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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3*x+4/x-2 = 5/6 // - 5/6
3*x+4/x-(5/6)-2 = 0
3*x+4/x-5/6-2 = 0
3*x^1+4*x^-1-17/6*x^0 = 0
(3*x^2-17/6*x^1+4*x^0)/(x^1) = 0 // * x^2
x^1*(3*x^2-17/6*x^1+4*x^0) = 0
x^1
3*x^2+(-17/6)*x+4 = 0
3*x^2+(-17/6)*x+4 = 0
DELTA = (-17/6)^2-(3*4*4)
DELTA = -1439/36
DELTA < 0
x in { }
x belongs to the empty set
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