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D( x )
x <= 0
ln(x) = 0
x <= 0
ln(x) = 0
ln(x) = 0
ln(x) = ln(e^0)
x = e^0
x = 1
x in (0:1) U (1:+oo)
ln(x)-(3/ln(x)) = 2 // - 2
ln(x)-(3/ln(x))-2 = 0
ln(x)-3*(ln(x))^-1-2 = 0
k_1 = ln(x)
1*k_1^1-3*k_1^-1-2*k_1^0 = 0
(1*k_1^2-2*k_1^1-3*k_1^0)/(k_1^1) = 0 // * k_1^2
k_1^1*(1*k_1^2-2*k_1^1-3*k_1^0) = 0
k_1^1
k_1^2-2*k_1-3 = 0
k_1^2-2*k_1-3 = 0
DELTA = (-2)^2-(-3*1*4)
DELTA = 16
DELTA > 0
k_1 = (16^(1/2)+2)/(1*2) or k_1 = (2-16^(1/2))/(1*2)
k_1 = 3 or k_1 = -1
k_1 in { -1, 3}
ln(x) = -1
ln(x) = ln(e^-1)
x = e^-1
ln(x) = 3
ln(x) = ln(e^3)
x = e^3
x in { e^-1, e^3 }
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