/ 2 \ lim \1 - 7*x + 5*x/ x->-1/3+
Limit(1 - 7*x^2 + 5*x, x, -1/3)
-13/9
= -1.44444444444444
/ 2 \ lim \1 - 7*x + 5*x/ x->-1/3-
-1.44444444444444