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D( w )
w = 0
w = 0
w = 0
w in (-oo:0) U (0:+oo)
(3/2)*w+4+12 = -(4/w+6) // + 4/w+6
(3/2)*w+4/w+4+6+12 = 0
3/2*w^1+4*w^-1+22*w^0 = 0
(3/2*w^2+22*w^1+4*w^0)/(w^1) = 0 // * w^2
w^1*(3/2*w^2+22*w^1+4*w^0) = 0
w^1
(3/2)*w^2+22*w+4 = 0
(3/2)*w^2+22*w+4 = 0
DELTA = 22^2-(4*4*(3/2))
DELTA = 460
DELTA > 0
w = (460^(1/2)-22)/(2*(3/2)) or w = (-460^(1/2)-22)/(2*(3/2))
w = (2*115^(1/2)-22)/3 or w = (-2*115^(1/2)-22)/3
w in { (-2*115^(1/2)-22)/3, (2*115^(1/2)-22)/3}
w in { (-2*115^(1/2)-22)/3, (2*115^(1/2)-22)/3 }
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