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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 4^(k-1)/!(k-1) >0.9*e4 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        4 ^ ( k - 1 ) / !( k - 1 ) >0.9 * e 4         (1)

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    From inequality(1)：
         k ＞ 4.765883

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    The final solution set is :
         k ＞ 4.765883

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