Exercise 7.1

• Exercise 7.1 Question no 1 to 6 19:10
• Exercise 7.1 Question no 7 to 12 13:35
• Exercise 7.1 Question no 14 and 15 9:21

Exercise 7.2

• Exercise 7.2 Question no 1 to 6 17:01
• Exercise 7.2 Question no 7 to 10 16:10

Exercise 7.3

• Exercise 7.3 Question no 1 to 3 14:46
• Exercise 7.3 Question no 4 to 7 20:40
• Exercise 7.3 Question no 8 and 9 13:45
• Exercise 7.3 Question no 10 to 12 18:17

Exercise 7.4

• Exercise 7.4 Question no 1 and 2 14:56
• Exercise 7.4 Question no 3 to 5 9:19
• Exercise 7.4 Question no 6 to 9 9:55

Exercise 7.5

• Exercise 7.5 Question no 1 to 6 11:03
• Exercise 7.5 Question no 7 to 15 4:23