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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 abs(b+1-sqrt(b^2-2b-3)-6*b*((b+1-sqrt(b^2-2b-3))/2b)^2+4*b*((b+1-sqrt(b^2-2b-3))/2b)^3)小于1 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
abs ( b + 1 - sqrt ( b ^ 2 - 2 * b - 3 ) - 6 * b * ( ( b + 1 - sqrt ( b ^ 2 - 2 * b - 3 ) ) / 2 * b ) ^ 2 + 4 * b * ( ( b + 1 - sqrt ( b ^ 2 - 2 * b - 3 ) ) / 2 * b ) ^ 3 ) <1 (1)
From the definition field of √
x ^ 2 - 2 * x - 3 ≥ 0 (2 )
From the definition field of √
x ^ 2 - 2 * x - 3 ≥ 0 (3 )
From the definition field of √
x ^ 2 - 2 * x - 3 ≥ 0 (4 )
From inequality(1):
-1.473801 < b < -1.364263 或 b > -1.258419
From inequality(2):
b ≤ -1 或 b ≥ 3
From inequality(3):
b ≤ -1 或 b ≥ 3
From inequality(4):
b ≤ -1 或 b ≥ 3
From inequalities (1) and (2)
-1.473801 < b < -1.364263 或 -1.258419 < b ≤ -1 或 b ≥ 3 (5)
From inequalities (3) and (5)
-1.473801 < b < -1.364263 或 -1.258419 < b ≤ -1 或 b ≥ 3 (6)
From inequalities (4) and (6)
-1.473801 < b < -1.364263 或 -1.258419 < b ≤ -1 或 b ≥ 3 (7)
The final solution set is :
-1.473801 < b < -1.364263 或 -1.258419 < b ≤ -1 或 b ≥ 3Your problem has not been solved here? Please take a look at the hot problems !