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D( x )
x^2 = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
2*x-((1/2)*x)+(3*x)/(x^2) = 0
2*x+(-1/2)*x+(3*x)/(x^2) = 0
3/2*x^1+3*x^-1 = 0
(3/2*x^2+3*x^0)/(x^1) = 0 // * x^2
x^1*(3/2*x^2+3*x^0) = 0
x^1
(3/2)*x^2+3 = 0
(3/2)*x^2+3 = 0
DELTA = 0^2-(3*4*(3/2))
DELTA = -18
DELTA < 0
x in { }
x belongs to the empty set
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