/ 2\ |x + 3*x | lim |--------| x->0+| 2 | \x - 2*x/
Limit((x + 3*x^2)/(x^2 - 2*x), x, 0)
= -1/2
-1/2
= -0.5
/ 2\ |x + 3*x | lim |--------| x->0-| 2 | \x - 2*x/
-0.5