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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -1/(4*a)-(9a)/4+0.4 >8 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -1 / ( 4 * a ) - ( 9 * a ) / 4 + 0.4 >8         (1)
        From the definition field of divisor
         4 * x ≠ 0        (2 )

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    From inequality(1)：
         a < -3.344556
    From inequality(2)：
         a < 0 或  a ＞ 0

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    From inequalities (1) and (2)
         a < -3.344556    (3)

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    The final solution set is :
         a < -3.344556

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