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1
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ุจุณู… ุงู„ู„ู‡ ุงู„ุฑุญู…ู† ุงู„ุฑุญูŠู… ุงู„ูŠูˆู… ุฅู† ุดุงุก ุงู„ู„ู‡ ู†ูƒู…ู„ ููŠ
2
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ุดูŠุชุฉ 8 techniques of integration ุทุฑู‚ ุงู„ุชูƒุงู…ู„
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ุณุจุดู† 8.2 ุงู„ู„ูŠ ู†ุญูƒูŠ ุงู„ูŠูˆู… ุนู† ุงู„
4
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trigonometric integrals ูŠุนู†ูŠ ุงู„ุชูƒุงู…ู„ุงุช ุงู„ู„ูŠ ููŠู‡ุง
5
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ุงู„ู€ trigonometric functions ุงู„ู„ูŠ ู‡ูŠ ุงู„ุงู‚ุชุฑุงู†ุงุช
6
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ุงู„ู…ุซู„ุซูŠุฉ ุงู„ู€ trigonometric integrals ุฑุงุญ ูŠูƒูˆู† ููŠ
7
00:00:20,840 --> 00:00:25,100
ุนู†ุฏู†ุง ุฑุงุญ ู†ุงุฎุฏ ุงู„ุฃู†ูˆุงุน ุชุจุนุชู‡ุง ูƒู„ู‡ุง ุฅุฐุง ูƒุงู†ุช ุชูƒุงู…ู„
8
00:00:25,100 --> 00:00:30,180
Sine ุฃูุณ M ููŠ Cosine ุฃูุณ N ูŠุนู†ูŠ ููŠ ุทุจุนุงู‹ Sine ุฃูุณ M ููŠ Cosine ุฃูุณ N ูŠุนู†ูŠ
9
00:00:30,180 --> 00:00:33,380
ููŠ ุนู†ุฏู†ุง ุฃุณุณ ู„ู„ู€ Sine ูˆุงู„ู€ Cosine ูƒูŠู ู†ุชุนุงู…ู„ ู…ุน
10
00:00:33,380 --> 00:00:38,100
ู‡ุฐุง ุงู„ุชูƒุงู…ู„ุŸ ุทุจุนุงู‹ ุฑุงุญ ู†ุงุฎุฏ ุงู„ุญุงู„ุงุช ุชุจุนุชู‡ุง ุฅุฐุง ูƒุงู†ุช
11
00:00:38,100 --> 00:00:41,060
ุงู„ู€ M ุจุงู„ุฃูˆู„ ุฅูŠุด ู‡ูŠ ุงู„ุญุงู„ุฉ ุงู„ุฃูˆู„ู‰ุŸ ุฅุฐุง ูƒุงู†ุช ุงู„ู€ M
12
00:00:41,060 --> 00:00:44,100
ุชุจุนุชูŠ odd ูŠุนู†ูŠ ุงู„ู€ Sine ู…ุฑููˆุนุฉ ุฃูุณ odd Sine ุชูƒุนูŠุจ
13
00:00:44,100 --> 00:00:47,860
Sine ุฃูุณ 5 Sine ุฃูุณ 7 ุฅู„ู‰ ุขุฎุฑู‡ุง M odd ูŠุนู†ูŠ
14
00:00:47,860 --> 00:00:51,820
ุจุชู†ูƒุชุจ ุจุดูƒู„ 2K ุฒุงุฆุฏ 1 ูุจู†ุฑูˆุญ ูˆุจู†ุณุชุฎุฏู… ููŠ
15
00:00:51,820 --> 00:00:54,500
ู‡ุฐู‡ ุงู„ุญุงู„ุฉ ูƒู…ุงู† ุงู„ู€ identity ุงู„ู„ูŠ ู‡ูŠ Sine ุชุฑุจูŠุน ุชุณุงูˆูŠ
16
00:00:54,500 --> 00:00:57,850
1 ู†ุงู‚ุต Cosine ุชุฑุจูŠุน ูƒูŠูุŸ ุงู„ู€ Sine ุฃูุณ M
17
00:00:57,850 --> 00:01:02,510
ุจู†ุญุทู‡ุง ู„ูŠ Sine ุฃูุณ 2K ุฒุงุฆุฏ 1 ุจู†ุงุฎุฏ ู…ู†ู‡ุง Sine ุฃูุณ 1
18
00:01:02,510 --> 00:01:05,770
Sine ู„ุญุงู„ู‡ุง ูˆุงู„ุซุงู†ูŠุฉ Sine ุฃูุณ 2K ุงู„ู„ูŠ ู‡ูŠ Sine
19
00:01:05,770 --> 00:01:09,570
ุชุฑุจูŠุน ุฃูุณ K ุงู„ู€ Sine ุชุฑุจูŠุน ู‡ุฐู‡ ุจู†ุฑูˆุญ ุจู†ุจุฏู„ู‡ุง
20
00:01:09,570 --> 00:01:13,090
ุจุงุณุชุฎุฏุงู… ุงู„ู€ identity ุงู„ู„ูŠ ู‚ู„ู†ุงู‡ ู‡ู†ุง 1 ู†ุงู‚ุต Cos
21
00:01:13,090 --> 00:01:17,490
ุชุฑุจูŠุน ุฃูุณ K ููŠ Sine ูุจู†ูุชูƒ ุงู„ุฃูุณ K ู‡ุฐู‡ ุจู†ูุชูƒ ุงู„ุฃูุณ
22
00:01:17,490 --> 00:01:21,550
ู‡ุฐุง ุฃูุณ ู…ุซู„ุงู‹ ุฃูุณ ุชูƒุนูŠุจ ุชุฑุจูŠุน ุงู„ุฃุฎุฑูŠ ุจู†ูุชูƒู‡
23
00:01:21,550 --> 00:01:27,130
ูˆุจู†ุณุชุฎุฏู… ุงู„ู„ูŠ ู‡ูŠ U ุชุณุงูˆูŠ Cos DU ุชุณุงูˆูŠ ู†ุงู‚ุต ุงู„ู€Sin
24
00:01:27,130 --> 00:01:33,730
ูุจู†ุณุชุฎุฏู…ู‡ุง ุจู‡ุฐุง ุงู„ุดูƒู„ Sin X DX ู†ุงู‚ุต ุงู„ู€D ู„ู„ู€Cos
25
00:01:33,730 --> 00:01:40,030
ูุจุชูƒูˆู† ุชูƒุงู…ู„ ุงู„ู€U DU ูˆู†ูƒู…ู„ ุงู„ุญู„ู‚ุฉ ุงู„ุขู† ุงู„ุญู„ู‚ุฉ
26
00:01:40,030 --> 00:01:43,270
ุงู„ุซุงู†ูŠุฉ ู„ูˆ ู„ู‚ูŠู†ุง ุงู„ู€ M ุชุจุนุชูŠ ู…ุด odd ู„ูˆ ูƒุงู†ุช ุงู„ู€ M
27
00:01:43,270 --> 00:01:47,250
is even ุจู†ุฑูˆุญ ุจู†ู†ุชู‚ู„ ู„ู„ุฃุณ ุงู„ู€ Cosine ุจู†ุดูˆู ุฅุฐุง
28
00:01:47,250 --> 00:01:50,850
ูƒุงู†ุช ุงู„ู€ N is odd ูŠุนู†ูŠ ุงู„ู€ Cosine ู…ุฑููˆุนุฉ ุฃูุณ odd ูŠุจู‚ู‰
29
00:01:50,850 --> 00:01:54,790
ุงู„ู€ Sine ุฃูุณ even ุฎู„ู‘ูู†ุง ู…ู†ู‡ุง ู‡ุฐู‡ ุงู„ู€ N ุจู†ุฑูˆุญ ู†ู†ุชู‚ู„
30
00:01:54,790 --> 00:01:57,810
ู„ู…ูŠู†ุŸ ู„ู„ู€ N ุงู„ู„ูŠ ู‡ูŠ ุงู„ุฃุณ ุชุจุน ุงู„ู€ Cosine ุจู†ุดูˆูู‡ ุฅุฐุง ูƒุงู†
31
00:01:57,810 --> 00:02:03,060
ู‡ูˆ odd ูŠุนู†ูŠ ุงู„ู€ Sin ุฃูุณ M Cosine ุฃูุณ N ู‡ุฐู‡ even ุจู†ุดูˆู
32
00:02:03,060 --> 00:02:05,480
ู‡ุฐู‡ ุฅุฐุง ูƒุงู†ุช odd ูŠุจู‚ู‰ ุฃูˆู„ ุดูŠุก ุจู†ุทู„ุน ุนู„ู‰ ู‡ุฐู‡ ุฅุฐุง
33
00:02:05,480 --> 00:02:08,460
ูƒุงู†ุช odd ู†ุชุนุงู…ู„ ู…ุนู‡ุง ุฅุฐุง ูƒุงู†ุช even ุจู†ุฑูˆุญ ู†ู†ุชู‚ู„
34
00:02:08,460 --> 00:02:12,920
ู„ู„ุฃุณ ุงู„ู€ Cosine ุฅุฐุง ูƒุงู† odd ูŠุนู†ูŠ ุงู„ู€ N ุชุณุงูˆูŠ 2K ุฒุงุฆุฏ
35
00:02:12,920 --> 00:02:17,540
1 ุจู†ุญุทู‡ุง ูˆุจู†ุณุชุฎุฏู… ุงู„ู€ identity ู†ูุณู‡ุง ุจุณ ู‡ู†ุง
36
00:02:17,540 --> 00:02:21,080
Cosine ุชุฑุจูŠุน ุชุณุงูˆูŠ 1 ู†ุงู‚ุต Sin ุชุฑุจูŠุน ูŠุจู‚ู‰ Cosine ุฃูุณ
37
00:02:21,080 --> 00:02:24,680
N ุจุฏู†ุง ู†ุญุทู‡ุง Cosine ุฃูุณ 2K ุฒุงุฆุฏ 1 Cosine ูˆุงุญุฏุฉ ุจุฏู†ุง
38
00:02:24,680 --> 00:02:29,640
ู†ุงุฎุฏู‡ุง ู„ุญุงู„ู‡ุง ุจุชุถู„ ู‡ู†ุง Cosine ุฃูุณ 2K ุจุฏุงู„ ุงู„ู€ Cosine ุชุฑุจูŠุน
39
00:02:29,640 --> 00:02:33,540
ู†ุถุน 1 ู†ุงู‚ุต Sin ุชุฑุจูŠุน ุฃูุณ K ููŠ ู‡ุฐู‡ ุงู„ุญุงู„ุฉ ู†ููƒ
40
00:02:33,540 --> 00:02:36,320
ุงู„ุฃุณ K ูˆููŠ ู‡ุฐู‡ ุงู„ุญุงู„ุฉ ู†ุงุฎุฏ ุงู„ู€Sin ู‡ูŠ U ุชุทู„ุน
41
00:02:36,320 --> 00:02:41,040
ุงู„ู€ Cosine ู‡ูŠ DU ุจุงู„ุถุจุท ุจุฏูˆู† ุฅุดุงุฑุฉ ุณุงู„ุจุฉ ุทูŠุจ ุฅุฐุง ูƒุงู†ุช
42
00:02:41,040 --> 00:02:44,840
ู„ุง ุงู„ู€ M ูˆู„ุง ุงู„ู€ N ูˆู„ุง ูˆุงุญุฏุฉ ู…ู†ู‡ู… odd ุงู„ุชู†ุชูŠู† even
43
00:02:44,840 --> 00:02:48,700
ุฅุฐุง ูƒุงู†ุช ุงู„ู€ M ูˆุงู„ู€ N are both even ูููŠ ู‡ุฐู‡ ุงู„ุญุงู„ุฉ
44
00:02:48,700 --> 00:02:51,880
ุจู†ุณุชุฎุฏู…... ุจู†ุญูˆู„ ุงู„ู€ Sine ุชุฑุจูŠุน... ุงู„ู€ Sine ุชุฑุจูŠุน
45
00:02:51,880 --> 00:02:54,340
ุจู†ุญูˆู„ู‡ุง ู„ู‚ุงู†ูˆู† ุถุนู ุงู„ุฒุงูˆูŠุฉ ูˆุงู„ู€ Cosine ุชุฑุจูŠุน ุจุฑุถู‡
46
00:02:54,340 --> 00:02:58,960
ุจู†ุญูˆู„ู‡ุง ู„ู‚ุงู†ูˆู† ุถุนู ุงู„ุฒุงูˆูŠุฉ ุจู‡ุฐุง ุงู„ุดูƒู„ ูˆุจู†ุถุฑุจู‡ู… ููŠ
47
00:02:58,960 --> 00:03:02,820
ุจุนุถ ูˆุจู†ุดูˆู ุฅูŠุด ุจูŠุทู„ุน ู…ุนุงู†ุง ุดุบู„ุงู†ุฉ ุจู†ุดูˆู ุงู„ุฃู…ุซู„ุฉ
48
00:03:02,820 --> 00:03:08,580
ุนู„ู‰ ู‡ุฐุง ุงู„ู†ูˆุน ู…ู† ุงู„ุชูƒุงู…ู„ ุฃูˆู„ ุดูŠุก evaluate ุงู„ุชูƒุงู…ู„ ู„ู€
49
00:03:08,580 --> 00:03:12,940
Sin ุชูƒุนูŠุจ Cos ุชุฑุจูŠุน ุงู„ุขู† ุจุชู„ุงุญุธ ู†ุชุทู„ุน ุจุงู„ุฃูˆู„ ุญุชู‰
50
00:03:12,940 --> 00:03:15,780
ู„ูˆ ูƒุงู†ุช ู‡ุฐู‡ ุงู„ุชู†ุชูŠู† odd ุงุญู†ุง ุจู†ุงุฎุฏ ู‡ุฐู‡ odd
51
00:03:15,780 --> 00:03:18,840
ูˆุงู„ุซุงู†ูŠุฉ ู…ุง ู†ู„ุฌุฃ ููŠู‡ุง even ุฃูˆ odd ุงู„ุขู† ู…ุฏุงู… ุงู„
52
00:03:18,840 --> 00:03:21,780
Sin ู…ุฑููˆุนุฉ odd odd ุจู†ุชุนุงู…ู„ ู…ุนู‡ุง ู‡ูŠ ุงู„ู„ูŠ ุจุงู„ุฃูˆู„
53
00:03:21,780 --> 00:03:25,800
ูู…ุฏุงู… ุงู„ู€ Sin odd odd ูŠุจู‚ู‰ ุจู†ุงุฎุฏ Sin ูˆุงุญุฏุฉ ู†ุงุฎุฏ
54
00:03:25,800 --> 00:03:28,820
Sin ูˆุงุญุฏุฉ ุจูŠุธู„ ุนู†ุฏู†ุง ู‡ู†ุง Sin ุชุฑุจูŠุน ุงู„ู€ Sin ุชุฑุจูŠุน
55
00:03:28,820 --> 00:03:32,200
ุจู†ุฑูˆุญ ุจู†ุญูˆู„ู‡ุง ู„ู„ู‚ุงู†ูˆู† ุงู„ู„ูŠ ู‡ูˆ 1 ู†ุงู‚ุต Cosine
56
00:03:32,200 --> 00:03:36,150
ุชุฑุจูŠุน ูˆููŠ Cos ุชุฑุจูŠุน ูˆู‡ุฐุง ุงู„ู€ Sine ุจู†ุฎู„ู‘ูŠู‡ุง ู‡ูŠูƒ ุจูŠู†
57
00:03:36,150 --> 00:03:40,390
ุฃูุณู‘ูŠู† ู…ุนูŠู† DX ุนุดุงู† ู‡ูŠ ุจุชูƒูˆู† DU ุงู„ุขู† ู‡ู†ุง ุฏู‡ ููŠ Cos
58
00:03:40,390 --> 00:03:43,210
ุชุฑุจูŠุน ุจู†ุฑูˆุญ ุจู†ูุชูƒ ุงู„ุฃุณ ุจู†ุฏุฎู„ ุงู„ู€ Cos ุชุฑุจูŠุน ุนู„ู‰
59
00:03:43,210 --> 00:03:48,010
ุงู„ุฃุณ ุจูŠุตูŠุฑ Cos ุชุฑุจูŠุน ู†ุงู‚ุต Cos ุฃุฑุจุนุฉ ููŠ Sin X DX
60
00:03:48,010 --> 00:03:52,010
ุงู„ุขู† ู‡ู†ุง ุจูŠุตูŠุฑ ุงู„ู€ Cosine ูƒุฃู†ู‡ุง ู‡ูŠ U ู‡ูŠ DU ู…ูˆุฌูˆุฏุฉ
61
00:03:52,010 --> 00:03:55,170
ุจุณ ุจุงู„ุณุงู„ู… ูŠุจู‚ู‰ ู„ูˆ ุฃุฎุฐู†ุง U ุชุณุงูˆูŠ Cosine ุชุจู‚ู‰ DU
62
00:03:55,170 --> 00:03:58,630
ุชุณุงูˆูŠ ู†ุงู‚ุต Sin ูŠุนู†ูŠ ุจุฏู†ุงุด ุงุญู†ุง ู†ุญูˆู‘ู„ ู„ู€ U ุจุฏู†ุง
63
00:03:58,630 --> 00:04:01,930
ู†ุถู„ู†ุง ู†ุณุชุฎุฏู…ู‡ุง ุจุฏุฃ ุงู„ุดูƒู„ ู„ูˆ ุญุทูŠู†ุง ู‡ู†ุง ู†ุงู‚ุต ุชุจู‚ู‰
64
00:04:01,930 --> 00:04:05,010
ู‡ุฐู‡ ูƒู„ู‡ุง ู‡ูŠ DU ุญุทูŠู†ุง ู‡ู†ุง ู†ุงู‚ุต ู…ู† ุงู„ูุชุฑุฉ ุจุฑุง ู‡ู†ุง
65
00:04:05,010 --> 00:04:09,570
ุจุฑุถู‡ ู†ุงู‚ุต ูุนู„ู‰ ุทูˆู„ ุจู†ุณุชุฎุฏู… ุงู†ู‡ ูƒู„ ูˆุงุญุฏุฉ ู…ู† ู‡ุฏูˆู„ุฉ U
66
00:04:09,570 --> 00:04:14,510
ูˆู‡ุฐุง ุจูŠูƒูˆู† ู‡ูŠ DU ูŠุนู†ูŠ ู…ู…ูƒู† ู…ุจุงุดุฑุฉ ู‡ูŠ ูƒุงู†ุช ุฃุณู‡ู„ ู…ู†
67
00:04:14,510 --> 00:04:18,910
ุงู†ู‡ ู†ุญูˆู‘ู„ ู„ู€ U ู„ุฃู†ู‡ุง ุณู‡ู„ุฉ ูู‡ู†ุง ููŠ ู‡ุงูŠ ุงู„ุณุงู„ุจ Cosine
68
00:04:18,910 --> 00:04:22,550
ุชุฑุจูŠุน ุชูƒุงู…ู„ู‡ุง Cosine ุชูƒุนูŠุจ ุนู„ู‰ 3 Cosine ุฃูุณ 4 ุชูƒุงู…ู„ู‡ุง
69
00:04:22,550 --> 00:04:28,390
Cosine ุฃูุณ 5 ุนู„ู‰ 5 ูˆููŠ ุงู„ุขุฎุฑ ุจู†ุญุท ุฒุงุฆุฏ C ุงู„ุขู† ู…ุซุงู„
70
00:04:28,390 --> 00:04:33,470
ุงู„ุซุงู†ูŠ Cosine ุฃูุณ 5 ุงู„ุขู† ู„ู… ุชูˆุฌุฏ Sin ููŠู‡ Cosine
71
00:04:33,470 --> 00:04:36,070
ูˆ Cosine ุฃูุณ odd ูŠุจู‚ู‰ ู‡ุฐู‡ ุงู„ู€ Cosine ุฃูุณ odd ู†ุชุนุงู…ู„
72
00:04:36,070 --> 00:04:39,130
ู…ุนู‡ุง ู„ูˆ ูƒุงู†ุช ููŠู‡ Sin ุฃูุณ even ุจุฑุถู‡ ู†ุชุนุงู…ู„ ุจู†ูุณ
73
00:04:39,130 --> 00:04:42,910
ุงู„ุดูƒู„ ู…ุง ููŠุด Sin ุจุงู„ู…ุฑุฉ ุจุณ ู…ูˆุฌูˆุฏ Cosine ูˆู†ูุณ
74
00:04:42,910 --> 00:04:45,450
ุงู„ุดูŠุก ุงู„ู„ูŠ ููˆู‚ ู„ูˆ ูƒุงู†ุช Sin ุฃูุณ odd ู…ูˆุฌูˆุฏุฉ ุจุฑุถู‡
75
00:04:45,450 --> 00:04:49,030
ู†ุชุนุงู…ู„ ุจู†ูุณ ุงู„ุทุฑูŠู‚ุฉ ุงู„ู„ูŠ ุญูƒูŠู†ุงู‡ุง ุงู„ุขู† ุงู„ู€ Cosine ู‡ูŠ
76
00:04:49,030 --> 00:04:51,470
ุงู„ู„ูŠ ุฃูุณ odd ูู†ุฑูˆุญ ุนุดุงู† ู†ุนู…ู„ ููŠ ุงู„ู€ Cosine ู†ุงุฎุฏ ู…ู†ู‡ุง
77
00:04:51,470 --> 00:04:56,650
Cosine ูˆุงุญุฏุฉ ูˆุจู†ุฎู„ูŠ ู‡ุฐู‡ Cosine ุฃูุณ 4 Cos 4 ู‡ูŠ
78
00:04:56,650 --> 00:05:00,770
Cos ุชุฑุจูŠุน ูƒู„ ุชุฑุจูŠุน Cos ุชุฑุจูŠุน ุจู†ุญูˆู„ู‡ุง ู„ู€ 1-Sin ุชุฑุจูŠุน
79
00:05:00,770 --> 00:05:03,870
ู‡ูŠ ูƒู„ ุชุฑุจูŠุน ูˆู‡ุงุฏ ุงู„ู€ Cos ุจุชุธู„ู‡ุง ุฒูŠ ู…ุง ู‡ูŠ ู‡ูŠูƒ ูˆ
80
00:05:03,870 --> 00:05:08,570
ู†ูุทู‡ุง ู…ุน ุงู„ู€ DX ุนุดุงู† ู‡ูŠ ุชูƒูˆู† DU ุทุจุนุงู‹ ู‚ุจู„ ู„ุงุฒู… ู†ููƒ
81
00:05:08,570 --> 00:05:13,810
ุงู„ุชุฑุจูŠุน ุงู„ู„ูŠ ู‡ู†ุง ูุจู†ููƒ 1-Sin ุชุฑุจูŠุน ูƒู„ ุชุฑุจูŠุน 1-2Sin
82
00:05:13,810 --> 00:05:18,330
ุชุฑุจูŠุน ุฒูŠ Sin ุฃูุณ 4 ููŠ Cos X DX ู„ุฃู† ู„ูˆ ูƒุงู†ุช ู‡ุฐู‡ Sin
83
00:05:18,330 --> 00:05:22,390
ู‡ูŠ U ูู€ DU ู‡ูŠ Cosine ุทุจุนุงู‹ ู‡ุงุฏ ุจุณ ูŠุนู†ูŠ ุจุชูุทูŠ ุจุนู‚ู„ูƒ
84
00:05:22,390 --> 00:05:26,990
ูŠุนู†ูŠ ู„ูƒู† ู…ุด ุฑุงุญ ู†ูุทู‘ู‡ุง ู‡ู†ุง ุทุจุนุงู‹ ุฃู†ุช ู…ู…ูƒู† ุชุญุทู‘ูŠู‡ ู„ูƒู† ู…ุด
85
00:05:26,990 --> 00:05:31,190
ุถุฑูˆุฑูŠ ู„ุฅู†ู‡ ุณุคุงู„ ุณู‡ู„ ุงู„ุขู† ุจูŠุตูŠุฑ ู„ูˆ ุฃุฎุฐู†ุง ุงู„ู€ Sin U
86
00:05:31,190 --> 00:05:34,590
ูู‡ูŠ ุงู„ู€ Cosine ู‡ูŠ DU ุงู„ุขู† ุฃูˆู„ ุดูŠุก ุจู†ูƒุงู…ู„ ุงู„ูˆุงุญุฏ
87
00:05:34,590 --> 00:05:37,090
ุงู„ูˆุงุญุฏ ุทุจุนุงู‹ ููŠ ุงู„ู€ Cosine ูŠุนู†ูŠ ูƒุฃู†ู‡ ุชูƒุงู…ู„ ุงู„ู€ Cosine
88
00:05:37,090 --> 00:05:40,910
ุชูƒุงู…ู„ ุงู„ู€ Cosine Sin ู†ุงู‚ุต ุงุซู†ูŠู† Sin ุชุฑุจูŠุน ุชูƒุงู…ู„ู‡ุง
89
00:05:40,910 --> 00:05:43,690
Sin ุชูƒุนูŠุจู‡ุง ุซู„ุงุซุฉ ูˆ Sin ุฃูุณ 4 ุชูƒุงู…ู„ู‡ุง Sin ุฃูุณ
90
00:05:43,690 --> 00:05:47,810
5 ุนู„ู‰ 5 ูˆุจู†ุญุท ุฒุงุฆุฏ C ู‡ูŠ ุงู„ุญุงู„ุฉ ุงู„ุซุงู†ูŠุฉ
91
00:05:47,810 --> 00:05:51,690
ุงู„ุญุงู„ุฉ ุงู„ุซุงู„ุซุฉ ู„ูˆ ูƒุงู†ูˆุง ุงู„ุชู†ุชูŠู† even ูู‡ุฏูŠ ุฃูุณ even
92
00:05:51,690 --> 00:05:56,530
ูˆู‡ุฐู‡ ุจุฑุถู‡ ุฃูุณ even ู‚ู„ู†ุง ููŠ ู‡ุฐู‡ ุงู„ุญุงู„ุฉ ุจุฃู† ู†ุญูˆู‘ู„
93
00:05:56,530 --> 00:05:59,450
ูƒู„ ูˆุงุญุฏุฉ ู…ู†ู‡ู… ู„ู‚ุงู†ูˆู† ุถุนู ุงู„ุฒุงูˆูŠุฉ ูู€ Sin ุชุฑุจูŠุน ุจู†ุญุท
94
00:05:59,450 --> 00:06:04,730
ุจุฏุงู„ู‡ุง 1-Cos 2X ุนู„ู‰ 2 Cos ุฃูุณ 4 ู‡ูŠ Cos ุชุฑุจูŠุน ูƒู„
95
00:06:04,730 --> 00:06:08,690
ุชุฑุจูŠุน ู‡ูŠ ูƒู„ ุชุฑุจูŠุน ูˆ Cos ุชุฑุจูŠุน ู„ุฌูˆู‡ ุจุฑุถู‡ ุจู†ุญุทู‡ุง 1 ุฒูŠ
96
00:06:08,690 --> 00:06:12,890
Cos 2X ุนู„ู‰ 2 ุทุจุนุงู‹ ู‡ุฏูˆู„ ุงู„ุงุซู†ูŠู† ุจุฏู†ุง ู†ุถุฑุจู‡ู… ููŠ ุจุนุถ
97
00:06:13,600 --> 00:06:17,120
ุงู„ุขู† ู‡ุฐู‡ ุงุซู†ูŠู† ุชุฑุจูŠุน ูŠุนู†ูŠ ุฃุฑุจุนุฉ ูˆู‡ู†ุง ููŠ ุงุซู†ูŠู†
98
00:06:17,120 --> 00:06:20,060
ุซู…ุงู†ูŠุฉ ู‡ูŠ ู‡ุชู…ูˆุง ู…ู† ุจุฑุง 1 ู†ุงู‚ุต ูƒูˆุฒุงูŠู† ุงุซู†ูŠู† X
99
00:06:20,060 --> 00:06:24,420
1 ุฒุงุฆุฏ ูƒูˆุฒุงูŠู† ุงุซู†ูŠู† X 1 ุนุดุงู† ุจุชุตูŠุฑ ู…ุฑุจุน
100
00:06:24,420 --> 00:06:27,380
ุฒูŠ ู‡ูŠูƒ 1 ู†ุงู‚ุต ูƒูˆุฒุงูŠู† ุชุฑุจูŠุน ูˆุจุธู„ ุฃูุณ ู…ู† ู‡ุฏูˆู„ุฉ
101
00:06:27,380 --> 00:06:31,000
1 ุฒุงุฆุฏ ูƒูˆุฒุงูŠู† ุงุซู†ูŠู† X ุจุชููƒูŠู‡ู… ุจุฃูŠ ูƒูŠููŠุฉ ูƒุงู†ุช
102
00:06:31,000 --> 00:06:34,600
ูˆุจุชุถุฑุจ ู‡ุฏูˆู„ ุงุซู†ูŠู† ุงู„ู€ Cosine ุจุจุนุถ ู‡ู†ุง ุถุฑุจู†ุงู‡ู… ู‡ูŠุด
103
00:06:34,600 --> 00:06:37,380
ู…ุฑูƒูˆูƒู… 1 ุฒุงุฆุฏ ูƒูˆุฒุงูŠู† ู†ุงู‚ุต ูƒูˆุฒุงูŠู† ุชุฑุจูŠุน ู†ุงู‚ุต
104
00:06:37,380 --> 00:06:41,580
ูƒูˆุฒุงูŠู† ุชูƒุนูŠุจ DX ุงู„ุขู† ูƒู„ ูˆุงุญุฏุฉ ุจู†ุชุนุงู…ู„ ู…ู†ู‡ุง ู„ุญุงู„ุฉ
105
00:06:41,580 --> 00:06:47,140
ุงู„ุขู† ุงู„ู€ Cosine ุชุฑุจูŠุน ูˆุงู„ู€ Cosine ุชูƒุนูŠุจ ุจุฏู‡ู… ุดุบู„
106
00:06:47,140 --> 00:06:50,580
ุงู„ู€ Cosine ุชุฑุจูŠุน ุจู†ุญูˆู„ู‡ุง ู„ูˆุงุญุฏ ุฒุงุฆุฏ ูƒูˆุฒุงูŠู† ุถุนู
107
00:06:50,580 --> 00:06:53,500
ุงู„ุฒุงูˆูŠุฉ ุนู„ู‰ ุงุซู†ูŠู† ุทุจุนุงู‹ ู‡ุฐุง ู…ู† Calculus A ุฅู† ูƒูˆุฒุงูŠู†
108
00:06:53,500 --> 00:06:59,480
ุชุฑุจูŠุน ูˆุณุงูŠู† ุชุฑุจูŠุน ุจู†ูƒู…ู„ู‡ู… ุจู‡ุฐุง ุงู„ุดูƒู„ ุงู„ู€ Cos ุชูƒุนูŠุจ
109
00:06:59,480 --> 00:07:03,940
ุงู„ู€ Cos ุชูƒุนูŠุจ ุฅูŠุด ู†ุนู…ู„ ููŠู‡ุงุŸ ู‡ุฐู‡ ุฃูุณ ู‚ูˆุฉ ู…ุฑููˆุนุฉ ุฃูุณ
110
00:07:03,940 --> 00:07:09,200
ู‚ูˆุฉ ุจู†ุงุฎุฏ ู…ู†ู‡ุง Cos ูˆุงุญุฏุฉ ูˆ Cos ุงู„ุชุฑุจูŠุน ุจู†ุญูˆู„ู‡ุง ู„ู€
111
00:07:09,200 --> 00:07:13,660
1-Sinยฒ2X ู„ูŠู‡ ุงู„ุญุงู„ุฉ ุงู„ู„ูŠ ู‚ุจู„ ุงู„ุญุงู„ุฉ ุงู„ุซุงู†ูŠุฉ ูƒูˆูŠุณุฉ
112
00:07:13,660 --> 00:07:19,820
ู‡ูŠ 1-Sinยฒ2X ููŠ Cos 2X DX ุงู„ุขู† ู‡ุฐู‡ ุนุดุงู† ู†ูƒู…ู„ู‡ุง
113
00:07:19,820 --> 00:07:21,320
ู…ุจุงุดุฑุฉ ู‡ุฐู‡
114
00:07:29,020 --> 00:07:33,680
ู‡ุฐุง ุงู„ูˆุถุน ูŠุฌุจ ุฃู† ูŠูƒูˆู† DU
115
00:07:39,260 --> 00:07:42,760
ู‡ุฐู‡ 2X ูู‡ูŠ ู…ุถุฑูˆุจุฉ X ููŠ 2 ูู‡ู†ุง ุฑูˆุญู†ุง ุงู„ู€
116
00:07:42,760 --> 00:07:45,200
Cosine ู‡ูŠ ู†ุถุฑุจู‡ุง ููŠ 2 ุฒูŠ ุงู„ุณุงู„ุจ ุงู„ู„ูŠ ุญุทูŠู†ุงู‡ุง
117
00:07:45,200 --> 00:07:48,420
ู‚ุจู„ู‡ุง ููŠ 2 ูˆู‡ูŠ ู‚ุณู…ู†ุงู‡ุง ุนู„ู‰ 2 ู‡ูŠ ุงู„ุงุซู†ูŠู†
118
00:07:48,420 --> 00:07:50,760
ุงู„ุซุงู†ูŠุฉ ูŠุจู‚ู‰ ู‚ุณู…ู†ุงู‡ุง ุนู„ู‰ 2 ูˆุถุฑุจู†ุงู‡ุง ู‡ู†ุง ููŠ
119
00:07:50,760 --> 00:07:55,570
2 ุนุดุงู† ุฃูƒู…ู„ ู‡ุฐุง ุงู„ู€ Eta ู…ุจุงุดุฑุฉ ุงู„ุขู† ู‡ูŠ ุงู„ุชูƒุงู…ู„
120
00:07:55,570 --> 00:07:58,610
ู‡ุฐุง ูˆู‡ู†ุง ุฌุฐู‚ู†ุง ุงู„ุชูƒุงู…ู„ ู„ุฃู†ู‡ ู‡ุฐุง ุงุดุชุบู„ู†ุง ููŠู‡ ุดูˆูŠุฉ
121
00:07:58,610 --> 00:08:02,790
ุงู„ุขู† ุฃูˆู„ ุดูŠุก ููŠู‡ ุนู†ุฏูƒ 1 ูˆู‡ู†ุง ู†ุงู‚ุต ู†ุตู ู†ุงู‚ุต ู†ุตู
122
00:08:02,790 --> 00:08:06,530
ูŠุนู†ูŠ ุชุทู„ุน ู†ุตู ู‡ูŠ ุงู„ู†ุต ูƒูˆูŠุณุŸ ุฅุฐุง ุจุฏู†ุง ู†ูƒุงู…ู„ ุงู„ู†ุต ู†ุตู
123
00:08:06,530 --> 00:08:10,890
ุชูƒุงู…ู„ู‡ุง ู†ุตู X ู†ุงู‚ุต ุชูƒุงู…ู„ ุงู„ู€ Cos 2X ุงู„ู„ูŠ ู‡ูŠ Sin
124
00:08:10,890 --> 00:08:15,450
2X ุนู„ู‰ 2 ู†ุงู‚ุต ุจุฑุถู‡ ู†ุงู‚ุต ุงู„ู„ูŠ ู‡ูŠ ุงู„ู€ Cosine ู‡ู†ุง
125
00:08:15,450 --> 00:08:20,150
Cosine 4X ุชูƒุงู…ู„ู‡ุง ุงู„ู„ูŠ ู‡ูŠ Sin 4X ุนู„ู‰ 4 ูˆููŠู‡ ู‡ู†ุง
126
00:08:20,150 --> 00:08:24,720
2 ุจุชุตูŠุฑ ุฃุดุฑ ู‡ู†ุง 8 ู†ุงู‚ุต ุงู„ุขู† ู‡ู†ุง ุฏูŠ 1 ุนู„ู‰ 16 ู‡ูŠ 1
127
00:08:24,720 --> 00:08:29,640
ุนู„ู‰ 16 ุงู„ูˆุงุญุฏ ุงู„ูˆุงุญุฏ ุงู„ู„ูŠ ู…ุถุฑูˆุจุฉ ููŠ 2 Cos 2X ุชูƒุงู…ู„
128
00:08:29,640 --> 00:08:33,680
ุงู„ู€ Cos 2X ุงู„ู„ูŠ ู‡ูŠ Sin 2X ุนู„ู‰ 2 ุจุชุฑูˆุญ ุงู„ู€ 2 ู‡ุฐู‡ ูุจุถู„
129
00:08:33,680 --> 00:08:38,000
Sin 2X ู†ุงู‚ุต ุงู„ู„ูŠ ู‡ูŠ Sin ุชุฑุจูŠุน ุชูƒู…ู„ู‡ุง Sin ุชูƒุนูŠุจ ุนู„ู‰
130
00:08:38,000 --> 00:08:42,260
3 ุทุจุนุงู‹ ู‡ุฐู‡ ุฌุงู‡ุฒุฉ ุงุญู†ุง ุนู…ู„ู†ุง ุฏูŠ U ุฌุงู‡ุฒุฉ ู‡ูŠ ู…ู† ู‡ู†ุง
131
00:08:42,260 --> 00:08:46,140
ุฒูŠ ู‡ู†ุง ูู‡ู†ุง Sin ุชูƒุนูŠุจ ุนู„ู‰ 3 ุจุฏูˆู† ุงู„ู†ุธุฑ ู„ู„ู€ 2 ู„ุฅู† ุงู„ู€
132
00:08:46,140 --> 00:08:51,380
2 ุงุญู†ุง ุญุทูŠู†ุงู‡ ู‡ู†ุง ุฒูŠุงุฏุฉ hc ูˆุจุนุฏูŠู† ุจุณ ู‡ู†ุง h ุฌู…ุนุช Sin
133
00:08:51,380 --> 00:08:55,760
2X ู…ุน Sin 2X ุงู„ู„ูŠ ู‡ู†ุง ูˆุจุนุฏูŠู† Sin 4X ู„ุญุงู„ู‡ุง ูˆุงู„ู€
134
00:08:55,760 --> 00:09:02,070
Sin ุชูƒุนูŠุจ ู‡ูŠ ู‡ู†ุง ู„ุญุงู„ู‡ุง ุฒุงุฆุฏ C ู‡ุฐู‡ ุจุงู„ู†ุณุจุฉ ู„ู„ุชู„ูƒ
135
00:09:02,070 --> 00:09:05,950
ุญุงู„ุงุช ุชุจุนุชู‡ุง ุงู„ู„ูŠ ู‡ูˆ ุงู„ู€ Sin ูˆุงู„ู€ Cos ู…ุฑููˆุน ุนู„ู‰ ุฃุณุณ
136
00:09:05,950 --> 00:09:09,230
ููŠ ุนู†ุฏู†ุง ููƒุฑุฉ ุฃุฎุฑู‰ ุงู„ู„ูŠ ู‡ูŠ eliminating square
137
00:09:09,230 --> 00:09:11,750
roots ูŠุนู†ูŠ ู„ู…ุง ูŠูƒูˆู† ููŠ ุนู†ุฏู†ุง ุชูƒุงู…ู„ ููŠ ุนู†ุฏู†ุง ุฌุฐุฑ
138
00:09:11,750 --> 00:09:15,350
ู‡ู†ุง ูˆุงู„ู„ูŠ ุชุญุช ุงู„ุฌุฐุฑ ูุงุถู„ู‡ ู…ุด ู…ูˆุฌูˆุฏ ุจุฑุง ูุจุงู„ุชุงู„ูŠ
139
00:09:15,350 --> 00:09:19,370
ูƒูŠู ู†ุชุนุงู…ู„ ู…ุนุงู‡ุŸ ุจุฏู†ุง ู†ุณุชุฎุฏู… ุงู„ู€ identities ุฅุฐุง ููŠ
140
00:09:19,370 --> 00:09:23,010
ู‡ุฐุง ุงู„ู…ุซุงู„ ุจุฏู†ุง ู†ุณุชุฎุฏู… ุงู„ู€ identity ุงู„ู„ูŠ ู‡ูŠ 1 ุฒูŠ
141
00:09:23,010 --> 00:09:28,150
ุงู„ู€cos 2ฮธ ุชุณุงูˆูŠ 2cosยฒฮธ ุงู„ู„ูŠ ู‡ูˆ ู‚ุงู†ูˆู† ุถุนู ุงู„ุฒุงูˆูŠุฉ
142
00:09:28,310 --> 00:09:31,650
ุงู„ุขู† ุงู„ู…ูˆุฌูˆุฏ ุนู†ุฏูŠ ู‡ู†ุง ุงู„ู„ูŠ ู‡ูˆ ุฒูŠ ู‡ุฐุง ุงู„ู‚ูˆุณ ุงู„ู„ูŠ
143
00:09:31,650 --> 00:09:34,830
ู‡ู†ุง ุงู„ู„ูŠ ู‡ูˆ 1 ุฒุงุฆุฏ ูƒูˆุฒุงูŠู† 2 ููŠุชุง 2 ููŠุชุง
144
00:09:34,830 --> 00:09:38,850
ู‡ู†ุง ู‡ูŠ ุนุจุงุฑุฉ ุนู† 4 X ุงู„ุขู† ุจุฏู†ุง ู†ุณุชุฎุฏู…ู‡ุง ุนุดุงู†
145
00:09:38,850 --> 00:09:41,810
ู†ุทู„ุน ู„ุชุญุช ุงู„ุฌุฐุฑ ุงูŠู‡ ุนุดุงู† ู…ุฑุจุน ูƒุงู…ู„ ู†ุทู„ุน ุชุฑุจูŠุน
146
00:09:41,810 --> 00:09:45,350
ูˆุจุงู„ุชุงู„ูŠ ูŠุทู„ุน ู…ู† ุชุญุช ุงู„ุฌุฐุฑ ุฅุฐุง 1 ุฒุงุฆุฏ ูƒูˆุฒุงูŠู†
147
00:09:45,350 --> 00:09:49,980
4 X ู‡ูŠ ุนุจุงุฑุฉ ุนู† 2 ูƒูˆุฒุงูŠู† ุชุฑุจูŠุน 2 X ูˆู‡ูŠ
148
00:09:49,980 --> 00:09:55,100
ุจุงุณุชุฎุฏุงู… ู‡ุฐุง ุงู„ู‚ุงู†ูˆู† 2cosยฒ2x ุงู„ุขู† ุชุญุช ุงู„ุฌุฐุฑ ุทุจุนุง
149
00:09:55,100 --> 00:09:59,220
ุจู†ููƒ ุงู„ุฌุฐุฑ 2 ู‡ูŠ ุฌุฐุฑ 2 ูˆุงู„ูƒูˆุฒุงูŠู† ุชุฑุจูŠุน ุชุญุช ุงู„ุฌุฐุฑ
150
00:09:59,220 --> 00:10:03,500
ุจู†ููƒู‡ุง ุจุชุทู„ุน ู…ู† ุชุญุช ุงู„ุฌุฐุฑ ูƒูˆุฒุงูŠู† 2x ุทุจุนุง ุจุงู„ู…ูˆุฌุจ
151
00:10:03,500 --> 00:10:07,180
ู„ูŠุดุŸ ู„ุฃู† ููŠ ุนู†ุฏูŠ ุญุฏูˆุฏ ุชูƒุงู…ู„ ู‡ู†ุง ูˆุนุดุงู† ู‡ูŠูƒ ุฅุชุฏุงู†ู‰
152
00:10:07,180 --> 00:10:10,340
ุงู„ุฌุฐุฑ ุฅุชุฏุงู†ู‰ ููŠ ุญุฏูˆุฏ ุชูƒุงู…ู„ ุนุดุงู† ู…ุง ูŠูƒูˆู†ุด ููŠู‡ ู†ุทู„ุน
153
00:10:10,340 --> 00:10:13,540
absolute value ู…ู† 0 ุฅู„ู‰ ฯ€ ุนู„ู‰ 4 ุทุจุนุง ุงู„ cosine
154
00:10:13,540 --> 00:10:16,960
ู…ูˆุฌุจุฉ ูˆุจุงู„ุชุงู„ูŠ ุชุธู‡ุฑ ุฅูŠุงู‡ุง ู…ูˆุฌุจุฉ ู„ุฃู† ู‡ุฐู‡ ู…ู…ูƒู† ุชุชูƒุงู…ู„
155
00:10:16,960 --> 00:10:20,980
ุจุณู‡ูˆู„ุฉ ุชูƒุงู…ู„ ุงู„ cosine ุงู„ู„ูŠ ู‡ูˆ sin 2x ุนู„ู‰ 2 ู…ู† 0
156
00:10:20,980 --> 00:10:24,300
ุฅู„ู‰ ฯ€ ุนู„ู‰ 4 ุฅู„ู‰ ุฃู† end ุงู„ ฯ€ ุนู„ู‰ 4 ููŠ 2 ูŠุนู†ูŠ ุจูŠุตูŠุฑ
157
00:10:24,300 --> 00:10:27,900
ฯ€ ุนู„ู‰ 2 ูˆ sin ุงู„ ฯ€ ุนู„ู‰ 2 ู‡ูˆ 1 ูˆ sin ุงู„ุตูุฑ ุฅูŠุงู‡ุง ุตูุฑ
158
00:10:27,900 --> 00:10:30,360
ูุจุชุธู‡ุฑ ุฃู† ุงู„ุฌูˆุงุจ ุฌุฐุฑ 2 ุนู„ู‰ 2
159
00:10:34,020 --> 00:10:40,900
ุงู„ุชูƒุงู…ู„ุงุช ุชุงู† ู…ุน ุณูƒ ุฑุงุญ
160
00:10:40,900 --> 00:10:44,860
ู†ุณุชุฎุฏู… ุงู„ู€ Identities ุชุงู† ุชุฑุจูŠุน ุชุณุงูˆูŠ ุณูƒ ุชุฑุจูŠุน
161
00:10:44,860 --> 00:10:48,380
ู†ุงู‚ุต 1 ุฃูˆ ุณูƒ ุชุฑุจูŠุน ู‡ูŠ ุงู„ู…ุญูˆู„ุฉ ู„ุชุงู† ุชุฑุจูŠุน ุฒุงุฆุฏ
162
00:10:48,380 --> 00:10:52,020
1 ูˆุจุนุฏูŠู† ู…ู…ูƒู† ูƒู…ุงู† ููŠ ุจุนุถ ุงู„ุฃุณุฆู„ุฉ ู†ุณุชุฎุฏู… ุงู„
163
00:10:52,020 --> 00:10:55,400
integration by parts ุฅุฐุง ูƒุงู† necessary ุฅุฐุง ูƒุงู† ุถุฑูˆุฑูŠ
164
00:10:55,420 --> 00:11:00,020
ุนุดุงู† ุชู‚ูุฒ ุงู„ุฃุณุณ
165
00:11:00,020 --> 00:11:03,840
ุฅู„ู‰ ุฃู‚ู„ ู‚ูˆู‰
166
00:11:10,800 --> 00:11:14,100
ุทุจุนุง ู…ุง ููŠุด ููŠ cases ูˆุงุญุฏ ุงุซู†ูŠู† ุซู„ุงุซุฉ ู„ุฃ ุฃู†ุช ุจุฏูƒ
167
00:11:14,100 --> 00:11:17,400
ุชุดูˆู ุงูŠุด ุงู„ู„ูŠ ู…ูˆุฌูˆุฏ ู„ูŠุดุŸ ู„ุฃู† ู‡ู†ุงูƒ ุชูุงุถู„ ุงู„ sine ูˆ
168
00:11:17,400 --> 00:11:21,560
ุงู„ cosine ุงู„ู„ูŠ ู‡ู… ุชูุงุถู„ุงุชู‡ู… ุฒูŠ ุจุนุถ ู„ูƒู† ู‡ู†ุง ุชูุงุถู„
169
00:11:21,560 --> 00:11:24,980
ุงู„ุชุงู† ุณูƒ ุชุฑุจูŠุน ูุจุงู„ุชุงู„ูŠ ุงูŠุด ุงู„ุชุงู† ุนู„ุงู‚ุชู‡ุง ู…ุน ุณูƒ
170
00:11:24,980 --> 00:11:28,600
ุชุฑุจูŠุน ูˆุชูุงุถู„ ุงู„ุณูƒ ุณูƒ ููŠ ุชุงู† ุฅุฐุง ุจุฑุถู‡ ุนู„ุงู‚ุชู‡ุง ุณูƒ ูˆ
171
00:11:28,600 --> 00:11:32,340
ุชุงู† ูุณูƒ ูˆ ุชุงู† ุงู„ุชุงู† ู…ุฑุชุจุทูŠู† ููŠ ุจุนุถ ููƒู„ ุณุคุงู„ ุงุญู†ุง
172
00:11:32,340 --> 00:11:35,680
ุจุฏู†ุง ู†ุดูˆู ุงูŠุด ุจุฏู†ุง ู†ุณุชุฎุฏู… ู„ู‡ ู„ุฃู† ุชูƒุงู…ู„ ุชุงู† ุฃุณ ุฃุฑุจุนุฉ
173
00:11:35,680 --> 00:11:39,740
ุทุจุนุง ุชุงู† ุฃุณ ุฃุฑุจุนุฉ ู„ุง ูŠู…ูƒู† ุฃูƒู…ู„ู‡ุง ุจู‡ุฐุง ุงู„ุดูƒู„ ุงุญู†ุง ุชุงู†
174
00:11:39,740 --> 00:11:42,440
ุชุฑุจูŠุน ูˆุงุญู†ุง ุญูˆู„ู†ุงู‡ุง ู„ู€ ุณูƒ ุชุฑุจูŠุน ู†ุงู‚ุต 1 ุนุดุงู† ู†ู‚ุฏุฑ
175
00:11:42,440 --> 00:11:45,580
ู†ูƒู…ู„ู‡ุง ุจุฑุถู‡ ู†ูุณ ุงู„ุดูŠุก ู‡ู†ุง ุจุฏู†ุง ู†ู‚ูˆู„ ุชุงู† ุชุฑุจูŠุน ููŠ
176
00:11:45,580 --> 00:11:48,280
ุชุงู† ุชุฑุจูŠุน ูˆุงุญุฏุฉ ู…ู† ุงู„ุชุงู† ุชุฑุจูŠุน ุงู„ู„ูŠ ุญูˆู„ู†ุงู‡ุง ู„ู€ ุณูƒ
177
00:11:48,280 --> 00:11:52,100
ุชุฑุจูŠุน ู†ุงู‚ุต 1 ูุจุชุฏุฎู„ ุชุงู† ุชุฑุจูŠุน ู‡ู†ุง ูุจุชุตูŠุฑ ุชุงู†
178
00:11:52,100 --> 00:11:55,800
ุชุฑุจูŠุน ุณูƒ ุชุฑุจูŠุน ู†ุงู‚ุต ุชุงู† ุชุฑุจูŠุน ุงู„ุขู† ุชุงู† ุชุฑุจูŠุน ุณูŠูƒ
179
00:11:55,800 --> 00:12:00,080
ุชุฑุจูŠุน ู„ูŠุณ ู‡ู†ุง ู…ุดูƒู„ุฉ ู…ุธุจูˆุทุฉ ู„ุฃู† ุชุงู† ุชุฑุจูŠุน ุชุฑุจูŠุน
180
00:12:00,080 --> 00:12:02,600
ุชูุงุถู„ ุชุงู† ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน
181
00:12:02,600 --> 00:12:05,600
ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน
182
00:12:05,600 --> 00:12:08,940
ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน
183
00:12:08,940 --> 00:12:10,600
ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน
184
00:12:10,600 --> 00:12:11,770
ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน ุชุฑุจูŠุน U ุชุฑุจูŠุน
185
00:12:11,770 --> 00:12:14,810
dU ูŠุนู†ูŠ U ุชูƒุนูŠุจ ุนู„ู‰ 3 ูŠุนู†ูŠ ุชุงู† ุชูƒุนูŠุจ ุนู„ู‰ 3
186
00:12:14,810 --> 00:12:18,630
ู†ุงู‚ุต ุงู„ู„ูŠ ู‡ูˆ ุชูƒุงู…ู„ ุชุงู† ุชุฑุจูŠุน ุจู†ุญูˆู„ู‡ุง ู„ู€ ุณูƒ ุชุฑุจูŠุน
187
00:12:18,630 --> 00:12:22,750
ู†ุงู‚ุต 1 ุนุดุงู† ู†ู‚ุฏุฑ ู†ูƒุงู…ู„ู‡ุง ุชูƒุงู…ู„ ุณูƒ ุชุฑุจูŠุน ุงู„ู„ูŠ ู‡ูˆ
188
00:12:22,750 --> 00:12:27,470
ุชุงู† ูˆุชูƒุงู…ู„ ุงู„ูˆุงุญุฏ ุงู„ู„ูŠ ู‡ูˆ X ูˆู†ุญุท ุฒุงุฆุฏ C ูŠุจู‚ู‰ ูƒู„
189
00:12:27,470 --> 00:12:31,940
ุณุคุงู„ ุฃู†ุช ุจุฏูƒ ุชุดูˆู ุงูŠุด ุจุฏูƒ ุชุณุชุฎุฏู… ู„ู‡ ุงู„ุขู† ู…ุซู„ุง ููŠ ู‡ู†ุง
190
00:12:31,940 --> 00:12:36,720
ุชูƒุงู…ู„ ุณูƒ ุชูƒุนูŠุจ ุณูƒ ุฃุณ ูุฑุฏูŠ ุฏุงุฆู…ุง ุงู„ุณูƒ ุชูƒุนูŠุจ ุฃูˆ ุณูƒ ุฃุณ
191
00:12:36,720 --> 00:12:40,880
ุฎู…ุณุฉ ุฃูˆ ูƒุฐุง ุจู†ุฑูˆุญ ุจู†ูƒุงู…ู„ู‡ุง by parts ู‡ุฐุง ุงู„ุณุคุงู„
192
00:12:40,880 --> 00:12:44,580
ุงู„ุฃุณุฆู„ุฉ ุงู„ู„ูŠ ู‡ูŠ ุจู†ูƒุงู…ู„ู‡ุง ุฏุงุฆู…ุง by parts ุญุชู‰ ุงู„ูƒุณูƒ
193
00:12:44,580 --> 00:12:48,980
ุจุฑุถู‡ ูƒุณูƒ ู…ุซู„ุง ุชูƒุนูŠุจ ุฃุณ ูุฑุฏูŠ ุจุฑุถู‡ ุชุชูƒุงู…ู„ by parts
194
00:12:48,980 --> 00:12:53,100
ุงู„ุขู† ุฃูˆู„ ุดูŠุก ุจู†ุงุฎุฏ U ุทุจุนุง ู‡ู†ุง ุณูƒ ุชูƒุนูŠุจ ุจู†ุญูˆู„ู‡ ู„ู€ ุณูƒ
195
00:12:53,100 --> 00:12:56,890
ููŠ ุณูƒ ุชุฑุจูŠุน ูˆุงุญุฏุฉ ู…ู†ู‡ู… ุชุชูุงุถู„ ูˆุงู„ุซุงู†ูŠุฉ ู‚ุงุจู„ุฉ ู„ู„ุชูƒุงู…ู„
196
00:12:56,890 --> 00:13:00,290
ู„ุงูŠุด ุฃุฎุฏู†ุง ุณูƒ ุชุฑุจูŠุน ุนุดุงู† ู†ุนุฑู ุชูƒุงู…ู„ู‡ุง ุชุงู† ูˆุงู„ุณูƒ
197
00:13:00,290 --> 00:13:03,630
ุชูุงุถู„ู‡ุง ุณูƒ ููŠ ุชุงู† ุงูŠุด ุจูŠุตูŠุฑ ุชูƒุงู…ู„ ุงู„ุณูƒ ุชูƒุงู…ู„ ูŠุณุงูˆูŠ
198
00:13:03,630 --> 00:13:08,590
U ููŠ V ุณูƒ ููŠ ุชุงู† ู†ุงู‚ุต ุชูƒุงู…ู„ V dU ุงู„ู„ูŠ ู‡ูˆ ุชุงู† ุจุชุตูŠุฑ
199
00:13:08,590 --> 00:13:13,870
ุชุงู† ุชุฑุจูŠุน ููŠ ุณูƒ ุงู„ุขู† ุณูƒ ููŠ 10 ู†ุงู‚ุต ุงู„ุขู† ุณูƒ ุชุฑุจูŠุน ุณูƒ
200
00:13:13,870 --> 00:13:16,770
ููŠ 10 ุชุฑุจูŠุน ุงูŠุด ุจุฏู†ุง ู†ุนู…ู„ ููŠู‡ุงุŸ ุจุฏู†ุง ู†ุญูˆู„ ุงู„ 10
201
00:13:16,770 --> 00:13:20,850
ุชุฑุจูŠุน ู„ู€ ุณูƒ ุชุฑุจูŠุน ู†ุงู‚ุต 1 ูุจุชุตูŠุฑ ุงูŠู‡ุŸ ุงุดู‡ุฏ ุณูƒ ุชูƒุนูŠุจ
202
00:13:20,850 --> 00:13:25,410
ู†ุงู‚ุต ุณูƒ ูŠุจู‚ู‰ ุณูƒ ุชูƒุนูŠุจ ู†ุงู‚ุต ุณูƒ ูˆููŠ ู†ุงู‚ุต ู‡ู†ุง ูˆุฒุนู†ุง
203
00:13:25,410 --> 00:13:28,870
ุงู„ุชูƒุงู…ู„ ูˆุชุณุงุฑู‚ ู‡ู†ุง ุฒุงุฆุฏ ุงู„ุขู† ุชูƒุงู…ู„ ุงู„ ุณูƒ ุชูƒุนูŠุจ ู‡ุฐู‡
204
00:13:28,870 --> 00:13:32,250
ุจุงู„ุณุงู„ู… ุจู†ุฑูˆุญ ุจู†ุญูˆู„ู‡ุง ู„ู„ุฌู‡ุฉ ู‡ุฐู‡ ุจู†ุฌู…ุนู‡ุง ู…ุน ู‡ุฐู‡
205
00:13:32,250 --> 00:13:35,770
ุจูŠุตูŠุฑ 2 ุชูƒุงู…ู„ ุณูƒ ุชูƒุนูŠุจ ูˆุชูƒุงู…ู„ ุงู„ุณูƒ ุทุจุนุง ู…ุนุฑูˆูุฉ
206
00:13:35,770 --> 00:13:39,770
ู‡ูŠ ู„ูŠู† absolute ุณูƒ ุฒุงุฆุฏ ุชุงู† ุฒุงุฆุฏ C ูˆุจุนุฏูŠู† ุจู†ู‚ุณู…
207
00:13:39,770 --> 00:13:43,470
ุนู„ู‰ 2 ุจู†ุฎู„ุน ู…ู†ู‡ุง ุชูƒุงู…ู„ ุงู„ุณูƒ ุชูƒุนูŠุจ ู‡ูŠู‚ุณู… ุจุงู„ู‚ุณู…
208
00:13:43,470 --> 00:13:46,630
ุนู„ู‰ 2 ุนู„ุดุงู† ู…ุง ููŠุด ุณุทุฑ ูˆุงุณุน ู‡ู†ุง ูƒูˆูŠุณ ู‡ุฐุง
209
00:13:46,630 --> 00:13:49,890
ุจุงู„ู†ุณุจุฉ ู„ู†ุง ูŠุนู…ู„ ู„ู†ุง bypass ูˆุจุนุฏูŠู† ูƒู…ุงู† ุงุณุชุฎุฏู…ู†ุง
210
00:13:49,890 --> 00:13:53,670
ู‡ู†ุง ุญูˆู„ู†ุง ุงู„ identity ุงุณุชุฎุฏู…ู†ุง ุชุงู† ุชุฑุจูŠุน ุณูƒ ุชุฑุจูŠุน
211
00:13:53,670 --> 00:14:00,150
ู†ุงู‚ุต 1 ุชูƒุงู…ู„ ุณูƒ ุฃุณ ุฃุฑุจุนุฉ ุชุงู† ุชุฑุจูŠุน ู„ุฃู† ุงู„ุชู†ุชูŠู†
212
00:14:00,150 --> 00:14:02,370
ู…ุฑููˆุนูŠู† ู„ุฃุณุงุณ ู…ูˆุฌูˆุฏ ุงู„ุณูƒ ูˆู…ูˆุฌูˆุฏ ุงู„ุชุงู†
213
00:14:10,460 --> 00:14:13,720
ุจุธู„ ุณูƒ ุชุฑุจูŠุน ุจุธู„ ู‡ู†ุง ุณูƒ ุชุฑุจูŠุน ุงู„ุณูƒ ุชุฑุจูŠุน ุจู†ุญูˆู„ู‡ุง
214
00:14:13,720 --> 00:14:16,840
ูƒู„ู‡ุง ู„ู€ 10 ู„ูŠุดุŸ ู„ุฃู† ุชูุงุถู„ ุงู„ู€ 10 ุณูƒ ุชุฑุจูŠุน ูŠุจู‚ู‰ ุฏูŠ
215
00:14:16,840 --> 00:14:20,840
ู†ุฃุฎุฐู‡ุง dU ูŠุจู‚ู‰ ุงู„ุจุงู‚ูŠ ุงู„ู„ูŠ ู‡ูˆ ูƒู„ู‡ ู„ุงุฒู… ูŠูƒูˆู† 10 ุณูƒ
216
00:14:20,840 --> 00:14:23,560
ุชุฑุจูŠุน ุจู†ุญูˆู„ู‡ุง ู„ู€ 10 ุชุฑุจูŠุน ุฒุงุฆุฏ 1 ููŠ 10 ุชุฑุจูŠุน
217
00:14:23,560 --> 00:14:26,960
ูˆุจู†ุฏุฎู„ ุงู„ 10 ู‡ู†ุง ุจุชุตูŠุฑ 10 ุฃุณ 4 ุฒุงุฆุฏ 10 ุชุฑุจูŠุน ููŠ
218
00:14:26,960 --> 00:14:31,660
ุณูƒ ุชุฑุจูŠุน ุงู„ุฃู†ุตุงุฑ ู‡ุฐู‡ ุงู„ U ู‡ูŠ 10 ูˆุงู„ dU ู‡ูŠ ุณูƒ
219
00:14:31,660 --> 00:14:35,960
ุชุฑุจูŠุน ุจุฏูˆู† ู…ู†ุญูˆู„ ูŠุนู†ูŠ ุจุณ ุจุชุญุทูŠู‡ุง ุจุนู‚ู„ูƒ ู‡ูŠูƒ ูุจุชุตูŠุฑ
220
00:14:35,960 --> 00:14:39,540
ู‡ุฐู‡ ุชุชุนู…ู„ู‡ุง 10 ุฃุณ 4 ุนู„ู‰ 4 ูˆู‡ุฐู‡ ุชุชุนู…ู„ู‡ุง 10 ุชูƒุนูŠุจ
221
00:14:39,540 --> 00:14:39,740
ุนู„ู‰
222
00:14:42,680 --> 00:14:46,000
ุซู„ุงุซุฉ ุฅุฐุง ูƒุงู†ูˆุง ุงู„ุชู†ุชูŠู† ู…ุฑููˆุนูŠู† ุฃูˆ ุณูŠูƒูˆุฏ ุณูƒ ุฃุณ
223
00:14:46,000 --> 00:14:48,760
ุฎู…ุณุฉ ููŠ ุชุงู† ุชูƒุนูŠุจ ุงู„ุชู†ุชูŠู† ุฃูˆ ุณูŠูƒูˆุฏ ุงูŠุด ุจู†ุนู…ู„ุŸ ูŠุนู†ูŠ
224
00:14:48,760 --> 00:14:52,820
ู„ูˆ ุฃุฎุฏู†ุง ู…ู† ู‡ู†ุง ู…ู† ู‡ู†ุง ูˆุงุญุฏุฉ ุฃูˆ ุงุซู†ุชูŠู† ุจุถุงู„ ุซู„ุงุซู‡
225
00:14:52,820 --> 00:14:56,020
ุจู‚ุฏุฑุด ุฃุญูˆู„ู‡ุง ู„ู€ ุชุงู† ุฅุฐุง ุงูŠุด ุจู†ุนู…ู„ุŸ ุจู†ุงุฎุฏ ู…ู† ู‡ู†ุง
226
00:14:56,020 --> 00:14:59,340
ูˆุงุญุฏุฉ ูˆู†ุฃุฎุฐ ู…ู† ู‡ู†ุง ูˆุงุญุฏุฉ ุณูƒ ููŠ ุชุงู† ุณูƒ ููŠ ุชุงู† ู‡ูŠ
227
00:14:59,340 --> 00:15:02,240
ุชูุงุถู„ ุงู„ุณูƒ ูŠุนู†ูŠ ู„ุงุฒู… ุงู„ู„ูŠ ู‡ู†ุง ูƒู„ู‡ ูŠุชุญูˆู„ ุฅู„ู‰ ุณูƒ
228
00:15:02,240 --> 00:15:05,940
ู„ุงุฒู… ุงู„ู„ูŠ ู‡ู†ุง ูƒู„ู‡ ูŠุชุญูˆู„ ุฅู„ู‰ ุณูƒ ุจุงู„ุชุงู„ูŠ ุงู„ุขู† ุงู„ุชุงู†
229
00:15:05,940 --> 00:15:10,500
ุชุฑุจูŠุน ุจู†ุญูˆู„ู‡ุง ุฅู„ู‰ ุณูƒ ุชุฑุจูŠุน ู†ุงู‚ุต 1 ูุจู†ุฏุฎู„ ุณูƒ ุฃุณ 4
230
00:15:10,500 --> 00:15:15,020
ู‡ู†ุง ุณูƒ ุฃุณ 6 ู†ุงู‚ุต ุณูƒ ุฃุณ 4 ููŠ ุณูƒ ุชุงู† ุณุงุฑุช ุงู„ุณูƒ ู‡ูŠ U
231
00:15:15,020 --> 00:15:21,400
ูˆู‡ุฐู‡ ุฏู‡ ุฏูŠ U ูุนู‚ู„ู†ุง ู‡ูŠู†ุนู…ู„ู‡ุง ู„ูƒู† ุนู„ู‰ ุทูˆู„ ุจู†ูƒุงู…ู„ ุณูƒ
232
00:15:21,400 --> 00:15:25,420
ุฃุณ 7 ุนู„ู‰ 7 ู†ุงู‚ุต ุณูƒ ุฃุณ 5 ุนู„ู‰ 5 ุฒุงุฆุฏ C
233
00:15:28,830 --> 00:15:33,430
ุงู„ุขู† ููŠู†ุง ุขุฎุฑ ู…ุนู„ูˆู…ุฉ ุงู„ู„ูŠ ู‡ู… ุงู„ุชูƒุงู…ู„ุงุช ุงู„ู€
234
00:15:33,430 --> 00:15:38,130
trigonometric integrals ุงู„ู„ูŠ ู‡ูˆ ุงู„ product ู„ู€ sine
235
00:15:38,130 --> 00:15:41,710
ูˆ cosine ููŠ ู…ุฑุงุช ุจูŠุฌูŠ ุนู†ุง sine ููŠ sine ู„ูƒู† ู‡ุฐู‡
236
00:15:41,710 --> 00:15:46,550
ุงู„ุฒุงูˆูŠุฉ ุชุฎุชู„ู ุนู† ู‡ุฐู‡ MุŒ NุŒ MX ูˆ NX ุชูƒุงู…ู„ sine ููŠ
237
00:15:46,550 --> 00:15:50,910
cosine ูˆู‡ุฐู‡ M ูˆู‡ุฐู‡ N ูˆุชูƒุงู…ู„ cosine ููŠ cosine ูˆู‡ุฐู‡
238
00:15:50,910 --> 00:15:53,810
ุงู„ุฒุงูˆูŠุฉ ุฅูŠุงู‡ุง ู…ุฎุชู„ูุฉ ู‡ุฐู‡ ุงู„ุฒุงูˆูŠุฉ ุชุจุนุชู‡ู… ุฅูŠุงู‡ุง ู…ุฎุชู„ูุฉ
239
00:15:54,210 --> 00:15:57,110
ุงู„ุขู† ู‡ุฏูˆู„ ุงู„ุซู„ุงุซ ุชูƒุงู…ู„ุงุช ููŠู‡ ู‚ุงู†ูˆู† ุงู„ู„ูŠ ู‡ูˆ ุงู„ุซู„ุงุซ
240
00:15:57,110 --> 00:16:01,030
ู‚ูˆุงู†ูŠู† ู‡ุฏูˆู„ ูƒูŠู ุงุฌูˆุง ู‡ุฏูˆู„ ุงู„ู‚ูˆุงู†ูŠู† ู…ู† ู‚ูˆุงู†ูŠู† ุงูŠุด
241
00:16:01,030 --> 00:16:04,010
ุงู„ู„ูŠ ู‡ูˆ ู…ุฌู…ูˆุนุฉ ุฒุงูˆูŠุชูŠู† ูˆุทุฑุญ ุฒุงูˆูŠุชูŠู† ูŠุนู†ูŠ ู…ุซู„ุง
242
00:16:04,010 --> 00:16:07,090
ุงุญู†ุง ู‚ู„ู†ุง cosine a ู†ุงู‚ุต b ุชุณุงูˆูŠ cosine cosine
243
00:16:07,090 --> 00:16:10,290
ุฒุงุฆุฏ sine sine cosine a ุฒุงุฆุฏ b ุจุณ ุงู„ุฅุดุงุฑุฉ ุงู„ู„ูŠ
244
00:16:10,290 --> 00:16:14,910
ุจูŠู†ู‡ู… ุจุชุตูŠุฑ ุฒุงุฆุฏ ู†ุงู‚ุต ุงู„ุขู† ู„ูˆ ุงุญู†ุง ุฌู…ุนู†ุง ุจุงู„ุฌู…ุน ู„ูˆ
245
00:16:14,910 --> 00:16:18,290
ุงุญู†ุง ุฌู…ุนู†ุง ู‡ุฏูˆู„ ุงู„ุงุซู†ูŠู† ูุจูŠุตูŠุฑ cosine a ู†ุงู‚ุต b ุฒุงุฆุฏ
246
00:16:18,290 --> 00:16:21,630
cosine a ุฒุงุฆุฏ b ุงู„ุขู† ู‡ุฐู‡ ุจุชุฑูˆุญ ู…ุน ู‡ุฐู‡ ุจูŠุธู„ ุงุซู†ูŠู†
247
00:16:21,630 --> 00:16:25,310
ู‡ุฐู‡ 2 cosine cosine ูˆุจู†ู‚ุณู… ุนู„ู‰ 2 ูุจุชุทู„ุน ู„ูŠ
248
00:16:25,310 --> 00:16:28,490
cosine a ุจ cosine b ูŠุจู‚ู‰ cosine ููŠ cosine ู‚ุงู†ูˆู†
249
00:16:28,490 --> 00:16:31,750
cosine ููŠ cosine ู‡ูŠ ุนุจุงุฑุฉ ุนู† ู†ูุณ cosine ุทุฑุญ
250
00:16:31,750 --> 00:16:35,110
ุงู„ุฒุงูˆูŠุชูŠู† ุฒุงุฆุฏ cosine ู…ุฌู…ูˆุน ุงู„ุฒุงูˆูŠุชูŠู† ู„ูŠุดุŸ ู„ุฃู†ู‡
251
00:16:35,110 --> 00:16:39,110
ุงุฌุช ู‡ุฐู‡ ุจุงู„ุฌู…ุน ูŠุจู‚ู‰ ุฌู…ุน cosine ุงู„ูุฑู‚ ุฒุงุฆุฏ cosine
252
00:16:39,110 --> 00:16:42,880
ุงู„ู…ุฌู…ูˆุนุฉ ุทูŠุจ ู„ูˆ ุงุญู†ุง ุทุฑุญู†ุง ู‡ุฐู‡ ู…ู† ู‡ุฐู‡ุŒ ู‡ุฐู‡ ู†ุงู‚ุต
253
00:16:42,880 --> 00:16:47,300
ู‡ุฐู‡ุŒ ุงูŠุด ุจุชุตูŠุฑุŸ ู„ุฃู† ู‡ุฐู‡ ู†ุงู‚ุต ู‡ุฐู‡ ุชุณุงูˆูŠ ู‡ุฐู‡ ู†ุงู‚ุต
254
00:16:47,300 --> 00:16:50,400
ู‡ุฐู‡ ุจุชุตูŠุฑ ุจุชุฑูˆุญ ู…ุน ุจุนุถุŒ ูˆู‡ุฐู‡ ู†ุงู‚ุต ู‡ุฐู‡ ุจูŠุตูŠุฑ ู†ุฌู…ุนู‡ู…
255
00:16:50,400 --> 00:16:53,620
ู„ุฃู† ู†ุงู‚ุต ููŠ ู†ุงู‚ุต ุจูŠุตูŠุฑ ุฒุงุฆุฏุŒ ูŠุจู‚ู‰ 2 sin ููŠ
256
00:16:53,620 --> 00:16:56,740
sinุŒ 2 sin ููŠ sinุŒ ูˆุจู†ู‚ุณู… ุนู„ู‰ 2ุŒ ุจูŠุทู„ุน
257
00:16:56,740 --> 00:17:00,740
ู…ุนู†ู‰ ุงูŠุดุŸ ุชูƒุงู…ู„ sin sinุŒ ูŠุจู‚ู‰ ุชูƒุงู…ู„ sin sin ู‡ูŠ
258
00:17:00,740 --> 00:17:04,480
ุนุจุงุฑุฉ ุนู† ู†ุต ุงู„ cosine ูุฑู‚ ุงู„ุฒุงูˆูŠุชูŠู† ู†ุงู‚ุต cosine
259
00:17:04,480 --> 00:17:09,080
ู…ุฌู…ูˆุน ุงู„ุฒุงูˆูŠุชูŠู† ู‡ุฐู‡ ุงู„ู‚ุงู†ูˆุฉ ุทุจุนุง ุงู„ู‚ุงู†ูˆู† ุงู„ุซุงู„ุซ ู‡ุฐุง
260
00:17:09,080 --> 00:17:12,080
sin ููŠ ุงู„ cosine ุฌุงูŠ ุจุฑุถู‡ ู†ูุณ ุงู„ุดูŠุก ุฒูŠูƒ ุจุณ ู…ุด
261
00:17:12,080 --> 00:17:15,640
cosine ู‚ุงู†ูˆู† ุงู„ cosine ูƒุงู† ู‚ุงู†ูˆู† ุงู„ sin sin ุงู„ูุฑู‚
262
00:17:15,640 --> 00:17:18,500
ุจูŠู† ุฒุงูˆูŠุชูŠู† ูˆ sin ู…ุฌู…ูˆุน ุงู„ุฒุงูˆูŠุชูŠู† ุจู†ูุณ ุงู„ูƒูŠููŠุฉ
263
00:17:18,500 --> 00:17:22,620
ุงู„ุทุฑูŠู‚ุฉ ูุจูŠุทู„ุน ู†ุต sin ูุฑู‚ ุจูŠู† ุงู„ุฒุงูˆูŠุชูŠู† ุฒุงุฆุฏ sin
264
00:17:22,620 --> 00:17:26,340
ู…ุฌู…ูˆุน ุงู„ุฒุงูˆูŠุชูŠู† ูƒูˆูŠุณ ู‡ุฏูˆู„ ุงู„ู‚ูˆุงู†ูŠู† ุงุญูุธู‡ู… ู„ูˆ ู†ุณูˆุช
265
00:17:26,340 --> 00:17:31,140
ุณูŠูุฑู‡ุง ุจุชุฑูˆุญ ุชุนู…ู„ูˆู‡ู… ุจุงู„ุทุฑูŠู‚ุฉ ุงู„ุณุงุจู‚ุฉ ุณู‡ู„ ูˆุจุณุฑุนุฉ
266
00:17:31,140 --> 00:17:37,480
ูŠุนู†ูŠ ุทูŠุจ ุจู†ุดูˆู ููŠ ุงู„ุฃู…ุซู„ุฉ ุชูƒุงู…ู„ sin 3x cos 5x dx
267
00:17:37,480 --> 00:17:40,920
ู„ุฃู† ู‡ูŠ ุงู„ุฒุงูˆูŠุฉ ู…ุฎุชู„ูุฉ ุนู† ุงู„ุฒุงูˆูŠุฉ ู‡ุฐู‡ ูˆู‡ุฐู‡ sin ููŠ
268
00:17:40,920 --> 00:17:44,260
ุงู„ cosine ุงูŠุด ุงู„ู‚ุงู†ูˆู† ุชุจุนู‡ู… ุงู„ู„ูŠ ู‡ูˆ ู†ุต ุงู„ูุฑู‚ ุจูŠู†
269
00:17:44,260 --> 00:17:48,020
sin ุงู„ูุฑู‚ ุจูŠู† ุฒุงูˆูŠุชูŠู† ุฒุงุฆุฏ sin ู…ุฌู…ูˆุน ุงู„ุฒุงูˆูŠุชูŠู†
270
00:17:48,020 --> 00:17:52,260
ูŠุจู‚ู‰ 3 ู†ุงู‚ุต 5 ุทุจุนุง ุญุงูุธูˆุง ุนู„ู‰ ุงู„ุชุฑุชูŠุจ ู„ู‡ุฐู‡ M ู†ุงู‚ุต
271
00:17:52,260 --> 00:17:56,160
M ูŠุนู†ูŠ ู‡ุฐู‡ ู†ุงู‚ุต ู‡ุฐู‡ ู„ุฃู†ู‡ุง sin cosine ู‡ุฐู‡ ู†ุงู‚ุต ู‡ุฐู‡
272
00:17:56,160 --> 00:18:00,760
ูŠุจู‚ู‰ 3 ู†ุงู‚ุต 5 ูˆู‡ุฐู‡ 3 ุฒุงุฆุฏ 5 3 ู†ุงู‚ุต 5 ุงู„ู„ูŠ ู‡ูŠ ู†ุงู‚ุต
273
00:18:00,760 --> 00:18:05,280
2 ุงู„ู€Sin ุฃูˆุถุฉ ุชุฎุฑุฌ ู…ู† ู†ุงู‚ุตู‡ุง ุจุฑุง Sine 2X ุฒุงุฆุฏ Sine
274
00:18:05,280 --> 00:18:09,920
8X DX ุงู„ุขู†ู‡ุง ุจุชุชูƒุงู…ู„ ุณุงุฑุช ุจุณู‡ูˆู„ุฉ Sine 2X ุชูƒุงู…ู„ู‡ุง
275
00:18:09,920 --> 00:18:13,900
ู†ุงู‚ุต Cos ููŠ ู†ุงู‚ุต ุจุชุตูŠุฑ ุฒุงุฆุฏ Cos 2X ุนู„ู‰ 2 ุชูƒุงู…ู„
276
00:18:13,900 --> 00:18:20,780
ุงู„ู€Sin ู†ุงู‚ุต Cos 8X ุนู„ู‰ 8 ุทูŠุจ Cos Cos ุชูƒุงู…ู„ Cos ููŠ
277
00:18:20,780 --> 00:18:25,400
Cos ุทุจุนุง Cos ููŠ Cos ุงู„ู„ูŠ ู‡ูˆ ู†ุต Cos ุงู„ูุฑู‚ ุจูŠู†
278
00:18:25,400 --> 00:18:29,100
ุงู„ุฒุงูˆูŠุชูŠู† ุฒุงุฆุฏ Cos ู…ุฌู…ูˆุน ุงู„ุฒุงูˆูŠุชูŠู† ุทุจุนุง ู‡ู†ุง ูุฑู‚ ุจูŠู†
279
00:18:29,100 --> 00:18:32,260
ุฐุงุชูŠู† ู„ูŠู‡ ุงู„ุฃูˆู„ู‰ ู†ุงู‚ุต ุงู„ุซุงู†ูŠุฉ 3 ู†ุงู‚ุต 2 ูˆ
280
00:18:32,260 --> 00:18:35,320
ุจุนุฏูŠู† ุงูŠู‡ 3 ุฒุงุฆุฏ 2 3 ู†ุงู‚ุต 2 1
281
00:18:35,320 --> 00:18:38,600
ูุจูŠุทู„ุน cosine X ูˆ ุซู„ุงุซุฉ ุฒุงุฆุฏ ุงุซู†ูŠู† ุงู„ู„ูŠ ู‡ูˆ ุฎู…ุณุฉ X
282
00:18:38,600 --> 00:18:41,580
ุชูƒุงู…ู„ ุงู„ cosine ู„ุฃู† ุจู†ูƒุงู…ู„ ุจุณู‡ูˆู„ุฉ ุชูƒุงู…ู„ ุงู„ cosine
283
00:18:41,580 --> 00:18:44,800
ุงู„ู„ูŠ ู‡ูŠ sine ูˆ ุชูƒุงู…ู„ ุงู„ cosine ู‡ู†ุง ุจุฑุถู‡ sine ุฎู…ุณุฉ
284
00:18:44,800 --> 00:18:49,100
X ุนู„ู‰ ุฎู…ุณุฉ ุฒุงุฆุฏ C ูˆ ุจูุชู’ ู…ู† ุทูˆู„ ุฎู„ุตู†ุง ุงู„ู„ูŠ ู‡ูˆ
285
00:18:49,100 --> 00:18:53,260
section 8.2 ุงู„ section ุจุณูŠุท ูˆุณู‡ู„ ูˆุฅู† ุดุงุก
286
00:18:53,260 --> 00:18:56,040
ุงู„ู„ู‡ ู†ู†ุชู‚ู„ ู„ู„ section ุงู„ู„ูŠ ุจุนุฏู‡ ุงู„ู…ุฏุฑุณุฉ