acos(4*x)*3
-12 -------------- ___________ / 2 \/ 1 - 16*x
-192*x -------------- 3/2 / 2\ \1 - 16*x /
/ 2 \ | 48*x | 192*|-1 + ----------| | 2| \ -1 + 16*x / --------------------- 3/2 / 2\ \1 - 16*x /