Ефремова, Светлана Сергеевна. Приведение кривых 2-го порядка к каноническому виду поворотом осей координат [Электронный ресурс]: учебное пособие / С. С. Ефремова, Л. А. Иванова; Санкт-Петербургский политехнический университет Петра Великого. — Электрон. текстовые дан. (1 файл : 1,36 Мб). — Санкт-Петербург, 2018. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать). — Adobe Acrobat Reader 7.0. — <URL:http://elib.spbstu.ru/dl/2/s18-45.pdf>. — <URL:http://doi.org/10.18720/SPBPU/2/s18-45>.
|
Period
|
Read
|
Print
|
Copy
|
Open
|
Total
|
|
Year 2018
|
Quarter 1
|
March
|
16
|
0
|
0
|
0
|
16
|
|
Quarter 2
|
April
|
18
|
0
|
0
|
0
|
18
|
|
May
|
6
|
0
|
0
|
0
|
6
|
|
June
|
9
|
0
|
0
|
0
|
9
|
|
Quarter 3
|
July
|
3
|
0
|
0
|
0
|
3
|
|
August
|
6
|
0
|
0
|
0
|
6
|
|
September
|
6
|
0
|
0
|
0
|
6
|
|
Quarter 4
|
October
|
449
|
13
|
0
|
0
|
462
|
|
November
|
88
|
2
|
0
|
0
|
90
|
|
December
|
62
|
1
|
0
|
0
|
63
|
|
Year 2019
|
Quarter 1
|
January
|
62
|
0
|
0
|
0
|
62
|
|
February
|
21
|
0
|
0
|
0
|
21
|
|
March
|
18
|
0
|
0
|
0
|
18
|
|
Quarter 2
|
April
|
24
|
0
|
0
|
0
|
24
|
|
May
|
14
|
0
|
0
|
0
|
14
|
|
June
|
12
|
0
|
0
|
0
|
12
|
|
Quarter 3
|
July
|
5
|
0
|
0
|
0
|
5
|
|
August
|
8
|
0
|
0
|
0
|
8
|
|
September
|
4
|
0
|
0
|
0
|
4
|
|
Quarter 4
|
October
|
11
|
0
|
0
|
0
|
11
|
|
November
|
4
|
0
|
0
|
0
|
4
|
|
December
|
11
|
0
|
0
|
0
|
11
|
|
Year 2020
|
Quarter 1
|
January
|
10
|
0
|
0
|
0
|
10
|
|
February
|
7
|
0
|
0
|
0
|
7
|
|
March
|
13
|
0
|
0
|
0
|
13
|
|
Quarter 2
|
April
|
9
|
0
|
0
|
0
|
9
|
|
May
|
5
|
0
|
0
|
0
|
5
|
|
June
|
5
|
0
|
0
|
0
|
5
|
|
Quarter 3
|
July
|
5
|
0
|
0
|
0
|
5
|
|
August
|
2
|
0
|
0
|
0
|
2
|
|
September
|
4
|
0
|
0
|
0
|
4
|
|
Quarter 4
|
October
|
3
|
0
|
0
|
0
|
3
|
|
November
|
5
|
0
|
0
|
0
|
5
|
|
December
|
13
|
0
|
0
|
0
|
13
|
|
Year 2021
|
Quarter 1
|
January
|
14
|
0
|
0
|
0
|
14
|
|
February
|
2
|
0
|
0
|
0
|
2
|
|
March
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 2
|
April
|
6
|
0
|
0
|
0
|
6
|
|
May
|
5
|
0
|
0
|
0
|
5
|
|
June
|
10
|
0
|
0
|
0
|
10
|
|
Quarter 3
|
July
|
8
|
0
|
0
|
0
|
8
|
|
August
|
3
|
0
|
0
|
0
|
3
|
|
September
|
1
|
0
|
0
|
0
|
1
|
|
Quarter 4
|
October
|
2
|
0
|
0
|
0
|
2
|
|
November
|
5
|
1
|
0
|
0
|
6
|
|
December
|
3
|
0
|
0
|
0
|
3
|
|
Year 2022
|
Quarter 1
|
January
|
0
|
0
|
0
|
0
|
0
|
|
February
|
2
|
0
|
0
|
0
|
2
|
|
March
|
1
|
0
|
0
|
0
|
1
|
|
Quarter 2
|
April
|
2
|
0
|
0
|
0
|
2
|
|
May
|
3
|
0
|
0
|
0
|
3
|
|
June
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 3
|
July
|
4
|
0
|
0
|
0
|
4
|
|
August
|
5
|
1
|
0
|
0
|
6
|
|
September
|
4
|
0
|
0
|
0
|
4
|
|
Quarter 4
|
October
|
1
|
0
|
0
|
0
|
1
|
|
November
|
3
|
0
|
0
|
0
|
3
|
|
December
|
5
|
0
|
0
|
0
|
5
|
|
Year 2023
|
Quarter 1
|
January
|
6
|
0
|
0
|
0
|
6
|
|
February
|
2
|
0
|
0
|
0
|
2
|
|
March
|
4
|
0
|
0
|
0
|
4
|
|
Quarter 2
|
April
|
6
|
0
|
0
|
0
|
6
|
|
May
|
4
|
0
|
0
|
0
|
4
|
|
June
|
4
|
0
|
0
|
0
|
4
|
|
Quarter 3
|
July
|
3
|
0
|
0
|
0
|
3
|
|
August
|
2
|
0
|
0
|
0
|
2
|
|
September
|
5
|
0
|
0
|
0
|
5
|
|
Quarter 4
|
October
|
3
|
0
|
0
|
0
|
3
|
|
November
|
8
|
1
|
0
|
0
|
9
|
|
December
|
5
|
0
|
0
|
0
|
5
|
|
Year 2024
|
Quarter 1
|
January
|
4
|
0
|
0
|
0
|
4
|
|
February
|
0
|
0
|
0
|
0
|
0
|
|
March
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 2
|
April
|
3
|
0
|
0
|
0
|
3
|
|
Total
|
1,095
|
19
|
0
|
0
|
1,114
|
