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