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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(3/7)*x-2 = 2/x-3 // - 2/x-3
(3/7)*x-(2/x)-2+3 = 0
(3/7)*x-2*x^-1-2+3 = 0
3/7*x^1-2*x^-1+1*x^0 = 0
(3/7*x^2+1*x^1-2*x^0)/(x^1) = 0 // * x^2
x^1*(3/7*x^2+1*x^1-2*x^0) = 0
x^1
(3/7)*x^2+x-2 = 0
(3/7)*x^2+x-2 = 0
DELTA = 1^2-(-2*4*(3/7))
DELTA = 31/7
DELTA > 0
x = ((31/7)^(1/2)-1)/(2*(3/7)) or x = (-(31/7)^(1/2)-1)/(2*(3/7))
x = 7/6*((31/7)^(1/2)-1) or x = -7/6*((31/7)^(1/2)+1)
x in { -7/6*((31/7)^(1/2)+1), 7/6*((31/7)^(1/2)-1)}
x in { -7/6*((31/7)^(1/2)+1), 7/6*((31/7)^(1/2)-1) }
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