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