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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/x+3/4-3 = (17/2)*x // - (17/2)*x
2/x-((17/2)*x)+3/4-3 = 0
(-17/2)*x+2/x+3/4-3 = 0
2*x^-1-17/2*x^1-9/4*x^0 = 0
(2*x^0-17/2*x^2-9/4*x^1)/(x^1) = 0 // * x^2
x^1*(2*x^0-17/2*x^2-9/4*x^1) = 0
x^1
(-17/2)*x^2+(-9/4)*x+2 = 0
(-17/2)*x^2+(-9/4)*x+2 = 0
DELTA = (-9/4)^2-(2*4*(-17/2))
DELTA = 1169/16
DELTA > 0
x = ((1169/16)^(1/2)-(-9/4))/(2*(-17/2)) or x = (-(-9/4)-(1169/16)^(1/2))/(2*(-17/2))
x = ((1169/16)^(1/2)+9/4)/(-17) or x = (9/4-(1169/16)^(1/2))/(-17)
x in { ((1169/16)^(1/2)+9/4)/(-17), (9/4-(1169/16)^(1/2))/(-17)}
x in { ((1169/16)^(1/2)+9/4)/(-17), (9/4-(1169/16)^(1/2))/(-17) }
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