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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (97-0.7*n)/sqrt(0.21*n) >3 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 97 - 0.7 * n ) / sqrt ( 0.21 * n ) >3         (1)
        From the definition field of √
         0.21 * x ≥ 0        (2 )

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    From inequality(1)：
         0 < n < 117.300664
    From inequality(2)：
         n ≥ 0

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    From inequalities (1) and (2)
         0 < n < 117.300664     (3)

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    The final solution set is :
         0 < n < 117.300664

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