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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/x+2 = (4/3)*x+13/6 // - (4/3)*x+13/6
2/x-((4/3)*x)-(13/6)+2 = 0
(-4/3)*x+2/x-13/6+2 = 0
2*x^-1-4/3*x^1-1/6*x^0 = 0
(2*x^0-4/3*x^2-1/6*x^1)/(x^1) = 0 // * x^2
x^1*(2*x^0-4/3*x^2-1/6*x^1) = 0
x^1
(-4/3)*x^2+(-1/6)*x+2 = 0
(-4/3)*x^2+(-1/6)*x+2 = 0
DELTA = (-1/6)^2-(2*4*(-4/3))
DELTA = 385/36
DELTA > 0
x = ((385/36)^(1/2)-(-1/6))/(2*(-4/3)) or x = (-(-1/6)-(385/36)^(1/2))/(2*(-4/3))
x = -3/8*((385/36)^(1/2)+1/6) or x = -3/8*(1/6-(385/36)^(1/2))
x in { -3/8*((385/36)^(1/2)+1/6), -3/8*(1/6-(385/36)^(1/2))}
x in { -3/8*((385/36)^(1/2)+1/6), -3/8*(1/6-(385/36)^(1/2)) }
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