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D( w )
w-5 = 0
3*w^2-(19*w)+20 = 0
3*w-4 = 0
w-5 = 0
w-5 = 0
w-5 = 0 // + 5
w = 5
3*w^2-(19*w)+20 = 0
3*w^2-(19*w)+20 = 0
3*w^2-19*w+20 = 0
3*w^2-19*w+20 = 0
DELTA = (-19)^2-(3*4*20)
DELTA = 121
DELTA > 0
w = (121^(1/2)+19)/(2*3) or w = (19-121^(1/2))/(2*3)
w = 5 or w = 4/3
3*w-4 = 0
3*w-4 = 0
3*w-4 = 0 // + 4
3*w = 4 // : 3
w = 4/3
w in (-oo:4/3) U (4/3:5) U (5:+oo)
w/(w-5)-((3*w)/(3*w-4)) = (w-3)/(3*w^2-(19*w)+20) // - (w-3)/(3*w^2-(19*w)+20)
w/(w-5)-((3*w)/(3*w-4))-((w-3)/(3*w^2-(19*w)+20)) = 0
w/(w-5)-3*w*(3*w-4)^-1-((w-3)/(3*w^2-19*w+20)) = 0
w/(w-5)+(-3*w)/(3*w-4)+(-1*(w-3))/(3*w^2-19*w+20) = 0
3*w^2-19*w+20 = 0
3*w^2-19*w+20 = 0
3*w^2-19*w+20 = 0
DELTA = (-19)^2-(3*4*20)
DELTA = 121
DELTA > 0
w = (121^(1/2)+19)/(2*3) or w = (19-121^(1/2))/(2*3)
w = 5 or w = 4/3
(w-4/3)*(w-5) = 0
w/(w-5)+(-3*w)/(3*w-4)+(-1*(w-3))/((w-4/3)*(w-5)) = 0
(w*(3*w-4)*(w-4/3))/((w-5)*(3*w-4)*(w-4/3))+(-3*w*(w-5)*(w-4/3))/((w-5)*(3*w-4)*(w-4/3))+(-1*(w-3)*(3*w-4))/((w-5)*(3*w-4)*(w-4/3)) = 0
w*(3*w-4)*(w-4/3)-3*w*(w-5)*(w-4/3)-1*(w-3)*(3*w-4) = 0
11*w^2-3*w^2-44/3*w+13*w-12 = 0
8*w^2-5/3*w-12 = 0
8*w^2-5/3*w-12 = 0
8*w^2-5/3*w-12 = 0
DELTA = (-5/3)^2-(-12*4*8)
DELTA = 3481/9
DELTA > 0
w = ((3481/9)^(1/2)+5/3)/(2*8) or w = (5/3-(3481/9)^(1/2))/(2*8)
w = 4/3 or w = -9/8
(w+9/8)*(w-4/3) = 0
((w+9/8)*(w-4/3))/((w-5)*(3*w-4)*(w-4/3)) = 0
((w+9/8)*(w-4/3))/((w-5)*(3*w-4)*(w-4/3)) = 0 // * (w-5)*(3*w-4)*(w-4/3)
(w+9/8)*(w-4/3) = 0
( w+9/8 )
w+9/8 = 0 // - 9/8
w = -9/8
( w-4/3 )
w-4/3 = 0 // + 4/3
w = 4/3
w in { 4/3}
w = -9/8
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