8/15=4/w

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Solution for 8/15=4/w equation: 


D( w )

w = 0

w = 0

w = 0

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

8/15 = 4/w // - 4/w

8/15-(4/w) = 0

8/15-4*w^-1 = 0

-4*w^-1 = -8/15 // : -4

w^-1 = 2/15

-1 < 0

1/(w^1) = 2/15 // * w^1

1 = 2/15*w^1 // : 2/15

15/2 = w^1

w = 15/2

w = 15/2

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