2/3 / 4\ 4*x + atan\x /
4*x^(2/3) + atan(x^4)
3 8 4*x ------- + ------ 3 ___ 8 3*\/ x 1 + x
/ 10 2 \ | 2 8*x 3*x | 4*|- ------ - --------- + ------| | 4/3 2 8| | 9*x / 8\ 1 + x | \ \1 + x / /
/ 9 17 \ | 4 52*x 3*x 64*x | 8*|------- - --------- + ------ + ---------| | 7/3 2 8 3| |27*x / 8\ 1 + x / 8\ | \ \1 + x / \1 + x / /