Exercises 4.1.
Exercise 4.1-8.
Exercise 4.1-9.
Exercise 4.1-10.
Exercise 4.2-1.
Exercise 4.2-2.
Exercise 4.2-3.
Exercise 4.2-4.
Exercise 4.2-5.
Exercise 4.2-6.
Exercise 4.2-7.
Exercise 4.2-9.
Exercise 4.2-10.
Exercise 4.2-11.
Exercise 4.2-12.
Exercise 4.2-13.
Exercise 4.2-14.