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Assignment:Find the solution set of inequality (12.5x*x/(4-x*x)-3x*x+2)/(25x/(4-x*x)-5*x) >(2.5x*x*x/(4-x*x)+x*x+1.5x+1+(2*(25x*x)/(4*(4-x*x))-2.5x*x+x*x+1)/(1+x*x))/((-5x*(1-5/(4-x*x)))/(1+x*x)) .
Question type: Inequality
Solution:
The inequality can be reduced to 1 inequality:
( 12.5 * x * x / ( 4 - x * x ) - 3 * x * x + 2 ) / ( 25 * x / ( 4 - x * x ) - 5 * x ) > ( 2.5 * x * x * x / ( 4 - x * x ) + x * x + 1.5 * x + 1 + ( 2 * ( 25 * x * x ) / ( 4 * ( 4 - x * x ) ) - 2.5 * x * x + x * x + 1 ) / ( 1 + x * x ) ) / ( ( -5 * x * ( 1 - 5 / ( 4 - x * x ) ) ) / ( 1 + x * x ) ) (1)
From the definition field of divisor
4 - x * x ≠ 0 (2 )
From the definition field of divisor
4 - x * x ≠ 0 (3 )
From the definition field of divisor
25 * x / ( 4 - x * x ) - 5 * x ≠ 0 (4 )
From the definition field of divisor
4 - x * x ≠ 0 (5 )
From the definition field of divisor
4 * ( 4 - x * x ) ≠ 0 (6 )
From the definition field of divisor
1 + x * x ≠ 0 (7 )
From the definition field of divisor
4 - x * x ≠ 0 (8 )
From the definition field of divisor
1 + x * x ≠ 0 (9 )
From the definition field of divisor
( -5 * x * ( 1 - 5 / ( 4 - x * x ) ) ) / ( 1 + x * x ) ≠ 0 (10 )
From inequality(1):
-0.912584 < x < -0.654213 或 x > 2.802696
From inequality(2):
x < -2 或 -2 < x < 2 或 x > 2
From inequality(3):
x < -2 或 -2 < x < 2 或 x > 2
From inequality(4):
x < -2 或 -2 < x < 0 或 0 < x < 2 或 x > 2
From inequality(5):
x < -2 或 -2 < x < 2 或 x > 2
From inequality(6):
x < -2 或 -2 < x < 2 或 x > 2
From inequality(7):
x ∈ R (R为全体实数),即在实数范围内,不等式恒成立!
From inequality(8):
x < -2 或 -2 < x < 2 或 x > 2
From inequality(9):
x ∈ R (R为全体实数),即在实数范围内,不等式恒成立!
From inequality(10):
x < -2 或 -2 < x < 0 或 0 < x < 2 或 x > 2
From inequalities (1) and (2)
-0.912584 < x < -0.654213 或 x > 2.802696 (11)
From inequalities (3) and (11)
-0.912584 < x < -0.654213 或 x > 2.802696 (12)
From inequalities (4) and (12)
-0.912584 < x < -0.654213 或 x > 2.802696 (13)
From inequalities (5) and (13)
-0.912584 < x < -0.654213 或 x > 2.802696 (14)
From inequalities (6) and (14)
-0.912584 < x < -0.654213 或 x > 2.802696 (15)
From inequalities (7) and (15)
-0.912584 < x < -0.654213 或 x > 2.802696 (16)
From inequalities (8) and (16)
-0.912584 < x < -0.654213 或 x > 2.802696 (17)
From inequalities (9) and (17)
-0.912584 < x < -0.654213 或 x > 2.802696 (18)
From inequalities (10) and (18)
-0.912584 < x < -0.654213 或 x > 2.802696 (19)
The final solution set is :
-0.912584 < x < -0.654213 或 x > 2.802696Your problem has not been solved here? Please take a look at the hot problems !