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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality abs（1200x+4000/3-(1000sqrt(11)x)/5）/sqrt(x^2+1) >700 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         abs ( 1200 * x + 4000 / 3 - ( 1000 * sqrt ( 11 ) * x ) / 5 ) / sqrt ( x ^ 2 + 1 ) >700         (1)
        From the definition field of √
         x ^ 2 + 1 ≥ 0        (2 )

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    From inequality(1)：
         -0.807748 < x < 7.893272
    From inequality(2)：
         x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!

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    From inequalities (1) and (2)
         -0.807748 < x < 7.893272     (3)

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    The final solution set is :
         -0.807748 < x < 7.893272

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