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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3/4 = x+5/x-2 // - x+5/x-2
3/4-x-(5/x)+2 = 0
3/4-x-5*x^-1+2 = 0
11/4*x^0-1*x^1-5*x^-1 = 0
(11/4*x^1-1*x^2-5*x^0)/(x^1) = 0 // * x^2
x^1*(11/4*x^1-1*x^2-5*x^0) = 0
x^1
(11/4)*x-x^2-5 = 0
(11/4)*x-x^2-5 = 0
DELTA = (11/4)^2-(-5*(-1)*4)
DELTA = -199/16
DELTA < 0
x in { }
x belongs to the empty set
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