/ 3 \ |x + 3*x| lim |--------| x->-1+| 4 | \-1 + x /
Limit((x^3 + 3*x)/(-1 + x^4), x, -1)
False
= oo
/ 3 \ |x + 3*x| lim |--------| x->-1+| 4 | \-1 + x /
oo
= 150.998327833148
/ 3 \ |x + 3*x| lim |--------| x->-1-| 4 | \-1 + x /
-oo
= -150.998360727043
= -150.998360727043