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Overview: 1 questions will be solved this time.Among them
☆1 inequalities
[ 1/1Inequality]
Assignment:Find the solution set of inequality 2x+1 >7/x <2 .
Question type: Inequality
Solution:
The inequality can be reduced to 2 inequalities:
2 * x + 1 >7 / x (1)
7 / x <2 (2)
From the definition field of divisor
x ≠ 0 (3 )
From inequality(1):
-2.137459 < x < 0 或 x > 1.637459
From inequality(2):
x < 0 或 x > 7/2
From inequality(3):
x < 0 或 x > 0
From inequalities (1) and (2)
-2.137459 < x < 0 或 x > 7/2 (4)
From inequalities (3) and (4)
-2.137459 < x < 0 或 x > 7/2 (5)
The final solution set is :
-2.137459 < x < 0 或 x > 7/2Your problem has not been solved here? Please take a look at the hot problems !