marginal function of x

4:35

1:29

4:41

7:24

3:57

2:08

3:57

22:50

1:06

1:34

2:57

20:10

22:23

1:24

21:38

3:54

1:40

18:57

4:22

7:52

کوتاه

20:53

1:06

14:58

22:57

5:27

3:31

2:58

کوتاه

3:54

6:13

23:03

1:01

5:23

3:39

6:33

1:03

3:56

1:54

1:54