/ 2 \ | E | lim |------| z->0+| 2| \9 + z /
Limit(E^2/(9 + z^2), z, 0)
2 e -- 9
= 0.821006233214517
/ 2 \ | E | lim |------| z->0-| 2| \9 + z /
0.821006233214517