2=7/w-2

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Solution for 2=7/w-2 equation: 


D( w )

w = 0

w = 0

w = 0

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

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

2-(7/w)+2 = 0

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

-7*w^-1 = -4 // : -7

w^-1 = 4/7

-1 < 0

1/(w^1) = 4/7 // * w^1

1 = 4/7*w^1 // : 4/7

7/4 = w^1

w = 7/4

w = 7/4

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