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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
x-(3/x) = (3/2)*x-(1/2) // - (3/2)*x-(1/2)
x-((3/2)*x)-(3/x)+1/2 = 0
x+(-3/2)*x-3*x^-1+1/2 = 0
1/2*x^0-1/2*x^1-3*x^-1 = 0
(1/2*x^1-1/2*x^2-3*x^0)/(x^1) = 0 // * x^2
x^1*(1/2*x^1-1/2*x^2-3*x^0) = 0
x^1
(-1/2)*x^2+(1/2)*x-3 = 0
(-1/2)*x^2+(1/2)*x-3 = 0
DELTA = (1/2)^2-(-3*4*(-1/2))
DELTA = -23/4
DELTA < 0
x in { }
x belongs to the empty set
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