8=-2/u

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Solution for 8=-2/u equation: 


D( u )

u = 0

u = 0

u = 0

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

8 = -2/u // + -2/u

8-(-2/u) = 0

2*u^-1+8 = 0

2*u^-1 = -8 // : 2

u^-1 = -4

-1 < 0

1/(u^1) = -4 // * u^1

1 = -4*u^1 // : -4

-1/4 = u^1

u = -1/4

u = -1/4

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