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☆1 inequalities
[ 1/1Inequality]
Assignment:Find the solution set of inequality 0.25*ln(2*x+2*(1+4*x*x)^(-0.5)+(1+4*(x+(1+4*x*x)^(-0.5))^(2))^0.5)+0.5*(4*(x+(1+4*x*x)^(-0.5))^(2)+1)^0.5-1.5 <1.3*((50-x*x-1/(4*x*x+1))^(2)+x*x)^0.5 .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
0.25 * ln ( 2 * x + 2 * ( 1 + 4 * x * x ) ^ ( -0.5 ) + ( 1 + 4 * ( x + ( 1 + 4 * x * x ) ^ ( -0.5 ) ) ^ ( 2 ) ) ^ 0.5 ) + 0.5 * ( 4 * ( x + ( 1 + 4 * x * x ) ^ ( -0.5 ) ) ^ ( 2 ) + 1 ) ^ 0.5 - 1.5 <1.3 * ( ( 50 - x * x - 1 / ( 4 * x * x + 1 ) ) ^ ( 2 ) + x * x ) ^ 0.5 (1)
From the definition field of ln
2 * x + 2 * ( 1 + 4 * x * x ) ^ ( -0.5 ) + ( 1 + 4 * ( x + ( 1 + 4 * x * x ) ^ ( -0.5 ) ) ^ ( 2 ) ) ^ 0.5 > 0 (2 )
From the definition field of divisor
4 * x * x + 1 ≠ 0 (3 )
From inequality(1):
x ∈ R (R is all real numbers),that is, in the real number range, the inequality is always established!
From inequality(2):
x > -2.683192
From inequality(3):
x ∈ R (R为全体实数),即在实数范围内,不等式恒成立!
From inequalities (1) and (2)
x > -2.683192 (4)
From inequalities (3) and (4)
x > -2.683192 (5)
The final solution set is :
x > -2.683192Your problem has not been solved here? Please take a look at the hot problems !