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D( x )
x = 0
x^2 = 0
x = 0
x = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
x-(3*x)+(2*x)/(x^2)+4/x-3 = 0
x-3*x+(2*x)/(x^2)+4/x-3 = 0
6*x^-1-2*x^1-3*x^0 = 0
(6*x^0-2*x^2-3*x^1)/(x^1) = 0 // * x^2
x^1*(6*x^0-2*x^2-3*x^1) = 0
x^1
6-2*x^2-3*x = 0
6-2*x^2-3*x = 0
DELTA = (-3)^2-(-2*4*6)
DELTA = 57
DELTA > 0
x = (57^(1/2)+3)/(-2*2) or x = (3-57^(1/2))/(-2*2)
x = (57^(1/2)+3)/(-4) or x = (3-57^(1/2))/(-4)
x in { (57^(1/2)+3)/(-4), (3-57^(1/2))/(-4)}
x in { (57^(1/2)+3)/(-4), (3-57^(1/2))/(-4) }
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