6=-1/u+4

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Solution for 6=-1/u+4 equation: 


D( u )

u = 0

u = 0

u = 0

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

6 = 4-1/u // - 4-1/u

6-(-1/u)-4 = 0

u^-1-4+6 = 0

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

u^-1 = -2

-1 < 0

1/(u^1) = -2 // * u^1

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

-1/2 = u^1

u = -1/2

u = -1/2

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