/ 2 4 / 2\ \ | 2*x 4*x *atan\x / / 2\| 4*|------ - ------------- + atan\x /| | 4 4 | \1 + x 1 + x / ------------------------------------- 4 1 + x
/ 4 6 / 2\\ | 12*x 2 / 2\ 16*x *atan\x /| 8*x*|3 - ------ - 10*x *atan\x / + --------------| | 4 4 | \ 1 + x 1 + x / -------------------------------------------------- 2 / 4\ \1 + x /