x*acos(8*x)
8*x - -------------- + acos(8*x) ___________ / 2 \/ 1 - 64*x
/ 2 \ | 32*x | -16*|1 + ---------| | 2| \ 1 - 64*x / ------------------- ___________ / 2 \/ 1 - 64*x
/ 2 \ | 48*x | -2048*x*|1 + ---------| | 2| \ 1 - 64*x / ----------------------- 3/2 / 2\ \1 - 64*x /