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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
8/x-(13/2)-2 = (3/2)*x-4 // - (3/2)*x-4
8/x-((3/2)*x)-(13/2)-2+4 = 0
(-3/2)*x+8/x-13/2-2+4 = 0
8*x^-1-3/2*x^1-9/2*x^0 = 0
(8*x^0-3/2*x^2-9/2*x^1)/(x^1) = 0 // * x^2
x^1*(8*x^0-3/2*x^2-9/2*x^1) = 0
x^1
(-3/2)*x^2+(-9/2)*x+8 = 0
(-3/2)*x^2+(-9/2)*x+8 = 0
DELTA = (-9/2)^2-(4*8*(-3/2))
DELTA = 273/4
DELTA > 0
x = ((273/4)^(1/2)-(-9/2))/(2*(-3/2)) or x = (-(-9/2)-(273/4)^(1/2))/(2*(-3/2))
x = ((273/4)^(1/2)+9/2)/(-3) or x = (9/2-(273/4)^(1/2))/(-3)
x in { ((273/4)^(1/2)+9/2)/(-3), (9/2-(273/4)^(1/2))/(-3)}
x in { ((273/4)^(1/2)+9/2)/(-3), (9/2-(273/4)^(1/2))/(-3) }
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