-4w+8/w-2

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Solution for -4w+8/w-2 equation: 


D( w )

w = 0

w = 0

w = 0

w in (-oo:0) U (0:+oo)

8/w-4*w-2 = 0

8*w^-1-4*w^1-2*w^0 = 0

(8*w^0-4*w^2-2*w^1)/(w^1) = 0 // * w^2

w^1*(8*w^0-4*w^2-2*w^1) = 0

w^1

8-4*w^2-2*w = 0

8-4*w^2-2*w = 0

DELTA = (-2)^2-(-4*4*8)

DELTA = 132

DELTA > 0

w = (132^(1/2)+2)/(-4*2) or w = (2-132^(1/2))/(-4*2)

w = (2*33^(1/2)+2)/(-8) or w = (2-2*33^(1/2))/(-8)

w in { (2*33^(1/2)+2)/(-8), (2-2*33^(1/2))/(-8)} 

w in { (2*33^(1/2)+2)/(-8), (2-2*33^(1/2))/(-8) }

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