2*asin(x) + acos(x)
d --(2*asin(x) + acos(x)) dx
1 ----------- ________ / 2 \/ 1 - x
x ----------- 3/2 / 2\ \1 - x /
2 3*x 1 + ------ 2 1 - x ----------- 3/2 / 2\ \1 - x /