1 -- 2 x / 2\ lim \1 + 4*x / x->0+
Limit((1 + 4*x^2)^(x^(-2)), x, 0)
4 e
= 54.5981500331442
1 -- 2 x / 2\ lim \1 + 4*x / x->0-
54.5981500331442