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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
Question type: Inequality
Solution:
The inequality can be reduced to 3 inequalities:
2 * x < x + 2 (1)
x + 2 <5 * x / 4 (2)
5 * x / 4 <2 / ( x + 1 ) (3)
From the definition field of divisor
x + 1 ≠ 0 (4 )
From inequality(1):
x < 2
From inequality(2):
x > 8
From inequality(3):
x < -1.860147 或 -1 < x < 0.860147
From inequality(4):
x < -1 或 x > -1
From inequalities (1) and (2)
x ∈ Φ (Φ is empty)that is, the inequality will never be estatlished within the real number range! (5)
From inequalities (3) and (5)
x ∈ Φ (Φ is empty)that is, the inequality will never be estatlished within the real number range! (6)
From inequalities (4) and (6)
x ∈ Φ (Φ is empty)that is, the inequality will never be estatlished within the real number range! (7)
The final solution set is :
x ∈ Φ (Φ is empty)that is, the inequality will never be estatlished within the real number range!Your problem has not been solved here? Please take a look at the hot problems !