5 4 4 5 15*(x + 6) *acot (3*x) 5*(x + 6) *acot (3*x) - ---------------------- 2 1 + 9*x
/ 2 \ 3 3 | 2 15*(6 + x)*acot(3*x) 9*(6 + x) *(2 + 3*x*acot(3*x))| 10*(6 + x) *acot (3*x)*|2*acot (3*x) - -------------------- + ------------------------------| | 2 2 | | 1 + 9*x / 2\ | \ \1 + 9*x / /
/ / 2 2 \ \ | 3 | 2 6 36*x*acot(3*x) 36*x *acot (3*x)| | | 9*(6 + x) *|- acot (3*x) + -------- + -------------- + ----------------| | | 2 | 2 2 2 | 2 | 2 2 | 3 30*acot (3*x)*(6 + x) \ 1 + 9*x 1 + 9*x 1 + 9*x / 45*(6 + x) *(2 + 3*x*acot(3*x))*acot(3*x)| 30*(6 + x) *acot (3*x)*|2*acot (3*x) - --------------------- - ------------------------------------------------------------------------ + -----------------------------------------| | 2 2 2 | | 1 + 9*x / 2\ / 2\ | \ \1 + 9*x / \1 + 9*x / /