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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(1/3)*(4*x-5)-(1/x) = (3/2)*x-2 // - (3/2)*x-2
(1/3)*(4*x-5)-((3/2)*x)-(1/x)+2 = 0
(1/3)*(4*x-5)+(-3/2)*x-x^-1+2 = 0
1/3*(4*x-5)+(-3*x)/2-1/x+2 = 0
(1/3*2*x*(4*x-5))/(2*x)+(-3*x*x)/(2*x)+(-1*2)/(2*x)+(2^2*x)/(2*x) = 0
1/3*2*x*(4*x-5)-3*x*x+2^2*x-1*2 = 0
4*x-1/3*x^2-10/3*x-2 = 0
2/3*x-1/3*x^2-2 = 0
2/3*x-1/3*x^2-2 = 0
2/3*x-1/3*x^2-2 = 0
DELTA = (2/3)^2-(-2*(-1/3)*4)
DELTA = -20/9
DELTA < 0
1 = 0
1/(2*x) = 0
1/(2*x) = 0 // * 2*x
1 = 0
x belongs to the empty set
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