/ 49*x*(-5 + 4*pi*x)\ -7*|8*pi + ------------------| | 2 | \ 1 - 49*x / ------------------------------ ___________ / 2 \/ 1 - 49*x
// 2 \ \ || 147*x | | 343*||-1 + ----------|*(-5 + 4*pi*x) - 12*pi*x| || 2| | \\ -1 + 49*x / / ----------------------------------------------- 3/2 / 2\ \1 - 49*x /