-2=4/w

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Solution for -2=4/w equation: 


D( w )

w = 0

w = 0

w = 0

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

-2 = 4/w // - 4/w

-(4/w)-2 = 0

-4*w^-1-2 = 0

-4*w^-1 = 2 // : -4

w^-1 = -1/2

-1 < 0

1/(w^1) = -1/2 // * w^1

1 = -1/2*w^1 // : -1/2

-2 = w^1

w = -2

w = -2

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