8=-7/w-7

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Solution for 8=-7/w-7 equation: 


D( w )

w = 0

w = 0

w = 0

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

8 = -7/w-7 // + -7/w-7

7-(-7/w)+8 = 0

7*w^-1+7+8 = 0

7*w^-1 = -15 // : 7

w^-1 = -15/7

-1 < 0

1/(w^1) = -15/7 // * w^1

1 = -15/7*w^1 // : -15/7

-7/15 = w^1

w = -7/15

w = -7/15

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