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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality (1+x)/(1-x) <= 1.5 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 1 + x ) / ( 1 - x ) <= 1.5         (1)
        From the definition field of divisor
         1 - x ≠ 0        (2 )

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    From inequality(1)：
         x ≤ 1/5 或  x ≥ 1
    From inequality(2)：
         x < 1 或  x ＞ 1

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    From inequalities (1) and (2)
         x ≤ 1/5 或  x ＞ 1    (3)

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    The final solution set is :
         x ≤ 1/5 或  x ＞ 1

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