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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （n^2+3n）/2 >200 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( n ^ 2 + 3 * n ) / 2 >200         (1)

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    From inequality(1)：
         n < -21.556171 或  n ＞ 18.556171

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    The final solution set is :
         n < -21.556171 或  n ＞ 18.556171

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