2=-(7/w-9)

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Solution for 2=-(7/w-9) equation: 


D( w )

w = 0

w = 0

w = 0

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

2 = -(7/w-9) // + 7/w-9

7/w-9+2 = 0

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

w^-1 = 1

-1 < 0

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

1 = 1*w^1 // : 1

1 = w^1

w = 1

w = 1

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