/x + 1\ asin|-----| \ 2 /
asin((x + 1)/2)
1 --------------------- ______________ / 2 / (x + 1) 2* / 1 - -------- \/ 4
1 + x ------------------- 3/2 / 2\ | (1 + x) | 8*|1 - --------| \ 4 /
2 3*(1 + x) 4 + ------------ 2 (1 + x) 1 - -------- 4 -------------------- 3/2 / 2\ | (1 + x) | 32*|1 - --------| \ 4 /