sec(asin(x))
x ----------- 3/2 / 2\ \1 - x /
2 3*x 1 + ------ 2 1 - x ----------- 3/2 / 2\ \1 - x /
/ 2 \ | 5*x | 3*x*|3 + ------| | 2| \ 1 - x / ---------------- 5/2 / 2\ \1 - x /