/ 2 \ | x + x | lim |-------------| x->-1+\1 + cos(pi*x)/
Limit((x + x^2)/(1 + cos(pi*x)), x, -1)
/ 2 \ | x + x | lim |-------------| x->-1+\1 + cos(pi*x)/
-oo
= -30.3974515595704
/ 2 \ | x + x | lim |-------------| x->-1-\1 + cos(pi*x)/
oo
= 30.802750913698
= 30.802750913698