/ x \ lim asin|-----| x->0+ \4 + x/
Limit(asin(x/(4 + x)), x, 0)
0
= 4.85160343321503e-32
/ x \ lim asin|-----| x->0- \4 + x/
= -2.20619286785003e-34
4.85160343321503e-32