1/LN(x) + 1/LN(x)^2 = 2
C.E. x > 0
LN(x) = t
1/t + 1/t^2 = 2
t ≠ 0
(1/t + 1/t^2 = 2)·t^2
t + 1 = 2·t^2
2·t^2 - (t + 1) = 0
2·t^2 - t - 1 = 0
(t - 1)·(2·t + 1) = 0
t = - 1/2 ∨ t = 1
x = e ∨ x = e^(- 1/2)
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