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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （n+1）（10/11）^n ≥(n+2)(10/11)^(n+1) .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( n + 1 ) * ( 10 / 11 ) ^ n ≥ ( n + 2 ) * ( 10 / 11 ) ^ ( n + 1 )         (1)

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    From inequality(1)：
         n ≥ 9

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    The final solution set is :
         n ≥ 9

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