x*asin(3*x)
3*x ------------- + asin(3*x) __________ / 2 \/ 1 - 9*x
/ 2 \ | 9*x | 3*|2 + --------| | 2| \ 1 - 9*x / ---------------- __________ / 2 \/ 1 - 9*x
/ 2 \ | 27*x | 27*x*|4 + --------| | 2| \ 1 - 9*x / ------------------- 3/2 / 2\ \1 - 9*x /