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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(1/4)*x-(2/x) = 3 // - 3
(1/4)*x-(2/x)-3 = 0
(1/4)*x-2*x^-1-3 = 0
1/4*x^1-2*x^-1-3*x^0 = 0
(1/4*x^2-3*x^1-2*x^0)/(x^1) = 0 // * x^2
x^1*(1/4*x^2-3*x^1-2*x^0) = 0
x^1
(1/4)*x^2-3*x-2 = 0
(1/4)*x^2-3*x-2 = 0
DELTA = (-3)^2-(-2*4*(1/4))
DELTA = 11
DELTA > 0
x = (11^(1/2)+3)/(2*(1/4)) or x = (3-11^(1/2))/(2*(1/4))
x = 2*(11^(1/2)+3) or x = 2*(3-11^(1/2))
x in { 2*(3-11^(1/2)), 2*(11^(1/2)+3)}
x in { 2*(3-11^(1/2)), 2*(11^(1/2)+3) }
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