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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -6000+1800*((1+x)^7-1)/x*(1+x)^7 >-8000+2200*((1+x)^7-1)/x*(1+x)^7 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        -6000 + 1800 * ( ( 1 + x ) ^ 7 - 1 ) / x * ( 1 + x ) ^ 7 > -8000 + 2200 * ( ( 1 + x ) ^ 7 - 1 ) / x * ( 1 + x ) ^ 7         (1)
        From the definition field of divisor
        x ≠ 0        (2 )
        From the definition field of divisor
        x ≠ 0        (3 )

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    From inequality(1)：
         x < -0.033309
    From inequality(2)：
         x < 0 或  x ＞ 0
    From inequality(3)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         x < -0.033309    (4)
    From inequalities (3) and (4)
         x < -0.033309    (5)

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    The final solution set is :
         x < -0.033309

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