1
00:00:00,780 --> 00:00:03,946
Đồ thị x nhỏ hơn 4.

2
00:00:03,946 --> 00:00:06,920
Vì vậy, ta hãy tự vẽ một dãy số ở đây.

3
00:00:06,920 --> 00:00:10,450
Hãy để tôi vẽ một dãy số.

4
00:00:13,030 --> 00:00:20,120
Tôi bắt đầu từ 0, vì vậy 0, 1, 2, 3, 4, 5.

5
00:00:20,120 --> 00:00:22,450
Và chúng ta có thể đi xuống dưới 0.

6
00:00:22,450 --> 00:00:26,360
Ta có âm 1, âm 2, âm 3, âm 4.

7
00:00:26,360 --> 00:00:27,590


8
00:00:27,590 --> 00:00:31,950


9
00:00:31,950 --> 00:00:33,370


10
00:00:33,370 --> 00:00:35,250


11
00:00:35,250 --> 00:00:36,950


12
00:00:36,950 --> 00:00:39,750


13
00:00:39,750 --> 00:00:42,890


14
00:00:42,890 --> 00:00:45,400


15
00:00:45,400 --> 00:00:49,125


16
00:00:49,125 --> 00:00:52,960


17
00:00:52,960 --> 00:00:55,060


18
00:00:55,060 --> 00:00:59,045


19
00:01:02,380 --> 00:01:06,050


20
00:01:06,050 --> 00:01:09,657


21
00:01:09,657 --> 00:01:10,740


22
00:01:10,740 --> 00:01:13,080


23
00:01:13,080 --> 00:01:15,510


24
00:01:15,510 --> 00:01:20,830


25
00:01:20,830 --> 00:01:22,670


26
00:01:22,670 --> 00:01:24,526


27
00:01:24,526 --> 00:01:27,720


28
00:01:27,720 --> 00:01:28,720


29
00:01:28,720 --> 00:01:33,200