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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3/x-((11/3)*x)-1+5 = -1 // + 1
3/x-((11/3)*x)-1+1+5 = 0
(-11/3)*x+3/x-1+1+5 = 0
3*x^-1-11/3*x^1+5*x^0 = 0
(5*x^1-11/3*x^2+3*x^0)/(x^1) = 0 // * x^2
x^1*(5*x^1-11/3*x^2+3*x^0) = 0
x^1
(-11/3)*x^2+5*x+3 = 0
(-11/3)*x^2+5*x+3 = 0
DELTA = 5^2-(3*4*(-11/3))
DELTA = 69
DELTA > 0
x = (69^(1/2)-5)/(2*(-11/3)) or x = (-69^(1/2)-5)/(2*(-11/3))
x = -3/22*(69^(1/2)-5) or x = 3/22*(69^(1/2)+5)
x in { -3/22*(69^(1/2)-5), 3/22*(69^(1/2)+5)}
x in { -3/22*(69^(1/2)-5), 3/22*(69^(1/2)+5) }
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