x*asin(x)
d --(x*asin(x)) dx
x ----------- + asin(x) ________ / 2 \/ 1 - x
2 x 2 + ------ 2 1 - x ----------- ________ / 2 \/ 1 - x
/ 2 \ | 3*x | x*|4 - -------| | 2| \ -1 + x / --------------- 3/2 / 2\ \1 - x /