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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (x+1)÷(1-x) >3x+1 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( x + 1 ) ÷ ( 1 - x ) >3 * x + 1         (1)

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    From inequality(1)：
         x < 0 或  1/3 < x < 1

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    The final solution set is :
         x < 0 或  1/3 < x < 1

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