asin(x) ------- 3
asin(x)/3
1 ------------- ________ / 2 3*\/ 1 - x
x ------------- 3/2 / 2\ 3*\1 - x /
/ 2 \ | 3*x | -|-1 + -------| | 2| \ -1 + x / ---------------- 3/2 / 2\ 3*\1 - x /