4=-10-2/u-9

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Solution for 4=-10-2/u-9 equation: 


D( u )

u = 0

u = 0

u = 0

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

4 = -(2/u)-10-9 // + -(2/u)-10-9

2/u+4+9+10 = 0

2*u^-1 = -23 // : 2

u^-1 = -23/2

-1 < 0

1/(u^1) = -23/2 // * u^1

1 = -23/2*u^1 // : -23/2

-2/23 = u^1

u = -2/23

u = -2/23

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