8/w=2/7

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Solution for 8/w=2/7 equation: 


D( w )

w = 0

w = 0

w = 0

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

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

8/w-(2/7) = 0

8/w-2/7 = 0

8*w^-1 = 2/7 // : 8

w^-1 = 1/28

-1 < 0

1/(w^1) = 1/28 // * w^1

1 = 1/28*w^1 // : 1/28

28 = w^1

w = 28

w = 28

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