asin(x - 1) ----------- 2
1 ------------------- ______________ / 2 2*\/ 1 - (x - 1)
-1 + x -------------------- 3/2 / 2\ 2*\1 - (-1 + x) /
2 3*(-1 + x) 1 + ------------- 2 1 - (-1 + x) -------------------- 3/2 / 2\ 2*\1 - (-1 + x) /