/ 3\ | 1 + x | lim |-------| x->1+| 4| \-1 + x /
Limit((1 + x^3)/(-1 + x^4), x, 1)
oo
= 75.501644701013
/ 3\ | 1 + x | lim |-------| x->1-| 4| \-1 + x /
-oo
= -75.5016666298757
75.501644701013