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D( w )
w^2-(4*w) = 0
w^2-(3*w)+2 = 0
w^2-(4*w) = 0
w^2-(4*w) = 0
w^2-4*w = 0
w^2-4*w = 0
DELTA = (-4)^2-(0*1*4)
DELTA = 16
DELTA > 0
w = (16^(1/2)+4)/(1*2) or w = (4-16^(1/2))/(1*2)
w = 4 or w = 0
w^2-(3*w)+2 = 0
w^2-(3*w)+2 = 0
w^2-3*w+2 = 0
w^2-3*w+2 = 0
DELTA = (-3)^2-(1*2*4)
DELTA = 1
DELTA > 0
w = (1^(1/2)+3)/(1*2) or w = (3-1^(1/2))/(1*2)
w = 2 or w = 1
w in (-oo:0) U (0:1) U (1:2) U (2:4) U (4:+oo)
(((4*w+8)/(w^2-(4*w)))*(w^2-(3*w)-4))/(w^2-(3*w)+2) = 0
(((4*w+8)/(w^2-4*w))*(w^2-3*w-4))/(w^2-3*w+2) = 0
((4*w+8)*(w^2-3*w-4))/((w^2-4*w)*(w^2-3*w+2)) = 0
w^2-4*w = 0
w*(w-4) = 0
w-4 = 0 // + 4
w = 4
w*(w-4) = 0
w^2-3*w-4 = 0
w^2-3*w-4 = 0
DELTA = (-3)^2-(-4*1*4)
DELTA = 25
DELTA > 0
w = (25^(1/2)+3)/(1*2) or w = (3-25^(1/2))/(1*2)
w = 4 or w = -1
(w+1)*(w-4) = 0
w^2-3*w+2 = 0
w^2-3*w+2 = 0
DELTA = (-3)^2-(1*2*4)
DELTA = 1
DELTA > 0
w = (1^(1/2)+3)/(1*2) or w = (3-1^(1/2))/(1*2)
w = 2 or w = 1
(w-1)*(w-2) = 0
((4*w+8)*(w+1)*(w-4))/(w*(w-4)*(w-1)*(w-2)) = 0
( 4*w+8 )
4*w+8 = 0 // - 8
4*w = -8 // : 4
w = -8/4
w = -2
( w+1 )
w+1 = 0 // - 1
w = -1
( w-4 )
w-4 = 0 // + 4
w = 4
w in { 4}
w in { -2, -1 }
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