Z 2 2z 1 0 July 8, 2019 16 32 64 128 Z 3 2z 2 2z 1 0 Z 4 2z 2 1 0 Z 2 2z 1 2i 0 Z 2 2z 1 m 0 Z 2 2z cos theta 1 0 Z 4 z 3 2z 2 z 1 0 2z-1 = z-2 Z / 2z