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

[ 1/1Inequality]
    Assignment:Find the solution set of inequality 2/(x^2-4x+3) ≤5/（x^2-9） .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
        2 / ( x ^ 2 - 4 * x + 3 ) ≤5 / ( x ^ 2 - 9 )         (1)
        From the definition field of divisor
         x ^ 2 - 4 * x + 3 ≠ 0        (2 )
        From the definition field of divisor
         x ^ 2 - 9 ≠ 0        (3 )

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    From inequality(1)：
         x ≤ -3 或  1 ≤ x ≤ 3 或  x ≥ 11/3
    From inequality(2)：
         x < 1 或  1 < x < 3 或  x ＞ 3
    From inequality(3)：
         x < -3 或  -3 < x < 3 或  x ＞ 3

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    From inequalities (1) and (2)
         x ≤ -3 或  1 < x < 3 或  x ≥ 11/3    (4)
    From inequalities (3) and (4)
         x < -3 或  1 < x < 3 或  x ≥ 11/3    (5)

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    The final solution set is :
         x < -3 或  1 < x < 3 或  x ≥ 11/3

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