從古巴比倫計算的 #圓周率(#π)為 3.125,到古希臘數學家阿基米德,證得 π 介乎 22/7 到 223/71 之間,再到 5 世紀祖沖之求 π 至小數後 7 位數……人類一直努力更精確計算無理數(Irrational number) π。瑞士研究人員本週一宣佈,藉超級電腦運算之力,計出當前最準確的圓周率,至小數點後 62.8 萬億個數字。但來萬億位又有甚麼意義?
詳細全文:
https://bit.ly/3sstppx
延伸專題:
【籃球結合數學,得分更容易?】
https://bit.ly/2QMS2yt
【文學遊囈:數學題詩】
http://bit.ly/39UYYy1
【「數學焦慮」:學生資質太差,還是教育方法太差?】
https://goo.gl/G14eRZ
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同時也有28部Youtube影片,追蹤數超過8萬的網紅賭Sir【杜氏數學】HermanToMath,也在其Youtube影片中提到,?賭Sir 幫你急救 DSE 數學: http://www.HermanToMath.com ---------- ?️賭Sir是杜氏數學Herman To Math的始創人 ?全港唯一「完爆」【DSE Core+M1+M2】、【IAL 12科Maths】、【AL Pure+Applied】、【CE...
「irrational number」的推薦目錄:
- 關於irrational number 在 CUP 媒體 Facebook 的最佳解答
- 關於irrational number 在 GIGAZINE Facebook 的精選貼文
- 關於irrational number 在 Sarimah Ibrahim Facebook 的最佳解答
- 關於irrational number 在 賭Sir【杜氏數學】HermanToMath Youtube 的精選貼文
- 關於irrational number 在 Herman Yeung Youtube 的精選貼文
- 關於irrational number 在 Herman Yeung Youtube 的最佳貼文
- 關於irrational number 在 Rational and Irrational Numbers - YouTube 的評價
- 關於irrational number 在 What are Irrational Numbers? | Number System | Don't Memorise 的評價
- 關於irrational number 在 Is an irrational number odd or even? - Mathematics Stack ... 的評價
- 關於irrational number 在 How to compute the digits of an irrational number one by one? 的評價
- 關於irrational number 在 27 Irrational Numbers ideas - Pinterest 的評價
irrational number 在 GIGAZINE Facebook 的精選貼文
人は「細かい数字」より「大体の数字」を高く評価する(2020)
https://gigazine.net/news/20200725-irrational-preference-round-number/
irrational number 在 Sarimah Ibrahim Facebook 的最佳解答
Someone sent this to me. I agree. We cant keep using lockdowns to handle this situation. Poverty is on the rise.💙😌
-“ A CMCO on KL and Selangor is overkill. What happened to targeted lockdowns? We cannot be lurching from one lockdown to the next, especially for Klang Valley. Do mass testing with antigen RTK to quickly identify and isolate positive cases. (https://codeblue.galencentre.org/2020/10/12/klang-valley-lockdown-no-dine-ins-jogging-work-letter-needed-to-cross-kl-selangor-putrajaya/)
What is the justification for such a strict lockdown on the entire capital city and Selangor? Are we going to see police roadblocks throughout KL and Selangor like during MCO 1? The government must reverse this decision. It is a wholly disproportionate public health response.
With just 34 local Covid cases reported in KL within past 14 days as of yesterday, the govt shuts down the entire capital city? Putrajaya only has 13 cases. Selangor has 224 cases, but only two are red zones (Petaling - 53 cases, Klang - 82 cases).
A Klang Valley CMCO is completely irrational.
And news flash, economic sector can't continue if you prevent people from going out. And obviously we'll see Covid cases reported every day because we can never eradicate the virus until we get a vaccine. After lockdown is lifted, then Covid cases will go up again. Then what?
The MCO was supposed to buy us time to prepare the health care system for future outbreaks, NOT to eradicate the virus. What did we do for the past six months since MCO in March? Are you saying we didn't prepare enough?
WHO has warned against using lockdowns as a primary means of controlling the virus, stating it could have a dramatic impact on poverty. What exactly do you hope to achieve with a Klang Valley lockdown? Slow the virus transmission to prepare some more? Aren't we already prepared?
The government has repeatedly said, as recently as less than a week ago, that our health care system is prepared for Covid outbreaks. So what on earth is the justification for a Klang Valley CMCO that generally prohibits people from leaving home except for work/ buy necessities?
PM said May 1 that it’s impossible for any country to hit zero Covid cases. Ismail Sabri repeated this point on Oct 3. What I want to know is — what exactly is a tolerable number of daily Covid cases in a district for the govt? 20? 50? 100? Or nationwide — 200? 500? 1,000?
MOH claims that they advised a Klang Valley CMCO to prevent yellow zones from turning red, as various districts are recording new cases every day. Well, of course we'll see Covid infections daily; that's the nature of the disease. The old govt narrative (which it has since discarded) during the early days of the RMCO of less than 50 daily cases, or even ZERO cases a day, made absolutely no sense.
With increased testing, we’ll naturally pick up more cases. The more you test, the more you get. Important thing is to expand testing so that we detect and isolate infectious people quickly. So it doesn’t matter even if we record hundreds of cases, as long as we isolate quickly.
Now police are saying they'll mount roadblocks in the same way like the first MCO in March. So is this CMCO or MCO 1? Expect huge traffic jams in Klang Valley if the cops are gonna check each car for an employment letter to get to work. And if authorities are going to treat Klang Valley CMCO like MCO 1, expect to see the repeated hurdles to seeking medical treatment that cancer patients previously suffered, not to mention postponed appointments for regular medications from clinics for those with chronic conditions like diabetes and high blood pressure. (https://www.malaymail.com/news/malaysia/2020/10/12/cmco-police-to-mount-roadblocks-again-in-kl-selangor-putrajaya/1912050)
I'm sorry to say, but Malaysia's Covid public health policies since the Sabah election were an absolute shambles. No restriction of peninsula-Sabah travel during the election, either for politicians/ campaigners/ voters (the EC could have allowed outstation voters to vote in peninsular stations; they didn't). No enforcement of SOPs on any campaign rally during the election. No mandatory 14-day quarantine upon return from Sabah. No significant expansion of testing -- either RT-PCR or rapid antigen tests.
And before the election, no prosecution of lawmakers who clearly (and even admitted themselves) broke SOPs, including mandatory quarantine. I don't think enforcers even checked government premises to see if they follow the SOPs that they enforce on private citizens and businesses, like MySejahtera check-ins, provision of hand sanitizers, or wearing face masks. Visit government offices in Putrajaya and see how many actually comply with SOPs. Parliament doesn't mandate MySejahtera and hardly provides any hand sanitizer throughout the entire building.
The government also ignored repeated warnings from medical professionals and civil society about prison and detention centre outbreaks. Worse, enforcers even dragged people to police stations and made them wait in crowded and congested areas just to receive their saman. The Sabah surge came from cases first reported on Sept 1 in the Lahad Datu police lock-up and Tawau prison.
And now suddenly, wham, a two-week lockdown on the entire Klang Valley, even though the country's main Covid hospital, Sungai Buloh Hospital, is located in Selangor, not to mention the many other tertiary hospitals in the Klang Valley. Of all places, Klang Valley has the best public health care system. How can Klang Valley not be prepared for a Covid outbreak?
People may be allowed to go to work during the CMCO, but what about small businesses and roadside stalls? Only privileged white collar workers can afford to work from home. And only lawmakers and civil servants can go through any lockdown without worrying about next month's salary.
Boo Su-Lyn (no idea who that is)
irrational number 在 賭Sir【杜氏數學】HermanToMath Youtube 的精選貼文
?賭Sir 幫你急救 DSE 數學: http://www.HermanToMath.com
----------
?️賭Sir是杜氏數學Herman To Math的始創人
?全港唯一「完爆」【DSE Core+M1+M2】、【IAL 12科Maths】、【AL Pure+Applied】、【CE Maths+A.Maths】的數學導師
?全港第一最多訂閱粉絲的數學教育YouTuber
?YouTube觀看次數超越700萬、訂閱粉絲超過60000人
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? Mensa Club member
? 中文大學 數學碩士畢業(Big Data stream)
? 中文大學 風險管理學士畢業
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?流行文學作家,出版著作:
《賭馬男人嫁得過》?(2020)
《YouTuber新手到網紅》?(2019、2020再版增訂本)
《5**數學男人嫁得過》?(2019)
《碌葛男人嫁得過》?(2018)
《賭波男人嫁得過》?(2018、同年再版)
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?YouTuber Go網絡課程 全港最平+獨家 報讀優惠:
http://hermantomath.blogspot.com/2019/03/youtuber-go-link.html
?賭Sir親自教你量產影片 做一個睡眠飽滿嘅YouTuber:
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?YouTuber Go直播足本重溫 95折優惠碼「hermantomath」:
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賭Sir考試戰績:
新制中六DSE: (2016 M2 + 2017 M1)
?數學必修 (Mathematics) 一take過 奪5**
?數學延伸M1 (Calculus and Statistics) 一take過 奪5**
?數學延伸M2 (Algebra and Calculus) 一take過 奪5**
國際高考International Advanced Level: (2017 + 2018)
?Core Math 1 2 一take過 奪A
?Core Math 3 4 一take過 奪A
?Further Pure Math 1 一take過 奪A
?Further Pure Math 2 一take過 奪A
?Further Pure Math 3 一take過 奪A
?Mechanics 1 一take過 奪A
?Mechanics 2 一take過 奪A
?Mechanics 3 一take過 奪A
?Statistics 1 一take過 奪A
?Statistics 2 一take過 奪A
?Statistics 3 一take過 奪A
?Decision Math 1 一take過 奪A
舊制中七高考: (2011)
?純粹數學 (Pure Mathematics) 一take過 奪A
?應用數學 (Applied Mathematics) 一take過 奪A
舊制中五會考: (2009)
?數學 (Mathematics) 一take過 奪A
?附加數學 (Additional Mathematics) 一take過 奪A
#未來半年會每周出神技片 #直至DSE2021 #記得訂閱同分享
irrational number 在 Herman Yeung Youtube 的精選貼文
HKDSE Mathematics 數學天書 訂購表格及方法︰ http://goo.gl/forms/NgqVAfMVB9
課程簡介︰ https://youtu.be/Rgm7yUVG9cY
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Herman Yeung Mock 模擬試題集 B︰ 包括 6 份 Paper 2 卷二MC
Mock 模擬試題集B - Set 1 (共1小時5分鐘) https://www.youtube.com/playlist?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 2 (共55分鐘) https://youtu.be/fCVzjV7gmL0?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 3 (共56分鐘) https://youtu.be/3SYsZE0ZL_g?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 4 (共1小時1分鐘) https://youtu.be/VpuohzxrC-Q?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 5 (共1小時3分鐘) https://youtu.be/L0vRGyCjaRs?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 6 (共1小時6分鐘) https://youtu.be/-XfqhtoQQhA?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
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HKDSE 數學 Core 各天書 的內容︰ https://www.facebook.com/hy.publishing/photos/a.312736375489291.68655.198063650289898/933817946714461/?type=3&theater
HKDSE 數學 Core 特別快車班
28堂 (共7本天書) 完成整個 HKDSE 數學 Core
(中一至中六) 要考的所有課題,
適合任何考 HKDSE 的同學上課 (中四至中六都合適)
(p.s. Herman Yeung 所有天書,中英對照)
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DSE 數學 Core 天書 A: https://www.youtube.com/playlist?list=PLzDe9mOi1K8p2A7HMhwz4udhLJTQt9p2b
DSE 數學 Core 天書 B: https://www.youtube.com/playlist?list=PLzDe9mOi1K8rwG72J-TSOYyLyaqBVuvGV
DSE 數學 Core 天書 C: https://www.youtube.com/playlist?list=PLzDe9mOi1K8odfBVQx48_i9qe6II5OhtL
DSE 數學 Core 天書 D: https://www.youtube.com/playlist?list=PLzDe9mOi1K8rpwKQvMwGSscFQo9vNiJEs
DSE 數學 Core 天書 E: https://www.youtube.com/playlist?list=PLzDe9mOi1K8qapGxN7XDZHxTUm8UTItB0
DSE 數學 Core 天書 F: https://www.youtube.com/playlist?list=PLzDe9mOi1K8rGQfY7lSwPfEpri_y3XBqG
DSE 數學 Core 天書 G: https://www.youtube.com/playlist?list=PLzDe9mOi1K8p_vodcg2qObWmOUc_TxbFy
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irrational number 在 Herman Yeung Youtube 的最佳貼文
HKDSE Mathematics 數學天書 訂購表格及方法︰ http://goo.gl/forms/NgqVAfMVB9
課程簡介︰ https://youtu.be/Rgm7yUVG9cY
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Herman Yeung Mock 模擬試題集 B︰ 包括 6 份 Paper 2 卷二MC
Mock 模擬試題集B - Set 1 (共1小時5分鐘) https://www.youtube.com/playlist?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 2 (共55分鐘) https://youtu.be/fCVzjV7gmL0?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 3 (共56分鐘) https://youtu.be/3SYsZE0ZL_g?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 4 (共1小時1分鐘) https://youtu.be/VpuohzxrC-Q?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 5 (共1小時3分鐘) https://youtu.be/L0vRGyCjaRs?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
Mock 模擬試題集B - Set 6 (共1小時6分鐘) https://youtu.be/-XfqhtoQQhA?list=PLzDe9mOi1K8qJWBiSonbhykjAZ7Z11Tiy
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HKDSE 數學 Core 各天書 的內容︰ https://www.facebook.com/hy.publishing/photos/a.312736375489291.68655.198063650289898/933817946714461/?type=3&theater
HKDSE 數學 Core 特別快車班
28堂 (共7本天書) 完成整個 HKDSE 數學 Core
(中一至中六) 要考的所有課題,
適合任何考 HKDSE 的同學上課 (中四至中六都合適)
(p.s. Herman Yeung 所有天書,中英對照)
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DSE 數學 Core 天書 A: https://www.youtube.com/playlist?list=PLzDe9mOi1K8p2A7HMhwz4udhLJTQt9p2b
DSE 數學 Core 天書 B: https://www.youtube.com/playlist?list=PLzDe9mOi1K8rwG72J-TSOYyLyaqBVuvGV
DSE 數學 Core 天書 C: https://www.youtube.com/playlist?list=PLzDe9mOi1K8odfBVQx48_i9qe6II5OhtL
DSE 數學 Core 天書 D: https://www.youtube.com/playlist?list=PLzDe9mOi1K8rpwKQvMwGSscFQo9vNiJEs
DSE 數學 Core 天書 E: https://www.youtube.com/playlist?list=PLzDe9mOi1K8qapGxN7XDZHxTUm8UTItB0
DSE 數學 Core 天書 F: https://www.youtube.com/playlist?list=PLzDe9mOi1K8rGQfY7lSwPfEpri_y3XBqG
DSE 數學 Core 天書 G: https://www.youtube.com/playlist?list=PLzDe9mOi1K8p_vodcg2qObWmOUc_TxbFy
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irrational number 在 Is an irrational number odd or even? - Mathematics Stack ... 的推薦與評價
An irrational number only makes sense if we look at numbers beyond the rationals. In any extension of the rationals we will find the number 12 ... ... <看更多>
irrational number 在 Rational and Irrational Numbers - YouTube 的推薦與評價
... <看更多>