/ 2 \ 5 | / 1 \ x*(x - acot(x))| 14*(x - acot(x)) *|3*|1 + ------| - ---------------| | | 2| 2 | | \ 1 + x / / 2\ | \ \1 + x / /
/ / 1 \ \ | 18*x*|1 + ------|*(x - acot(x))| | 3 2 2 2 | 2| | 4 | / 1 \ (x - acot(x)) 4*x *(x - acot(x)) \ 1 + x / | 14*(x - acot(x)) *|15*|1 + ------| - -------------- + ------------------- - -------------------------------| | | 2| 2 3 2 | | \ 1 + x / / 2\ / 2\ / 2\ | \ \1 + x / \1 + x / \1 + x / /