... + 2nπi = 2nπi; Ln 1 = 0;(b) ln4 = 1.386 + 2nπi; Ln 4 = 1.386 (c) If r is real, thenln r = the usual value of ln r + 2nπi; Ln r = ln r(d) lni = πi /2 + 2nπi; Ln i = πi /2; (e) ln(-1) = πi + 2nπi; ... this to OıÙÛC11+z 2 dz where C is the circle |z| = 3.Exercise Set 4p. 8 32 #1–7 odd, 17, 23 , 29 p. 837 # 1, 5, 9, 11, 13, 15p. 8 42 # 1, 3, 5, 7, 11, 21 5. Cauchy's Integral ... ıÙÛCf(z) dz + ıÙÛDf(z) dz 12 Exercise Set 3p. 817 #1, 3, 5, 11, 13, 17, 21 , 23 –31 odd, 35, 37, 45p. 821 #1, 5, 7, 11, 13, 15, 23 Hand In1. Find functions f that do the following:(a)...