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

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

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    From inequality(1)：
         x ≤ -2.769292 或  x ≥ 1
    From inequality(2)：
         x < -2.769292 或  x ＞ -2.769292

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    From inequalities (1) and (2)
         x < -2.769292 或  x ≥ 1    (3)

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    The final solution set is :
         x < -2.769292 或  x ≥ 1

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