Why is 0! = 1?

Sdílet
Vložit
  • čas přidán 29. 04. 2014
  • Main site: www.misterwootube.com
    Second channel (for teachers): / misterwootube2
    Connect with me on Twitter ( / misterwootube ) or Facebook ( misterwootube)

Komentáře • 18K

  • @baxwarrior1681
    @baxwarrior1681 Před 5 lety +153137

    I can't believe I'm watching this video for entertainment

    • @amadodiallo3167
      @amadodiallo3167 Před 5 lety +6565

      This is the true message that all teachers should learn:
      "No matter how uninterested a student is in a topic, if you teach it right, you can make it entertaining to them and help them learn."

    • @gamingmasterjak7467
      @gamingmasterjak7467 Před 5 lety +230

      @bax warrior me neither

    • @baxwarrior1681
      @baxwarrior1681 Před 5 lety +701

      @@amadodiallo3167 Absolutely, I got a teacher that has been able to make boring even n-dimentional curves

    • @marinas1312
      @marinas1312 Před 5 lety +74

      Same

    • @Teqnyq
      @Teqnyq Před 5 lety +264

      *m u s t o b e y r e c o m m e n d a t i o n s*

  • @alelanzz5889
    @alelanzz5889 Před 5 lety +7255

    Teacher: "and i divided by one"
    Class: "WOOAHHHH!"

  • @cthoadmin7458
    @cthoadmin7458 Před rokem +1453

    Someone who clearly loves his job. Thank god there are people like this in teaching.

  • @samcorbett8783
    @samcorbett8783 Před 7 měsíci +394

    the slow roar of the classroom realizing at 2:48 to 2:55 must have felt like being an absolute rockstar for teachers. If I would have heard this kind of reaction from the classmates around me, the entire atmosphere could have been different.

  • @ni5hu
    @ni5hu Před 4 lety +8820

    This is exactly what a teacher is supposed to do for students: create curiosity towards the subject.

    • @akira-chan591
      @akira-chan591 Před 4 lety +227

      I have a teacher like that and holy crap. Everything he teaches me, I almost always get what he's trying to teach me. People always think teaching is easy and everyone can do that. Well yeah but not everyone does it so well like this teacher in the video. I think thats really cool and see it as a gift ✨😊

    • @headhumper3398
      @headhumper3398 Před 4 lety +29

      the students wont stfu, is that how it is these days?

    • @soopy8909
      @soopy8909 Před 4 lety +67

      I pretty sure he's the no.1 math teacher in Australia

    • @seemadave1095
      @seemadave1095 Před 4 lety +13

      @@akira-chan591 you right. Our education system is itself just a big crap

    • @MK-ju5ys
      @MK-ju5ys Před 4 lety +5

      @@headhumper3398 yep that basically most of the lectures nowadays

  • @saarakassimali3893
    @saarakassimali3893 Před 3 lety +3848

    Wow math is actually interesting when someone knows how to explain it well

    • @delta8551
      @delta8551 Před 3 lety +12

      Shi kha 😂

    • @MaksKCS
      @MaksKCS Před 3 lety +88

      How to roast all math teachers with 1 sentence

    • @vectrom21
      @vectrom21 Před 3 lety +50

      You can say that to almost all subjects actually.

    • @delta8551
      @delta8551 Před 3 lety +5

      @@vectrom21 teachers sucks already

    • @arneshgupta1364
      @arneshgupta1364 Před 3 lety +34

      a raised to power 0 is one. Thats just how it is
      Its a rule of exponents. Its a law so shut up and stop disturbing the class
      Almost every maths teacher

  • @dorpachter8577
    @dorpachter8577 Před 10 měsíci +844

    My favorite argument for why 0! = 1 is the Combinatorical argument for it.
    In Combinatorics, n! is the same as the number of unique ways you can rearrange n items into n unique slots, because you would have n choices for where to place the 1st item, n-1 choices to place the next item, and so forth, you multiply all of your choices to get n!.
    So 0! should therefore be the number of ways to rearrange 0 objects in 0 slots, which would be 1 because there's only 1 way to do it and you cannot change it.

    • @ankusaini6092
      @ankusaini6092 Před 9 měsíci +22

      Shouldn't that be 0?

    • @aj76257
      @aj76257 Před 9 měsíci +164

      @@ankusaini6092There’s 1 way to arrange nothing

    • @braziliantsar
      @braziliantsar Před 9 měsíci +21

      Oh yeah, anagrams! The only practical use I know for factorials

    • @parsleyeugene
      @parsleyeugene Před 9 měsíci +4

      Amazing!

    • @judassab
      @judassab Před 9 měsíci +5

      @@aj76257 which is?

  • @ronnysharma6767
    @ronnysharma6767 Před 11 měsíci +160

    I love his lesson at the end about Fourier! Those kids are lucky to have such a passionate math teacher. You can just feel his enthusiasm and passion for it when he was giving that explanation.

  • @Helm_To_108
    @Helm_To_108 Před rokem +10587

    For future internet historians:
    At 1:22 Mr. Woo mentions "People who have spent time on their phones recently know these numbers very well". This is because in 2014 a mobile game called "2048" was all the rage. In that game you slide numbered tiles around to combine like numbered tiles to create larger numbered tiles. The lowest number is 2, so as you can imagine the combinations follow a 2n pattern. Hence 2, 4, 8, 16, etc is quite familiar to young students at the time.

  • @DrJones0801
    @DrJones0801 Před 4 lety +6310

    Meanwhile my math teacher is: "That's just the way it is. Don't question it!"

    • @taekwondotime
      @taekwondotime Před 4 lety +300

      Which usually means they don't know the answer either, they only know how to regurgitate what they've learned.

    • @DrJones0801
      @DrJones0801 Před 4 lety +54

      @@dhruvbhagchandani It wasn't my intention to try to get likes, only to speak my mind. And if you're gonna insult someone, at least do it right and write *god's* sake.

    • @plazinga
      @plazinga Před 4 lety +10

      You and I have had different teachers. I learned this in middle school when we did probability in algebra. It’s a really simple argument to follow I don’t understand how anyone could be confused by it

    • @DrJones0801
      @DrJones0801 Před 4 lety +85

      @@plazinga See it's exactly that mindset that makes my math teacher unbearable. He thinks that because *he* understands it, everyone else also must, and thus he belittles students when they don't know the answer.

    • @igrnge2883
      @igrnge2883 Před 4 lety +5

      **STOLEN COMMENT ALERT**

  • @turtlesandwich77
    @turtlesandwich77 Před 8 měsíci +60

    Their reactions when the explanation came was so relatable. It's one of those Maths things that sounds like it's gonna be so complicated but it boils down to something quite simple and you wonder why you couldnt see it from the start.
    And this teacher/lecturer/professor would have me getting good grades. He makes me want to learn, and makes it enjoyable and approachable.

  • @stephenho5272
    @stephenho5272 Před 10 měsíci +359

    I graduated in Electrical Engineering from one of the top universities in the world 35 years ago and no one has ever shown or explained to me these proofs and I accepted these as truths or axioms. Mad respect to this teacher!

    • @youssefbencheikh8637
      @youssefbencheikh8637 Před 9 měsíci +3

      May I ask what was th university you attended?

    • @francescom2027
      @francescom2027 Před 9 měsíci +20

      apparently one of the top universities in the world doesn't teach its engineers the definition of factorial nor how to distinguish a proof from a fun fact..

    • @youssefbencheikh8637
      @youssefbencheikh8637 Před 9 měsíci +34

      @@francescom2027 @francescom2027 i think you should learn to read the comment before making such a stupid reply.
      He was implying that they didn't teach him _why_ 0! = 1, not that they didn't teach him factorial in general. There is clear difference between the _how_ and the _why_
      Knowledge of how concepts in mathematics work provides a better understanding of the subject in general, explaining why 0! = 1 is not a "fun fact", as you would appear to think
      Honey, you might want to review your levels in reading comprehension and mathematics rather than nagging at random people all day.

    • @francescom2027
      @francescom2027 Před 9 měsíci +9

      @@youssefbencheikh8637 the explanation in the video is not a proof but a fun fact. 0!=1 by definition of factorial. This definition is necessary because every factorial ends with 1!, and:
      1!=1(1-1)!=1*0!=0!
      You'll convey that you don't really need Princeton for this...

    • @uzeyircinar462
      @uzeyircinar462 Před 7 měsíci +4

      actually it isnt a proof and correct. We defined it because ıt works us. when we need it we accept it like that. Think what is union sets of empty ? can you connect empty things ?

  • @tafm3446
    @tafm3446 Před 5 lety +17032

    How many people have asked their teachers and were told “...because it just is”

    • @remyjones9146
      @remyjones9146 Před 5 lety +695

      Literally. So frustrating.

    • @fernandozavala2661
      @fernandozavala2661 Před 5 lety +417

      I got what you said, it's really frustrating. But look this way: "...because it just is" is a quite more practical and easier way to continue with other topics, sometimes it is just necessary.

    • @EsDoncor
      @EsDoncor Před 5 lety +299

      Not always the most curious people become teachers and on many places around the world they're usually underpaid. Thank god we now have social networks like CZcams where we can watch really enthusiastic educators like this one. We as society must spread the world about this sort of content in the web so more people have access to it and more people feel inspired to produce content like this with that same enthusiasm

    • @ryandaepic1838
      @ryandaepic1838 Před 5 lety +17

      I got so used to that so when I met this I figured it out myself.

    • @Mianhe
      @Mianhe Před 5 lety +57

      Literally why i flunked math when we immigrated here in Canada. They over explain the simple stuff, yet when it came to trigo they just tell us to press buttons on the calculator

  • @JD-po3yl
    @JD-po3yl Před 4 lety +6655

    Wow, a teacher who actually *teaches*

    • @Nath_here_is_music
      @Nath_here_is_music Před 4 lety +20

      JD actually, the fonction and the Fourier proposition, works with function that repeat, so it’s quite false

    • @kakouhai7162
      @kakouhai7162 Před 4 lety +3

      Whoooosh

    • @AntonChasnyk
      @AntonChasnyk Před 4 lety +3

      @@Nath_here_is_music no. Just change Fourier infinite sum to Fourier integral

    • @lightfgd
      @lightfgd Před 4 lety +18

      With a class who is actually interested!

    • @carrots50
      @carrots50 Před 4 lety

      They are called "educators" :)

  • @AsadbekN
    @AsadbekN Před 5 měsíci +210

    Anyone from 2024?

  • @manojkumar-vt4uw
    @manojkumar-vt4uw Před 2 měsíci +112

    Who are watching in 2024?

  • @photonic083
    @photonic083 Před 2 lety +11984

    I like how when he says "people who have spent time on their phones recently knows these numbers VERY WELL" is referring to the 2048 game which was popular at the time

    • @icedrassin7265
      @icedrassin7265 Před 2 lety +632

      ohh good catch I completly forgot about that game.

    • @remikarim562
      @remikarim562 Před 2 lety +250

      When I heard it this reference i was like was it actually 7 years ago

    • @Dyvo84
      @Dyvo84 Před 2 lety +101

      thought it was about their test grades lol

    • @icedrassin7265
      @icedrassin7265 Před 2 lety +18

      @@remikarim562 I was ten and playing it at the time so no excuses for me

    • @Nefusk4n
      @Nefusk4n Před 2 lety +154

      Oh I thought it was talking about how the storage for phones is a result of a power of two.

  • @ammocraft
    @ammocraft Před 2 lety +12607

    Wish I’d had this guy as a maths teacher all those years ago. The “why” is so important to assist understanding…..we just got taught the “how”.

    • @darshan7460
      @darshan7460 Před 2 lety +9

      Absolutely crt...!

    • @terabaap1775
      @terabaap1775 Před 2 lety +28

      @brotinger_1 we got taught exactly that in my school

    • @imengaginginclown-to-clown9363
      @imengaginginclown-to-clown9363 Před 2 lety +93

      @brotinger_1 That's not a proof. That's just an argument for why it should be defined this way. You need to give a proper definition of a^x before you can prove properties about it.

    • @rosemaria4337
      @rosemaria4337 Před 2 lety +1

      @brotinger_1 p... P. . Mm mm mm. Mm mm. O all o!o. Mmg, mm mm mm mm mm me mom o miss. O MMO o mm l mm mm mm. momma .p
      Mm
      Mm moo o

    • @ashiumtanwirahmed011
      @ashiumtanwirahmed011 Před 2 lety

      Exactly

  • @peterirvin7121
    @peterirvin7121 Před rokem +15

    I've read Fourier's original book on heat transfer, and he was absolutely motivated to develop the OG fourier series to further study heat transfer.

  • @ethanzimbra6871
    @ethanzimbra6871 Před 2 měsíci +4

    I love how engaged the class is! It really makes learning so much better.

  • @bearkillar6405
    @bearkillar6405 Před 3 lety +4183

    Why isn’t every math teacher like him;(

    • @Iforgothowtodothis
      @Iforgothowtodothis Před 3 lety +19

      My teacher isn't like this but she is amazing

    • @sleepcrown1
      @sleepcrown1 Před 3 lety +84

      If all teachers were like this one, people still complain.

    • @melchior6427
      @melchior6427 Před 3 lety +13

      My teacher is exactly like this, but much older and speaks Dutch

    • @_Megasthenes_
      @_Megasthenes_ Před 3 lety +11

      You have to be good when you're uploading it on CZcams Lmao

    • @bhuvigupta7391
      @bhuvigupta7391 Před 3 lety +8

      bcz if every math teacher would be like him then no would have interest in his channel
      but seriously he is a great teacher

  • @maxs713
    @maxs713 Před 4 lety +5846

    Albert Einstein - "If you can't explain it simply, you don't understand it well enough."

    • @9nikolai
      @9nikolai Před 4 lety +341

      Or you don't have the vocabulary

    • @efe_fx
      @efe_fx Před 4 lety +53

      Max S wasn't it Feynman?

    • @FFeras
      @FFeras Před 4 lety +542

      “You can make-up any quote on the internet using this format” -Abraham Lincoln

    • @saptarshimitra1444
      @saptarshimitra1444 Před 4 lety +19

      @@FFeras and he used the reverse format, name at beginning and quote after that

    • @K11S03C1996
      @K11S03C1996 Před 4 lety +30

      It is said that Einstein wasn't a good teacher.

  • @srini9653
    @srini9653 Před 9 měsíci +8

    For last 50 years, I'm one of those who accepted 0! is 1 *but* I now know how! I should try few other various based on those patterns. Nice one Mr.Woo. Thank you!

  • @unnesseth8325
    @unnesseth8325 Před 7 měsíci +19

    Since I see so many other people telling personal stories, I'll add mine to the pot.
    Eddie reminds me of my current AP Calculus teacher, whom also taught my Precalculus class last year. Now, up until Precalculus, I didn't really care too much about math. I was always pretty good at math, but it wasn't something I really thought much of. It was just another subject in school to me. This mindset changed when I took his class. This Precalculus class (which I took at the same time as my school's Algebra 2 class) scratched an itch that I didn't know I had in my brain. Not only were we learning things as well as why and how they work (which was a first for me), but my teacher also knew where the concepts we were learning got applied. Whenever I'd ask him where the subject we were learning was used, he would say something like "Oh, this stuff is used to calculate the shape of Formula 1 cars". In just that one year, I went from being indifferent to math to actually liking it quite a bit. Fast forward to now and I am completely in love with math. Although calc can be hard, there's just something about that is so... satisfying. And my teacher has kept his trend of giving examples of where things are applied whenever asked.
    This comment is to you, Mr. Kramer. Thank you so very much for igniting a passion that I didn't know I had

  • @absolutegamert2889
    @absolutegamert2889 Před 4 lety +2011

    *I think I gained brain cells while watching this.*

  • @datgamerian
    @datgamerian Před 4 lety +3876

    This man actually makes me want to have math class. Mad respect.

    • @ryanjung4416
      @ryanjung4416 Před 4 lety +33

      With him at least

    • @Azakadune
      @Azakadune Před 4 lety +7

      datgamerian yea, I have had previous few teachers as engaging as this. It’s just Plowing through lesson after lesson for me...

    • @gaygoddessnamedmadoka2252
      @gaygoddessnamedmadoka2252 Před 4 lety +5

      i hope so i have that kind od teacher in math class simply the best

    • @dearthofdoohickeys4703
      @dearthofdoohickeys4703 Před 4 lety +9

      I was fortunate enough to have a math/science teacher like this. A good teacher really makes all the difference.

    • @vice-108
      @vice-108 Před 4 lety +2

      This feeling apply when he teaches when you solves it yourself you got frustrated.

  • @theEx0du5
    @theEx0du5 Před 2 měsíci +2

    I do appreciate the exponent view going backwards, which was one of the ways I introduced extended exponents in my class. Doing that for factorials was something I haven't seen explicitly spelled out before. Also great was the teachers clear love for the meaning and consistency properties of math - the "it just works". This was a very nice presentation. I do wish the more general point was also presented - that empty products are always 1, just like empty sums are always 0 - and the why for that given, but obviously I have no idea what else he presented to his students after this 6 minute fragment. I just like to show kids how you can break products like Pi(0

  • @FA-dz8ls
    @FA-dz8ls Před 9 měsíci +2

    The first full science-related video I watched after graduating form an engineering degree 3 years ago. Thanks

  • @soon4476
    @soon4476 Před 5 lety +4932

    Me: why is 0!=1 ?
    My teacher: just accept it and don't think about it.

    • @donskiver
      @donskiver Před 4 lety +97

      What about the reality where Hitler cured cancer? The answer is don't think about it.

    • @mohammedkrombi4593
      @mohammedkrombi4593 Před 4 lety +96

      Its a definition , this vid is not proof

    • @neilhassan9176
      @neilhassan9176 Před 4 lety

      same here

    • @Nico-np7wu
      @Nico-np7wu Před 4 lety +38

      It's called an axiom this is something admit without having to prove it

    • @hamzaolalekan3057
      @hamzaolalekan3057 Před 4 lety

      Lol

  • @ywlmni
    @ywlmni Před 3 lety +3180

    I watched “Proof 1 = 2.” And now I am getting recommended math

  • @kylebutler1101
    @kylebutler1101 Před 11 měsíci +3

    I've never ever found maths entertaining. This guy is amazing. 18M views. Well deserved. Holy shit. Dude just opened up my eyes. 10!/10!

  • @eduardoligeiro2817
    @eduardoligeiro2817 Před 10 měsíci +1

    Simply awesome , Eddie. Most of the problems are solved not with hard math, but with an out-of-the box approach ... simply coming backwards, as you showed. Cool !

  • @saltyjager8725
    @saltyjager8725 Před 2 lety +4387

    Someone explained to me that the reason 0 factorial equals to one is that the idea behind factorial is how many times can a group of data be arranged in different orders. There is only one way to arrange a group of data that has 0 data in it

    • @Krab17
      @Krab17 Před 2 lety +288

      That makes a lot more sense for the concept. If you can have nothing in 5 boxes (0•5). Then those boxes are also organized the same.

    • @allorfh2495
      @allorfh2495 Před 2 lety +55

      the problem is: you cant arrange something that doesnt exist. for example what pumpkin did was not arrange nothing in the one and only but he arranged 5 identical boxes. thats an entirely different thing.

    • @yuewingman456
      @yuewingman456 Před 2 lety +325

      @@allorfh2495 it's a thing of probability. Being unable to arrange it counts as a possible outcome, so it's 1.

    • @yuewingman456
      @yuewingman456 Před 2 lety +196

      @@allorfh2495 the more mathematical explaination is to rearrange the definition formula for factorial.
      n! = n x (n-1) x (n-2) x (n-3)... x 3 x 2 x 1
      = n x (n-1)!
      So when n=1,
      1! = 1 x (1-1)!
      1 = 1 x 0!
      We know 1! Equals to 1, so by algebra, the unknown number 0! = 1

    • @GOATinPIC
      @GOATinPIC Před 2 lety +1

      @@yuewingman456 but isnt factorial outcome a value (of any number) instead of probability?

  • @eduardobernardes4889
    @eduardobernardes4889 Před 3 lety +4793

    This guy is so smart he may explain youtube's algorithm that got us here

  • @johnnyboy2215
    @johnnyboy2215 Před 10 měsíci +1

    I really respect teachers that love and breath their work, and actually motivate and create enthusiasm in students.
    Makes learning look funny and more accessible

  • @dekumutant
    @dekumutant Před 11 měsíci +2

    You're an Australian Icon. These lessons are fantastic.

  • @bbccrawling6831
    @bbccrawling6831 Před 4 lety +5230

    The most mysterious things in the Universe*
    1- Black-holes
    2- Bermuda triangle
    3- CZcams algorithm

    • @misinformationspreader7092
      @misinformationspreader7092 Před 4 lety +8

      Rain Flop but people have made black holes on earth

    • @swift3602
      @swift3602 Před 4 lety

      BBC Crawling *universe

    • @swift3602
      @swift3602 Před 4 lety +2

      Dominator Death87 but there are none currently existing

    • @bbccrawling6831
      @bbccrawling6831 Před 4 lety +3

      @Rain Flop You didn't have to comment just enjoy the joke :L

    • @koumei1709
      @koumei1709 Před 4 lety +4

      @Rain Flop he said world.not earth. World is bigger than our universe

  • @Marshma808
    @Marshma808 Před 5 lety +3027

    this is the most engaged I've seen a math class in my whole life. lmao.

  • @Rah11Sin
    @Rah11Sin Před 8 měsíci +3

    I dropped out of Engineering in my last year and chose Real Estate as a profession, because I sucked at Maths, especially Fourier stuffs and Intergrations. I would never understand them.
    But now after 10 years, as im reaching 30s.....Im watching many Maths and Physics videos on CZcams and Im understanding everything.
    I just wish I had teachers like him!

  • @michaelchef
    @michaelchef Před 2 měsíci

    Remember seeing this in my engineering statistics course. This was a great refresher

  • @sreeharidamodaran82
    @sreeharidamodaran82 Před 4 lety +3647

    "Maths can be used to do stuff and that's nice..."
    -This Guy, possibly the coolest math teacher on earth

  • @rudra4376
    @rudra4376 Před 4 lety +2225

    “4 factorial ?”
    someone in the background : eighttt

    • @joannot6706
      @joannot6706 Před 4 lety +60

      I would have said that

    • @qaswara9755
      @qaswara9755 Před 4 lety +2

      @@joannot6706 Same lmao

    • @jagadishkadraka8644
      @jagadishkadraka8644 Před 4 lety +1

      Backbencher said that

    • @INTEL965GAMES
      @INTEL965GAMES Před 4 lety

      LMAO.........

    • @Shawn-yo4oc
      @Shawn-yo4oc Před 4 lety +1

      Bruh seriously! Makes me wonder what kinda class hes teaching. Like if you already have "3! = 6" then just multiply the product of that by 4.. didnt e en hear the right answer called out 😂

  • @marloeleven
    @marloeleven Před rokem

    this is what I missed in school, I should've studied harder back then. I can see the enthusiasm explaining the logic of how certain ideas gets formulated. thanks for the video

  • @kulman4295
    @kulman4295 Před 11 měsíci +1

    that was a fun riddle, well presented, it is all about patterns. working with programming consistency and patterns are things you will encounter all the time, but also in other forms than maths

  • @kvekka9300
    @kvekka9300 Před 4 lety +2794

    This turned out to be way cooler than I had imagined.

    • @vahidmoosavian6313
      @vahidmoosavian6313 Před 4 lety +23

      His class usually does

    • @Neyobe
      @Neyobe Před 3 lety +3

      Same

    • @gabrielpiovesana1342
      @gabrielpiovesana1342 Před 3 lety +2

      Hey man, Can u help me? I'm trying to learn english and i can't find a good description about the phrasal verb "Turn out", can u tell me what this mean?

    • @Neyobe
      @Neyobe Před 3 lety +3

      Gabriela Piovesana
      It’s a little hard to explain but it’s like a way to say something “in the end” like, I thought the roller coaster was scary but it TURNED OUT to be really fun”.

    • @gabrielpiovesana1342
      @gabrielpiovesana1342 Před 3 lety +1

      @@Neyobe I get the picture, thanks man, can u help me in just more one thing? I'm trying to find a partner to learn english, by playing some games or just talking. Do you know some site that help me to find someone?

  • @sjt4311
    @sjt4311 Před 2 lety +5381

    1) I never stopped to think about why n^0=1, I just accepted it. And the way he explained it was super interesting
    2) this guy seems like a really cool professor and I would totally love to take his class

    • @_psychopath_5623
      @_psychopath_5623 Před 2 lety +41

      @brotinger_1 wow. Thats cool as well

    • @adamjohari
      @adamjohari Před 2 lety +133

      @brotinger_1 this is the correct proof in math class. But I don't think normal students would grasp this better.

    • @arzaseb
      @arzaseb Před 2 lety +6

      @brotinger_1 but can you stop spamming doe

    • @Yeetntx
      @Yeetntx Před 2 lety +13

      @@arzaseb ???

    • @markkwan4195
      @markkwan4195 Před 2 lety

      i rmb my teacher gave me another explanation which is also very make sense, but now i get to know another interesting explanation haha

  • @jonathanwalsh5888
    @jonathanwalsh5888 Před 9 měsíci

    I watched this during high school and now I'm studying engineering. Thank you so much Eddie!!!!

  • @BrainiacQue
    @BrainiacQue Před 2 měsíci

    Congratulations, Mr. Woo. You've earned a subscriber out of me. I have no idea why CZcams suggested this video to me--I love Math--but I am glad it did.

  • @anathadenver6027
    @anathadenver6027 Před rokem +5253

    I find it wholesome that he lets his students breathe, like how a comedian stops talking while the audience is laughing. Some teachers hate those micro feedbacks, such as laughing and murmuring discussions. Nevertheless, both show respect as the students get silent when the teacher starts talking.

    • @CJ-mb3td
      @CJ-mb3td Před rokem +73

      Most of my classes were like this at the end and these ones were the best. You just like being there and sometimes tease the teacher while still learning.

    • @trumtrum5136
      @trumtrum5136 Před rokem +8

      Ur depressed

    • @yorkzie7593
      @yorkzie7593 Před rokem +8

      Basically an educational standup

    • @workshopwiz
      @workshopwiz Před rokem

      @Repent and believe in Jesus Christ shut up

    • @CooManTunes
      @CooManTunes Před rokem +1

      I'M SMART BECAUSE I USE CZcams. I'M GOING TO RAISE MY KIDS TO NEVER GO TO SCHOOL. EVERYTHING CAN BE LEARNED ON CZcams.

  • @shachardahan1081
    @shachardahan1081 Před 5 lety +3549

    2 cubed
    someone in the background: 6

    • @mateusmoreiracardoso7896
      @mateusmoreiracardoso7896 Před 4 lety +69

      I was looking for this comment 😁😁😁

    • @ansh6370
      @ansh6370 Před 4 lety +77

      I won't blame him, powers are hard to calculate under 1 or 2 seconds unless you memorize them perfectly. He probably made a mistake judging by such a short time he had.

    • @andreidumitrescu9389
      @andreidumitrescu9389 Před 4 lety +259

      @@ansh6370 dude we are talking about 2 cubed 😂😂😂

    • @stereolifestyle2637
      @stereolifestyle2637 Před 4 lety +119

      someone imagined this "2×3" instead of this "2^3" in his mind
      quite normal mistake when brain isnt fully active and have to respond quickly (like rapid fire round coz both involved multiplication and same numbers
      edit: also 2×3 is simple than 2^3 and our brain have fundamental nature to choose easy way requires less effort..

    • @harshjain3122
      @harshjain3122 Před 4 lety

      @@ansh6370 lol😂

  • @user-ld2dc4vk5w
    @user-ld2dc4vk5w Před rokem

    Your explanation has solved my doubts for years, thanks!

  • @VRDaD
    @VRDaD Před 10 měsíci

    This was the most entertaining math lesson I ever listened to in my entire life.

  • @Just-View
    @Just-View Před 4 lety +998

    2:50
    Math teacher: 1/1 = 1
    Everyone in the class: (Loses their mind)

  • @mrrandom1265
    @mrrandom1265 Před 4 lety +3508

    This teacher: *explains why a0 = 1*
    My teacher: "It's 1, that's the way it is, just remember it"

    • @duonggiahan1063
      @duonggiahan1063 Před 4 lety +44

      I love when they can explain a origin of things, and hate it when they tell me to remember the result because it should like that, it is superfluous to explain for a thing*blame blame blame*. I search for some of the explanations, feel I can remember better for my knowledge

    • @rajatpratap9762
      @rajatpratap9762 Před 4 lety +55

      and my teacher replied because a^(x-y)=a^x/a^y...now let x=y then a^(y-y)=a^y/a^y then a^0=1

    • @karansinghbhati1997
      @karansinghbhati1997 Před 4 lety +2

      🤣🤣

    • @muhammednibeen2268
      @muhammednibeen2268 Před 4 lety +6

      Indian teacher for sure

    • @rikudosennin
      @rikudosennin Před 4 lety +21

      @@muhammednibeen2268 Indian teachers teach the way Rajat Pratap has said. a^0= a^(t-t) = a^t/a^t= 1.

  • @aaminajamalkhan8993
    @aaminajamalkhan8993 Před 5 měsíci

    I saw your video a few years prior and then my instructor asked this question in class and it was something no one had ever studied before but thanks to this video I knew the answer!

  • @SagarRavrane
    @SagarRavrane Před 11 měsíci +19

    We definitely need more teachers like these to ensure that humanity remains curious! 😇

  • @cuzimelliotcie9537
    @cuzimelliotcie9537 Před 4 lety +1751

    he didn't know that there is 6.5 million students in his class

  • @shelbywood4185
    @shelbywood4185 Před rokem +6092

    As a teacher, that moment when the students went “Oh!” was so satisfying and empowering. He is clearly a great teacher, teaches with passion and clarity while also being flexible and having a sense of humor

    • @CooManTunes
      @CooManTunes Před rokem +13

      I'M SMART BECAUSE I USE CZcams. I'M GOING TO RAISE MY KIDS TO NEVER GO TO SCHOOL. EVERYTHING CAN BE LEARNED ON CZcams.

    • @iron_bucket
      @iron_bucket Před rokem +117

      @@CooManTunes ok

    • @Ok-qq3bp
      @Ok-qq3bp Před rokem +68

      Jesus, my guy coo is having so some sort of revolution

    • @guysumpthin2974
      @guysumpthin2974 Před rokem +3

      Zero of a certain quantity is equal to zero. pretending wheels are square doesn’t make them square , unless they’re low profile and you turn them 90degrees then look at them from far away (and pretend) .

    • @kalen1702
      @kalen1702 Před rokem +1

      @@CooManTunes cool

  • @crimcyy
    @crimcyy Před 4 měsíci +1

    I am clearly unfortunate enough to not have met or got a mathematics teacher like him. Those students are indeed very lucky!

  • @OldScratch81
    @OldScratch81 Před rokem +2

    9 years ago ,I wouldn’t have appreciated this as much as i do now👍

  • @ahmadsamadzai8255
    @ahmadsamadzai8255 Před rokem +3544

    I was a below average student with no interest in math or education until I met someone like this professor in 10th grade teaching geometry. He changed my world and everything. From 10th grade and beyond I was a straight A student graduating with high honors. Some 30 years later I still think of him and how amazing of a teacher he was. There are teachers then teachers like these. You are a gift to many sir.

    • @Hammerage1
      @Hammerage1 Před rokem +69

      These are the stories you love to hear. Thank you for sharing.

    • @wallie963
      @wallie963 Před rokem +21

      Oh my god, I have a teacher in 10th grade Geometry too and he really sparked that math passion in me again.

    • @rajeshkumarKona-pt2zk
      @rajeshkumarKona-pt2zk Před rokem +6

      Some thirty years later
      What do you mean by this???
      What his present age is??

    • @hombojimbo
      @hombojimbo Před rokem +16

      @@rajeshkumarKona-pt2zk They mean that they still remember how good their math professor was, even though it's been 30 years.

    • @cesuntbanii
      @cesuntbanii Před rokem +2

      ..... a good teacher changes destinies...

  • @bennovotny4813
    @bennovotny4813 Před 2 lety +4134

    it must be so satisfying for a teacher to hear “WOOOOAAAAAAHHH” all at once from the class!😂

    • @memoirelointaine7773
      @memoirelointaine7773 Před 2 lety +18

      Ikr

    • @juliangzhuo4714
      @juliangzhuo4714 Před 2 lety +7

      Big AGREE with you

    • @naelovesbangtan0405
      @naelovesbangtan0405 Před rokem +2

      ikr

    • @jcnbw01
      @jcnbw01 Před rokem +44

      As an educator for the past 20 years, yes, there is a sort of satisfaction with getting this sort of reaction from a class. It demonstrates engagement; But what's infinitely more satisfying is (assuming you have their complete attention and all in the same page) when you get them to truly contemplate a completely new or groundbreaking idea; something that challenges their existing notions and understanding. Even better, If you get them to start asking additional questions to process that idea, and they start asking those questions not just to you as the teacher or facilitator, but to each other in class, and then it ricochets back and forth between you and the rest of the class, those are truly the moments that make teaching satisfying, IMHO.

    • @diegesis6791
      @diegesis6791 Před rokem +4

      ​@@jcnbw01 could you please tell us about a time this happened if you can recall (edit: just out of curiosity, i've never been in a class like this and I kinda want to know more)

  • @lilacleveland4452
    @lilacleveland4452 Před 3 měsíci

    i figured out the powers thing by myself a few weeks ago and was a little skeptical that it was the actual reason, so seeing someone else teach is a huge relief. didnt think to apply it to factorials tho

  • @edim108
    @edim108 Před 10 měsíci

    Nice one CZcams. Thanks for recommending this NOW and not these 9 years ago when I was in school. Very cool...

  • @patana256
    @patana256 Před 4 lety +3907

    Fun Fact: You didn't search for this.

  • @mathiaskolding3241
    @mathiaskolding3241 Před 4 lety +1639

    My professor explained it in interestingly to me, he said, “the proof comes from trying to figure out how many ways there are to distribute nothing, and it turns out there’s one: you can only give nothing to no one”

    • @zeki1
      @zeki1 Před 4 lety +119

      That's an interesting approach and that is what makes maths fascinating! Because there's a lot of ways to come to the same conclusion

    • @kushalbhalerao1463
      @kushalbhalerao1463 Před 4 lety +16

      This way seems to be through PnC

    • @ShaileshKumar-od6nl
      @ShaileshKumar-od6nl Před 4 lety +17

      Exactly same thing was explained to me by my teacher.... And that is the best logical...

    • @internois8181
      @internois8181 Před 4 lety +42

      @S GALAXY GAMER No,factorials are used in combinations . 3! Means how many ways are there to distribute 3 things to 3 people for ex,and thay is 6.U have 6 combinations on how u can distribute 3 things to 3 people.1! Is only 1 way because u have only one thing and one person.0! U have nothing and no one to give it too,and thats still called a way.U give nothing to no one which makes sense kinda

    • @deepakchermakani7542
      @deepakchermakani7542 Před 4 lety +18

      very well explained, thanks. So there is only 1 way of arranging 0 marbles in a line. So 0!=1. Beautiful explanation, thanks.

  • @dugannash9109
    @dugannash9109 Před 4 měsíci

    this guy's passion for the subject is infectious. Seems like a great teacher.

  • @asdf-cf3rb
    @asdf-cf3rb Před měsícem +5

    I'm commenting here so that when anyone after years like my this comment, then I will get remember these days which will not come back in my life again. 😊😊

  • @gordonramsay5356
    @gordonramsay5356 Před 3 lety +4793

    Love how everyone's complimenting him and wishes he was their maths teacher when he still makes normal videos (lessons) and hardly gets any views

    • @egegoogog1608
      @egegoogog1608 Před 3 lety +190

      Yeah not every math lesson can be like this or you learn nothing

    • @dank_lord
      @dank_lord Před 3 lety +90

      Thousands of views counts "barely" to you?0

    • @gordonramsay5356
      @gordonramsay5356 Před 3 lety +139

      @@dank_lord no but when you compare it to the amount of views that this video accumulated, its quite small.

    • @jamesedward9306
      @jamesedward9306 Před 3 lety +177

      @@gordonramsay5356 It's because people are attracted to the unusual or unintuitive. The weird, etc. Also, they want a quick fix for everything they're interested in, and videos can be highly entertaining to people if they know they'll be no quiz or test on the material. Note that Eddie's seeing the big picture calc video and his quick visual proof for the area of a circle both have over a million views. Learning basic mathematical techniques to solve problems takes work and dedicated practice time something most internet dwellers are definitely not interested in. Hence fewer views there.

    • @unclegardener
      @unclegardener Před 2 lety +3

      I watch them even though they’re like what, 5 years advanced

  • @lamedev1342
    @lamedev1342 Před 3 lety +2947

    Me as a programmer reading this as "why is 0 not equal to 1"

  • @lilliansnyder9113
    @lilliansnyder9113 Před 7 měsíci

    i love math teachers that love to teach. it makes info so much easier to absorb

  • @shauryamaurya07
    @shauryamaurya07 Před 9 měsíci +3

    The students are probably the age of teacher now .

  • @CtrlTheGod
    @CtrlTheGod Před 4 lety +3842

    CZcams: *”It’s okay, they’ll watch anything during quarantine”*

  • @DE_3D
    @DE_3D Před 3 lety +2240

    I’m on Christmas break I chose to watch this video willingly

    • @erikhjortsater5461
      @erikhjortsater5461 Před 3 lety +10

      Same :) Albeit I’m stuck in bed due to a surgery, but I could’ve watched something else.

    • @titouande800
      @titouande800 Před 3 lety +7

      I wish you a good recovery friend 🙂

    • @Kami-my1kp
      @Kami-my1kp Před 3 lety

      Me too. It sucks more because this actually taught me some math I was doing in class before break

    • @yknight25
      @yknight25 Před 3 lety

      This isnt even the first time ive watched this and i chose it for fun

    • @ajseker
      @ajseker Před 3 lety

      @@erikhjortsater5461 feel better mate

  • @SuperMaanas
    @SuperMaanas Před 3 měsíci +1

    10 years later and I'm learning something from this man.

  • @Anon54387
    @Anon54387 Před rokem

    That square wave you drew. Those sharp edges lead to a lot of harmonics. Practically, this means that a three phase system needs a larger neutral line than a three phase system that is just a sine wave (ie no harmonics).

  • @ThomasSaar
    @ThomasSaar Před 3 lety +2991

    Took me a moment, but when he mentioned that people who have spent time on their phones recently would've seen those numbers, he was talking about 2048. Immediately brought me back to high school when everyone was playing that game in 2014.

  • @vladimirjosh6575
    @vladimirjosh6575 Před 5 lety +2513

    Admitting *_He's tons better than my maths teacher!_*

    • @scusachannel1682
      @scusachannel1682 Před 5 lety +20

      My maths teachers have all been awful in the past 3 years. As a result, everyone in my class hates maths.

    • @MrE_
      @MrE_ Před 5 lety +11

      Right?! Here I am with a guy who flips through curriculum-made PowerPoints for an hour and a half, wishing I could have a good teacher like this guy

    • @rohanbhuckory1297
      @rohanbhuckory1297 Před 5 lety +2

      Rip same

    • @unogal5906
      @unogal5906 Před 5 lety +2

      You don't actually need a good math teacher to do well in math.

    • @mikeries8549
      @mikeries8549 Před 5 lety +1

      In college you get to choose which professors class you sign up for.
      If you're smart you figure out which ones are bad and avoid them. Once you're taking 300 level classes TRY TO FIND ONE THAT USES ENGLISH AS A FIRST LANGUAGE.
      try.

  • @khushibhushan2007
    @khushibhushan2007 Před 9 měsíci +2

    I don't know why but whatever I am currently studying (not on the phone) at tuition, the videos related to those topics are being recommended to me by the CZcams out of nowhere. And 0! thing was revolving in my head since many days and again I got a recommended video related to it. I think CZcams has become a mind reader. 😂😂😂

  • @L333_
    @L333_ Před měsícem

    Woa I just realized that I'm actually watching this video on the same date just 10 years later ?! That's crazy but honestly really nice pls never stop uploading

  • @NithinJune
    @NithinJune Před 4 lety +1696

    He knows hes succeeded when everyone shouts ohhhh.

    • @Neyobe
      @Neyobe Před 3 lety +49

      Nithin Danday that must be a golden moment when you are a teacher

    • @YoYo-nt7yf
      @YoYo-nt7yf Před 3 lety +7

      I'm also with this group.

    • @miguelpanta
      @miguelpanta Před 3 lety +4

      they trolling him

    • @jazzabighits4473
      @jazzabighits4473 Před 3 lety +1

      I disagree entirely. 1! is 1, and you're saying 0! is also 1. Basically 1!=0! So you can cancel the ! from both sides and you're saying 1=0. 1 does not equal 0.

    • @m_uz1244
      @m_uz1244 Před 3 lety +4

      @@jazzabighits4473 No, you can't just cancel ! from both sides. Factorial is a complex function and ! is just shorthand for it, it doesn't work that way.

  • @agjelo3178
    @agjelo3178 Před 4 lety +1050

    I think all people want a teacher like him

  • @user-me9hk7il5s
    @user-me9hk7il5s Před 10 měsíci +2

    I can't believe I'm watching this at 4am in bed wanting to sleep, and I really enjoyed it!.

  • @cheese90210
    @cheese90210 Před 9 měsíci +9

    As someone who has an engineering masters, I've always known what the values of these were and accepted it as fact without ever thinking about it. I've done the highest level of maths through secondary school and engineering maths through university. This is the first time I've seen this explained and I've had some amazing teachers in that time.
    Good job!

  • @HatakeHyei
    @HatakeHyei Před 4 lety +1287

    Nothing better than finding a professional who love/care for his job.
    I HATE history, because all teachers only cares about dates and names. Nothing else.
    I once had a substitute historian teacher, for like 3 months, and she would talk about the time period like she was a time traveler, explaining how the society worked back then, politics, religion, etc.
    It was the best.
    So after that i realized there's no bad disciplines, only bad teachers.
    The reason for the latter varies, as we all know...

    • @pablosamjose
      @pablosamjose Před 4 lety +68

      It’s not always up to the teachers though, you have to remember they are part of a much larger system. There are certain standards and checkpoints that have to be met in order to satisfy the state or district. This results in the bullet point learning you hate. Your substitute isn’t beholden to this because they’re just a placeholder, so they have more freedom to teach. It’s a sad state of affairs but one more complicated than teachers being shit.

    • @Abc-cd3fd
      @Abc-cd3fd Před 4 lety +4

      Exactly! I agree with you, especially with the last para

    • @yohithere6306
      @yohithere6306 Před 4 lety +17

      One of my history teachers didn't care much about dates and names. His focus was mostly on the "why". His class turned out to be one of the most challenging classes in my EEE degree.

    • @junkonakamura3441
      @junkonakamura3441 Před 4 lety +4

      @@yohithere6306 EEE=Eelectrical & electronics engineering? If it is, then Wow!!! It is amazing for EEE undergraduate students in your country to study history as a compulsory subject.

    • @LvLdGhost
      @LvLdGhost Před 4 lety +14

      I had a geography teacher who had traveled the world many times over. All his slides for notes he would use his own photos he had taken and give actual first hand knowledge about the place he had been. It was honestly so cool.

  • @tompoulter6875
    @tompoulter6875 Před 4 lety +1897

    Let's be honest, no one searched for this
    But we're all happy it's in our recommended

    • @harshvadhanas1603
      @harshvadhanas1603 Před 4 lety +4

      So true

    • @unknownera241
      @unknownera241 Před 4 lety +12

      I searched

    • @kurtshaw229
      @kurtshaw229 Před 4 lety

      I searched cause i had factorials explained as the amount of ways you can arrange something and i was wondering how can you even arrange 0 of something in 1 way? Wouldn’t it be that theres 0 ways to arrange 0 things?

    • @wakkle
      @wakkle Před 4 lety +1

      I looked up 0! On accident

    • @max-mk1pl
      @max-mk1pl Před 4 lety

      Well I did

  • @apointyrodent
    @apointyrodent Před 2 měsíci

    This guy is a very gifted teacher, I wish we could all be so lucky to get an instructor like this.

  • @iribaaa2643
    @iribaaa2643 Před 8 měsíci +1

    I got my answer finally after about maybe 8 years... I was expecting something more complicated but it was kinda simple! Also I think I finally understood the application of using Fourier series. Thank you so much

  • @LiteraryOG
    @LiteraryOG Před 5 lety +1714

    If i had you as my maths teacher my doggy wouldn’t have eaten my homework that often.

    • @ajaydholpuriya4282
      @ajaydholpuriya4282 Před 5 lety +5

      Lol

    • @john-paulmathieu7195
      @john-paulmathieu7195 Před 5 lety +23

      I used to say the same thing, and I ended up becoming a math teacher. I'm very similar to him by showing why things are, energetic, and breaking things down to simple levels. In my classes I have students that have gotten D's and F's in math for the last few years saying they've never understood math so much and about half the class say math has never come so easy. Despite that, there are also many kids that prefer to just zone out, not take notes, not attempt any work, prefer to try get on their phones, or try to just do anything other than math. All these kids say it's super hard... Anyway, my point is no matter how great the math teacher is, there are always students that will ignore instruction.

    • @sebastianblome7138
      @sebastianblome7138 Před 5 lety +24

      Because he would have eaten the dog

    • @fsyang0589
      @fsyang0589 Před 5 lety +3

      Sebbelito 69 hah

    • @GGamerable
      @GGamerable Před 5 lety +1

      @@john-paulmathieu7195 how self reflected you are!

  • @sin21ful
    @sin21ful Před 5 lety +1604

    I went through all of high school without ever being taught what a “factorial” was.
    I’m not joking.

    • @mikeries8549
      @mikeries8549 Před 5 lety +14

      Hahaha...I get the joke anyway.
      Ahahaha.
      Funny. Got more?

    • @kevinakbar1681
      @kevinakbar1681 Před 5 lety +31

      Well maybe you wore a headphones or somethin?
      How did you graduate m8

    • @sin21ful
      @sin21ful Před 5 lety +73

      kevin akbar No, it wasn’t in the curriculum. I graduated perfectly fine.

    • @mryup6100
      @mryup6100 Před 5 lety +4

      @@sin21ful Same, It seems easy though.

    • @Erik20766
      @Erik20766 Před 5 lety +16

      MR YUP all math up to and including some university level math is easy if you learn it in the right order

  •  Před měsícem

    almost 10 years from this masterpiece... respect

  • @mediaguardian
    @mediaguardian Před 6 měsíci +1

    For exponents of like bases you simply subtract values when dividing. so a^10/a^3 = a^7, but a^10/a^10 = 1 for obvious reasons. Therefore, a^(10-10) = a^0 must also equal 1.

  • @anthonylabarbera3656
    @anthonylabarbera3656 Před 3 lety +2895

    its kinda crazy because as a math student, you never are taught WHY things are the way they are, teachers really just tell us to accept it because that is the way math works. Even i was kinda in awe seeing this because i was never taught this in math.
    UPDATE: Im currently taking calculus 2 in college, and this topic came up during class since we were covering root/ratio test, which deals with factorials. Even my calc professor didn't know exactly why 0! is 1 and I explained to her from this video!

    • @FDE-fw1hd
      @FDE-fw1hd Před 3 lety +71

      Guess I'm lucky. I always get the explanation or am asked why.

    • @mig2410
      @mig2410 Před 3 lety +47

      actually your teacher's explanation is kinda same with this guy. you still dont have a sensible reason why 2⁰=1. you know its 1 cuz it has to be 1 for the rules on the other numbers. But you cant prove why 2⁰=1 is. Its exactly because thats the way math works. we better accept it as 1. you to better understand, let me give an example. 0⁰ is sometimes undefined sometimes it equals 1. we define it as 1 cuz it makes the things easier. we sometimes accept it as undefine cuz if we define it we make mistakes. In algebra its accepted as 1 and in analysis accepted as undefined. so its about us. not exactly cuz of the rule pattern.

    • @Cetra29
      @Cetra29 Před 3 lety +28

      Then your professor is shit because mine gave proof whenever there was one. And he also said when something was axiomatic.

    • @JammyTom
      @JammyTom Před 3 lety +3

      @@FDE-fw1hd you're probably gifted

    • @besikothabolbina5447
      @besikothabolbina5447 Před 3 lety +18

      Ya education isn't imagination anymore its memorization now. Its not our fault though our system did this. See our ancestors did all the imagination and now we have just to memorize their works. Life is easy but boring at the same time.

  • @AlexanderWebster_
    @AlexanderWebster_ Před 2 lety +1703

    Lol I love how engineers and mathematicians see the world so differently. Mathmeticians appreciate the intricacies of numbers for what they are and all of their complexity. Engineers appreciate numbers for what they can do for them despite their complexity.

    • @wafikiri_
      @wafikiri_ Před 2 lety +34

      Mathematics, as a discipline, is one of the various conceptual worlds. It resides in the minds of people. Language enables sharing and discussing mathematics, so it becomes ever refined. But the primary source of mathematical ideas is the physical universe, for its natural laws are constrained by mathematics, not the discipline but the underlying pattern or subset of the whole of idealized relationships, known or unknown.
      An example of a primary source of mathematics: Natural numbers relate to collections of individual objects, they are the collections' cardinals. An example of a non-physical application of mathematics: five mathematical theorems, three dreams, eight contradictions, four myths.
      Engineers constantly deal with the physical world, it's their job. For them, the relationships between mathematics and its primary source, the real world, is fundamental.
      Mathematicians constantly deal with the discipline of mathematics, of course. They try to squeeze the most of what they best know, and so, mathematics expands.
      Philosophers also appreciate mathematics. Bertrand Russell's paradox of "the sets that do not contain themselves...." is an example.
      Artists and mathematics? Of course! Tilings are an example. Fractals, another.
      So, who do not love mathematics? Those who heard that mathematics was something hard, ugly and unworthy of trying. Those who prefer sports to thinking. And so on....
      My daughter is 35. I have been teaching her mathematics for a whole year, for she asked me to. She was not too comfortable with what she had been taught at school two decades earlier. She takes free time for mathematics whenever she can, even though she has to work hard most of the day for a living. I am very proud of her.

    • @swimfan752
      @swimfan752 Před 2 lety +17

      Engineer and mathematician aren’t some mutually exclusive grouping. Im both an engineer and a mathematician

    • @licchaavi
      @licchaavi Před 2 lety +4

      @@wafikiri_ wow

    • @thedatatreader
      @thedatatreader Před 2 lety +10

      @@wafikiri_ There is yet another subset of people who hate mathematics, although unintentionally; those who were never taught about the underlying pattern because their teachers were unwilling or unable to explain the context of the lesson and simply told them to copy the formulas.
      I wish I had a teacher like this who could explain how mathematics can be a creative pursuit rather than just rote memorization.

    • @danielgiovanniello7217
      @danielgiovanniello7217 Před 2 lety

      Man, I don't think about it that hard. I just get my daily dose of dopamine from doing well in math.

  • @e.telizondotavernier4232
    @e.telizondotavernier4232 Před 9 měsíci +2

    Ive never heard so much laughter in a math class

  • @JackH-li8xf
    @JackH-li8xf Před 9 měsíci +1

    Love this channel and all he provides. Why does this pattern not continue though into the negatives (-1!, -2!, etc) though like the proof on the right? Seems arbitrary that it didn’t break down going to 0, but does break down after that.

  • @amruthvarsh832
    @amruthvarsh832 Před 4 lety +412

    3:09
    Teacher: this is what makes maths * pause *
    Student : beautiful
    Teacher * continues * interesting to me

  • @pranjalvw2193
    @pranjalvw2193 Před 4 lety +6850

    And my teacher was like
    2 + 2 = 4
    Now you can do it by yourself, a home work for you :- Michael has 4 apples, his train is 7 minutes late, calculate the mass of the sun.

  • @azaleacolburn
    @azaleacolburn Před 10 měsíci +8

    I see a lot of comments talking about how other teachers should be like Woo. I think he’s an amazing teacher. But I also think a lot of people disregarded their teachers in highschool, and now see teachers on the internet like Woo and see how good they are, but are blinded by their teen angst and dislike of highschool, so don’t realize how good their teachers were.

    • @joneeboi9303
      @joneeboi9303 Před 2 měsíci +2

      Yeah, but is wonderful how Mr woo was able to learn such kind of stuff, like did he read some books or what

  • @sa3270
    @sa3270 Před 11 měsíci +2

    Because there is 1 permutation of the empty set.