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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(4*x-14)/x-3 = x-2 // - x-2
(4*x-14)/x-x-3+2 = 0
(4*x-14)/x+(-x*x)/x+(-3*x)/x+(2*x)/x = 0
4*x-x*x-3*x+2*x-14 = 0
4*x-x^2-3*x+2*x-14 = 0
x-x^2+2*x-14 = 0
3*x-x^2-14 = 0
3*x-x^2-14 = 0
3*x-x^2-14 = 0
DELTA = 3^2-(-14*(-1)*4)
DELTA = -47
DELTA < 0
1 = 0
1/x = 0
1/x = 0 // * x
1 = 0
1 = 0
x belongs to the empty set
x belongs to the empty set
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