Please complete the following questions from the text: Problem 4.6 (a), (d) Problem 4.7 Problem 4.8 (i) and (iii) Problem 4.11 for plots (a) and (d) Problem 5.1 (a) and (d) Problem 5.2 (a) and (d) Problem 5.4 (a) and ( c) Problem 5.8 (a) and ( c) Problem 5.20 (a) and ( c) Problem 5.21 (a) and (b) ----