____________ x / / ___\ lim \/ cos\\/ x / x->oo
Limit(cos(sqrt(x))^(1/x), x, oo, dir='-')
____________ x / / ___\ lim \/ cos\\/ x / x->0+
-1/2 e
= 0.606530659712633
____________ x / / ___\ lim \/ cos\\/ x / x->0-
-1/2 e
= (0.606530659712633 + 0.0j)
= (0.606530659712633 + 0.0j)