/ 9\ x*asin\x /
9 9*x / 9\ ------------ + asin\x / _________ / 18 \/ 1 - x
/ 18 \ 8 | 9*x | 9*x *|10 + -------| | 18| \ 1 - x / ------------------- _________ / 18 \/ 1 - x
/ 36 18\ 7 | 243*x 324*x | 9*x *|80 + ---------- + -------| | 2 18| | / 18\ 1 - x | \ \1 - x / / -------------------------------- _________ / 18 \/ 1 - x