(1-1/x)^(2*x)
((1 - 1*1)/x)^(2*x)
(1 - 1/x)^(2*x)
2*x / 1\ lim |1 - 1*-| x->oo\ x/
Limit((1 - 1/x)^(2*x), x, oo, dir='-')
-2 e