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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(x/2)*(x-3)-((2*x)/x)+4 = (x/4)*(x-3) // - (x/4)*(x-3)
(x/2)*(x-3)-((x/4)*(x-3))-((2*x)/x)+4 = 0
(x/2)*(x-3)-((x/4)*(x-3))-2+4 = 0
1/2*x*(x-3)-1*1/4*x*(x-3)-2+4 = 0
1/2*x*(x-3)-1*1/4*x*(x-3)-2+4 = 0
1/4*x^2-3/4*x-2+4 = 0
1/4*x^2-3/4*x+2 = 0
1/4*x^2-3/4*x+2 = 0
1/4*x^2-3/4*x+2 = 0
DELTA = (-3/4)^2-(1/4*2*4)
DELTA = -23/16
DELTA < 0
1 = 0
1 = 0
x belongs to the empty set
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