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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 ln(a^2-4) <2-(a^2-4)^(1/2) .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
ln ( a ^ 2 - 4 ) <2 - ( a ^ 2 - 4 ) ^ ( 1 / 2 ) (1)
From the definition field of ln
x ^ 2 - 4 > 0 (2 )
From inequality(1):
-3.374768 < a < 3.374768
From inequality(2):
a < -2 或 a > 2
From inequalities (1) and (2)
-3.374768 < a < -2 或 2 < a < 3.374768 (3)
The final solution set is :
-3.374768 < a < -2 或 2 < a < 3.374768 Your problem has not been solved here? Please take a look at the hot problems !