/ -x \ | x 2 | lim |2 - --------| x->0+| 3 | \ x + 3*x/
Limit(2^x - 2^(-x)/(x^3 + 3*x), x, 0)
/ -x \ | x 2 | lim |2 - --------| x->0+| 3 | \ x + 3*x/
-oo
= -49.0974803789382
/ -x \ | x 2 | lim |2 - --------| x->0-| 3 | \ x + 3*x/
oo
= 51.5595944383335
= 51.5595944383335