Mathematics
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current location:Mathematical operation > History of Inequality Computation > Answer
    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+7)/(x+1) >0 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality:
         ( x + 1 ) / ( x - 2 ) - ( x + 7 ) / ( x + 1 ) >0         (1)
        From the definition field of divisor
         x - 2 ≠ 0        (2 )
        From the definition field of divisor
         x + 1 ≠ 0        (3 )

    From inequality(1):
         x < -1 或  2 < x < 5
    From inequality(2):
         x < 2 或  x > 2
    From inequality(3):
         x < -1 或  x > -1

    From inequalities (1) and (2)
         x < -1 或  2 < x < 5     (4)
    From inequalities (3) and (4)
         x < -1 或  2 < x < 5     (5)

    The final solution set is :

         x < -1 或  2 < x < 5




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