/ 3 + x \ lim |--------| x->-4+| 3| \-27 + x /
Limit((3 + x)/(-27 + x^3), x, -4)
1/91
= 0.010989010989011
/ 3 + x \ lim |--------| x->-4-| 3| \-27 + x /
0.010989010989011