________ 2 / 2 x + x*asin(x) + \/ 1 - x
x^2 + x*asin(x) + sqrt(1 - x^2)
2*x + asin(x)
1 2 + ----------- ________ / 2 \/ 1 - x
x ----------- 3/2 / 2\ \1 - x /