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

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

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    From inequality(1)：
         x < -0.29737 或  x ＞ 0
    From inequality(2)：
         x ∈ R （R为全体实数），即在实数范围内，不等式恒成立！
    From inequality(3)：
         x < 0 或  x ＞ 0

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    From inequalities (1) and (2)
         x < -0.29737 或  x ＞ 0    (4)
    From inequalities (3) and (4)
         x < -0.29737 或  x ＞ 0    (5)

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    The final solution set is :
         x < -0.29737 或  x ＞ 0

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