/ 3\ | 1 3*x | lim |- - + ----| x->-1+\ 2 2 /
Limit(-1/2 + (3*x^3)/2, x, -1)
-2
= -2
/ 3\ | 1 3*x | lim |- - + ----| x->-1-\ 2 2 /
-2.0