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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality n^2/2^n >（n+1）^2/2^（n+1） .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         n ^ 2 / 2 ^ n > ( n + 1 ) ^ 2 / 2 ^ ( n + 1 )         (1)

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    From inequality(1)：
         n < -0.414214 或  n ＞ 2.414214

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    The final solution set is :
         n < -0.414214 或  n ＞ 2.414214

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