/ 3 \ | x | lim |------| x->1+| 3| \1 - x /
Limit(x^3/(1 - x^3), x, 1)
False
= -oo
-oo
= -51.0014668080224
/ 3 \ | x | lim |------| x->1-| 3| \1 - x /
oo
= 49.6681432208503
-51.0014668080224