asin(1 - 2*x)
-2 ------------------- ________________ / 2 \/ 1 - (1 - 2*x)
-4*(-1 + 2*x) ------------------- 3/2 / 2\ \1 - (1 - 2*x) /
/ 2 \ | 3*(-1 + 2*x) | -8*|1 + --------------| | 2| \ 1 - (1 - 2*x) / ----------------------- 3/2 / 2\ \1 - (1 - 2*x) /