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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (i+1)^7-1 >2.5*i*(1+i)^7 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( i + 1 ) ^ 7 - 1 >2.5 * i * ( 1 + i ) ^ 7         (1)

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    From inequality(1)：
         0 < i < 0.35141

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    The final solution set is :
         0 < i < 0.35141

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