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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality x/400-1.96(x*(1-x/400)/400/400)^(1/2) >0.2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         x / 400 - 1.96 * ( x * ( 1 - x / 400 ) / 400 / 400 ) ^ ( 1 / 2 ) >0.2         (1)

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    From inequality(1)：
         x ＞ 96.788455

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    The final solution set is :
         x ＞ 96.788455

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