/ 3 \ \x + 3/*atan(x)
(x^3 + 3)*atan(x)
3 x + 3 2 ------ + 3*x *atan(x) 2 1 + x
/ 3 \ | 3 + x 3*x | 2*x*|3*atan(x) - --------- + ------| | 2 2| | / 2\ 1 + x | \ \1 + x / /
/ / 2 \ \ | | 4*x | / 3\| | |-1 + ------|*\3 + x /| | 3 | 2| | | 9*x 9*x \ 1 + x / | 2*|3*atan(x) - --------- + ------ + ----------------------| | 2 2 2 | | / 2\ 1 + x / 2\ | \ \1 + x / \1 + x / /