7=(1/w)-4

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Solution for 7=(1/w)-4 equation: 


D( w )

w = 0

w = 0

w = 0

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

7 = 1/w-4 // - 1/w-4

4-(1/w)+7 = 0

4-w^-1+7 = 0

-1*w^-1 = -11 // : -1

w^-1 = 11

-1 < 0

1/(w^1) = 11 // * w^1

1 = 11*w^1 // : 11

1/11 = w^1

w = 1/11

w = 1/11

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