1 2 z 3 )= 1 8 z 7 July 8, 2019 16 32 64 128 Z-1 = z+1 1 + 1 = 2 + 2 = 3 3) 1/2 * z - 7 = 1 - 1/6 * z 1/2 * z - 7 = 1 - 1/6 * z