞ 0

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    From inequalities (1) and (2)
         k < 0 或  1.125955 < k < 33.26086     (3)

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    The final solution set is :
         k < 0 或  1.125955 < k < 33.26086

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