3 2 8*x + -- - acos(x) 3 x
8*x^3 + 2/x^3 - acos(x)
1 6 2 ----------- - -- + 24*x ________ 4 / 2 x \/ 1 - x
24 x -- + 48*x + ----------- 5 3/2 x / 2\ \1 - x /
2 1 120 3*x 48 + ----------- - --- + ----------- 3/2 6 5/2 / 2\ x / 2\ \1 - x / \1 - x /