/ 2 \ -x*\-126 + 8*x + 9*x/ ----------------------- 6
/ 2\ x*\126 - 9*x - 8*x / -------------------- 6
/ _____\ / _____\ | 9 3*\/ 457 | | 9 3*\/ 457 | x*|x + -- - ---------|*|x + -- + ---------| \ 16 16 / \ 16 16 /
3 2 4*x 3*x 21*x - ---- - ---- 3 2