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