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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 800000*x*(1+x)^180/((1+x)^180-1) <6699.1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        800000 * x * ( 1 + x ) ^ 180 / ( ( 1 + x ) ^ 180 - 1 ) <6699.1         (1)
        From the definition field of divisor
         ( 1 + x ) ^ 180 - 1 ≠ 0        (2 )

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    From inequality(1)：
         x < -2 或  -1.970095 < x < 0.0049
    From inequality(2)：
         x < -2 或  -2 < x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         x < -2 或  -1.970095 < x < 0 或  0 < x < 0.0049     (3)

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    The final solution set is :
         x < -2 或  -1.970095 < x < 0 或  0 < x < 0.0049

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