2=-7/w-7

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Solution for 2=-7/w-7 equation: 


D( w )

w = 0

w = 0

w = 0

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

2 = -7/w-7 // + -7/w-7

2-(-7/w)+7 = 0

7*w^-1+2+7 = 0

7*w^-1 = -9 // : 7

w^-1 = -9/7

-1 < 0

1/(w^1) = -9/7 // * w^1

1 = -9/7*w^1 // : -9/7

-7/9 = w^1

w = -7/9

w = -7/9

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