/-1 + x\ lim |------| x->0+| 3| |-1 + -| \ x/
Limit((-1 + x)/(-1 + 3/x), x, 0)
0
= -8.46618747844271e-33
/-1 + x\ lim |------| x->0-| 3| |-1 + -| \ x/
= -1.75299472416747e-31
-8.46618747844271e-33