5*acos(x)
-5 ----------- ________ / 2 \/ 1 - x
-5*x ----------- 3/2 / 2\ \1 - x /
/ 2 \ | 3*x | -5*|1 + ------| | 2| \ 1 - x / --------------- 3/2 / 2\ \1 - x /