/ 4*x \ lim |-----| x->0+\1 + x/
Limit((4*x)/(1 + x), x, 0)
0
= 2.93727144208228e-28
/ 4*x \ lim |-----| x->0-\1 + x/
= -2.38544570312941e-29
2.93727144208228e-28