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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
3/x-1 = (4/3)*x+2 // - (4/3)*x+2
3/x-((4/3)*x)-2-1 = 0
(-4/3)*x+3/x-2-1 = 0
3*x^-1-4/3*x^1-3*x^0 = 0
(3*x^0-4/3*x^2-3*x^1)/(x^1) = 0 // * x^2
x^1*(3*x^0-4/3*x^2-3*x^1) = 0
x^1
(-4/3)*x^2-3*x+3 = 0
(-4/3)*x^2-3*x+3 = 0
DELTA = (-3)^2-(3*4*(-4/3))
DELTA = 25
DELTA > 0
x = (25^(1/2)+3)/(2*(-4/3)) or x = (3-25^(1/2))/(2*(-4/3))
x = -3 or x = 3/4
x in { -3, 3/4}
x in { -3, 3/4 }
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