acos(x) ------- x
1 acos(x) - ------------- - ------- ________ 2 / 2 x x*\/ 1 - x
1 2*acos(x) 2 - ----------- + --------- + -------------- 3/2 3 ________ / 2\ x 2 / 2 \1 - x / x *\/ 1 - x
6*acos(x) 6 3*x 2 - --------- - -------------- - ----------- + ------------- 4 ________ 5/2 3/2 x 3 / 2 / 2\ / 2\ x *\/ 1 - x \1 - x / x*\1 - x /