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D( w )
w^2-1 = 0
w^2-1 = 0
w^2-1 = 0
1*w^2 = 1 // : 1
w^2 = 1
w^2 = 1 // ^ 1/2
abs(w) = 1
w = 1 or w = -1
w in (-oo:-1) U (-1:1) U (1:+oo)
(3*w-3)/(w^2-1)-(2*w)+6 = 0
(3*w-3)/(w^2-1)-2*w+6 = 0
(3*w-3)/(w^2-1)+(-2*w*(w^2-1))/(w^2-1)+(6*(w^2-1))/(w^2-1) = 0
6*(w^2-1)-2*w*(w^2-1)+3*w-3 = 0
6*w^2-2*w^3+5*w-6-3 = 0
6*w^2-2*w^3+5*w-9 = 0
6*w^2-2*w^3+5*w-9 = 0
6*w^2-2*w^3+5*w-9 = 0
{ 1, -1, 3, -3, 9, -9 }
1
w = 1
6*w^2-2*w^3+5*w-9 = 0
1
w-1
4*w-2*w^2+9
6*w^2-2*w^3+5*w-9
w-1
2*w^3-2*w^2
4*w^2+5*w-9
4*w-4*w^2
9*w-9
9-9*w
0
4*w-2*w^2+9 = 0
DELTA = 4^2-(-2*4*9)
DELTA = 88
DELTA > 0
w = (88^(1/2)-4)/(-2*2) or w = (-88^(1/2)-4)/(-2*2)
w = (2*22^(1/2)-4)/(-4) or w = (-2*22^(1/2)-4)/(-4)
w in { (2*22^(1/2)-4)/(-4), (-2*22^(1/2)-4)/(-4), 1}
(w-((2*22^(1/2)-4)/(-4)))*(w-((-2*22^(1/2)-4)/(-4)))*(w-1) = 0
((w-((2*22^(1/2)-4)/(-4)))*(w-((-2*22^(1/2)-4)/(-4)))*(w-1))/(w^2-1) = 0
((w-((2*22^(1/2)-4)/(-4)))*(w-((-2*22^(1/2)-4)/(-4)))*(w-1))/(w^2-1) = 0 // * w^2-1
(w-((2*22^(1/2)-4)/(-4)))*(w-((-2*22^(1/2)-4)/(-4)))*(w-1) = 0
( w-((-2*22^(1/2)-4)/(-4)) )
w-((-2*22^(1/2)-4)/(-4)) = 0 // + (-2*22^(1/2)-4)/(-4)
w = (-2*22^(1/2)-4)/(-4)
( w-((2*22^(1/2)-4)/(-4)) )
w-((2*22^(1/2)-4)/(-4)) = 0 // + (2*22^(1/2)-4)/(-4)
w = (2*22^(1/2)-4)/(-4)
( w-1 )
w-1 = 0 // + 1
w = 1
w in { 1}
w in { (-2*22^(1/2)-4)/(-4), (2*22^(1/2)-4)/(-4) }
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