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

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

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    From inequality(1)：
         1 < x < 2 或  x ＞ 3
    From inequality(2)：
         x < 3 或  x ＞ 3

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    From inequalities (1) and (2)
         1 < x < 2 或  x ＞ 3    (3)

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    The final solution set is :
         1 < x < 2 或  x ＞ 3

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