Problem 1 is related to 3.1.17 and 3.1.18.
Problem 2 is related to 3.5.16 and 3.5.17.
Problem 3 is related to 3.8.10.
Problem 4 and 5 are related to 3.4.26

Here is the statistic of midterm 2

Score\Problem

1

2

3

4

5

9-10

11

23

19

25

1

7-8

21

12

11

6

1

0-6

14

11

16

15

44