L H N xd U 0 : dx H L - N 1 - / : 1 2 mat i 1 N range U i el L dx - ( dx i * + : for U 3 1 line : $xfxsin1.5^2x*sin+:$ $L5\pi *-2/:H7\pi *2/:N1000:13matxLHNxd:21line$ $MxfvectorizeIm:$ $IMxMaugment:$ $QxxfvectorizeReaugment:$

Expose the missing regions ...