x*asin(7*x)
7*x -------------- + asin(7*x) ___________ / 2 \/ 1 - 49*x
/ 2 \ | 49*x | 7*|2 + ---------| | 2| \ 1 - 49*x / ----------------- ___________ / 2 \/ 1 - 49*x
/ 2 \ | 147*x | 343*x*|4 - ----------| | 2| \ -1 + 49*x / ---------------------- 3/2 / 2\ \1 - 49*x /