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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality -1 <(x^2+1)/10x <1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 2 inequalities：
        -1 < ( x ^ 2 + 1 ) / 10 * x         (1)
         ( x ^ 2 + 1 ) / 10 * x <1         (2)

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    From inequality(1)：
         x ＞ -2
    From inequality(2)：
         x < 2

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

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    The final solution set is :
         -2 < x < 2

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