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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2*x-(4/x)-3 = 4/3 // - 4/3
2*x-(4/x)-(4/3)-3 = 0
2*x-4*x^-1-4/3-3 = 0
2*x^1-4*x^-1-13/3*x^0 = 0
(2*x^2-13/3*x^1-4*x^0)/(x^1) = 0 // * x^2
x^1*(2*x^2-13/3*x^1-4*x^0) = 0
x^1
2*x^2+(-13/3)*x-4 = 0
2*x^2+(-13/3)*x-4 = 0
DELTA = (-13/3)^2-(-4*2*4)
DELTA = 457/9
DELTA > 0
x = ((457/9)^(1/2)-(-13/3))/(2*2) or x = (-(-13/3)-(457/9)^(1/2))/(2*2)
x = ((457/9)^(1/2)+13/3)/4 or x = (13/3-(457/9)^(1/2))/4
x in { (13/3-(457/9)^(1/2))/4, ((457/9)^(1/2)+13/3)/4}
x in { (13/3-(457/9)^(1/2))/4, ((457/9)^(1/2)+13/3)/4 }
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