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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/x-((3/x)/x)-3 = 0
2/x-3*x^-2-3 = 0
2*x^-1-3*x^-2-3 = 0
t_1 = x^-1
2*t_1^1-3*t_1^2-3 = 0
2*t_1-3*t_1^2-3 = 0
DELTA = 2^2-(-3*(-3)*4)
DELTA = -32
DELTA < 0
x belongs to the empty set
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