Dividing by zero?


Comments • 7 064

  • Gigemo 2
    Gigemo 2 7 hours ago

    So, let's consIDEEEEER...

  • Literally just some rock.

    That is exactly why we need a 3rd numeric dimension. :p

  • Ascendity
    Ascendity Day ago

    This guy should run for president

  • Elias Stolt
    Elias Stolt Day ago +1

    In about 8 minutes 30 or something he says *That is how we get to infinity*
    I got bugged since all numbers are finite, and NO finite number multiplied by and FINITE number can get to infinity. No matter how you do it, infinity is something you can't get to, it is like materia X. It is theoretical. Nothing is infnite, but something are REALLY REALLY huge, such as the universe.. Watch Vsauce's video where he talks about *Can we count past infinity* yes, there are smaller infinites than others, and there are omegas.. But you can't reach them with any equation, atleast not if you use FINITE numbers..

  • Samster Hamster
    Samster Hamster Day ago

    Thank you so much Mr Woo, middle school math is the most sucky thing ever and your videos are really informative!

  • No pain No gain
    No pain No gain Day ago

    Keep moving hero

  • Celezon
    Celezon 2 days ago


  • Gunner Canham Pla
    Gunner Canham Pla 2 days ago

    Dividing by zero-the offspring.Temazo

  • ReviewTechUSSR
    ReviewTechUSSR 2 days ago

    maybe 2/0=2*infinity?

    • Christopher Nanista
      Christopher Nanista 11 hours ago

      then it could also be 2*-infinity so that doesn't help to solve the problem

  • ayoub alami
    ayoub alami 2 days ago

    0 = everything, because the universe have started from nothing

  • Chuong D
    Chuong D 2 days ago

    What's zero divided by zero?

  • Momoe monkey
    Momoe monkey 2 days ago

    What happened to infinity going into both negative an positive numbers

  • Ali Faiazi
    Ali Faiazi 3 days ago

    Omg I just got it rightnow. thanx for sharing your useful videos

  • Kalonji Stephens
    Kalonji Stephens 3 days ago

    I wish I couldve talk to this dude, so many theories I wanna discuss but no one to understand it

    • Russel Webb
      Russel Webb 2 days ago

      You are not as smart as you think you are.

  • mahdi noroozi
    mahdi noroozi 3 days ago

    amazing illustration , great job Eddie.

  • Retarded Moose
    Retarded Moose 3 days ago

    If he were to use 2 as another example, the denominator of 2/1 and so on would have to be a 0.2, 0.02, and so on because if the numerator was multiplied by 2 the denominator has to also be multiplied by 2. The statement of 1=2 would never make sense in that explanation.

  • its not that deep
    its not that deep 3 days ago

    Here is how i look at it
    ___ uncountably
    | |

  • Toughen Up, Fluffy
    Toughen Up, Fluffy 4 days ago

    Where n ≠ x, and nx=y, then x=y/n, and n=y/x. But if n=0, then x=y/0; or if x=0, then n=y/0, so y/0=n=x. Undefined, because n ≠ x.

  • Napoléon Bonaparte
    Napoléon Bonaparte 4 days ago

    australian commies 🖕

  • iThunder
    iThunder 4 days ago

    This is a math revolution .

  • William Salame
    William Salame 4 days ago


  • Ninja of the Lemons
    Ninja of the Lemons 4 days ago +1

    This guy watches too much Rick and Morty

  • Mama Crow
    Mama Crow 5 days ago +1

    You know how each number can be positive or negative? well, stay with me here, what if you let 0 be positive or negative. I get that doesn't "really" make sense, but you could say 1/0 = infinity and 1/(-0) = negative infinity. As with 1/0 = 2/0, multiplying both sides by 0 instead of making it 1=2 have it be 0 = 0, since anything multiplied by 0 results in 0. infinity * 0 = 0 and -infinity * 0 = 0. You change some rules up in math, and boom now it makes sense and can be defined. I'll take my million dollars through Visa please.

    Makes me wonder though, what would happen with math if you played around with these rules. What would break?

  • Coded Xtreme
    Coded Xtreme 5 days ago

    Only on our universe.

  • Jake fromStateFarm
    Jake fromStateFarm 5 days ago

    so 1/0 can be ANY number. like 666, but at the same time it wrong...

  • UnityDog Gaming
    UnityDog Gaming 6 days ago

    The number line is a circle.
    With 0 at one point and infinity opposite it. to the right of zero is 1, to the left of zero is -1.
    So, just as 0 is neither negative or positive, infinity is neither negative or positive.

  • Yuxiao Liu
    Yuxiao Liu 6 days ago

    Chuck Norris knows the answer

  • Balázs Börcsök
    Balázs Börcsök 6 days ago

    How do you divine a non integer with the idea that you subtract until it becomes 0?

  • Karthik c b
    Karthik c b 7 days ago

    You said "infinity is an idea" in one video and here you are treating it like a number.

    • Karthik c b
      Karthik c b 5 days ago

      ​+Fen boii It is confusing. I know that we cannot perform basic algebraic operations using infinity, but they say that some infinities are larger than other infinities.
      It is same in the case of tan(90) because sin(90)/cos(90)= 1/0. Therefore we ignorantly/naively assign a value to
      Tan inverse(infinity) = 90 degree or pi/2.

    • Fen boii
      Fen boii 5 days ago

      it is an idea, he is just trying to express what 1/0 is. Obviously you cannot write = infinity as infinity is not a number.
      The proper and accepted definition to equate to infinity is using limits.
      Support a function
      y=1/x exists
      then from calculus, we note that
      as x approaches 0, y approaches infinity or in other words
      lim x->0 1/x = infinity
      here we can treat infinity like a number because we are dealing with limits. Obviously we cannot reach infinity and thus we cannot express it without a limit

  • Varun Kamoji
    Varun Kamoji 7 days ago

    No homo but I wanna bang him

  • Pawan Pratap
    Pawan Pratap 7 days ago

    Multiplication is repeated addition is right but division is not equal to repeated subtraction

  • Prateeth Damodara
    Prateeth Damodara 8 days ago

    1 ÷ 1?
    1 ÷ 0.1?
    The class was happening at 4:20 pm

  • Sam Miles
    Sam Miles 8 days ago

    If i tell u to write down 3 times 5 .. u will do 5plus5plus5 .. so 3×5 is 5plus5plus5 .. he just reverse the logic

  • donplayleon
    donplayleon 8 days ago

    Don’t know if he teaches to 5 year old or they are all autist who Try to understand math

  • Mr. Gamer
    Mr. Gamer 8 days ago

    fake news

  • jose ryan latosa
    jose ryan latosa 10 days ago

    , our teachers already told us that but they never explained why... thank you very much sir, i started to like math

    • Eddie Woo
      Eddie Woo  8 days ago +1

      The *reason* is the most important part! Glad you understand it now, Jose :-)

  • ashu gurtoo
    ashu gurtoo 10 days ago

    Dam he is good ....

  • Magnets & magic
    Magnets & magic 10 days ago

    Obviously he's asian

  • Walking Meme
    Walking Meme 10 days ago

    He is better than my math teacher

  • 林育任
    林育任 10 days ago

    That is why lim(1/x) for x→0 is not converge. You get different answers when x→0- and x→0+.
    Please correct me if I am wrong.

    • Fen boii
      Fen boii 5 days ago

      林育任 yep it does not
      0(-) tends to - infinity and 0(+) to + infinity and it makes sense because then again infinity cannot be approached to one definite value

  • Waeng Kevin
    Waeng Kevin 10 days ago

    Why is grade 2 math being taught to a bunch of people that seems to have a 20 yrs old voice?

  • Cai
    Cai 10 days ago


  • Angelica W
    Angelica W 11 days ago

    Wait is he explaining basic multiplication and division to college students ?

    • Fen boii
      Fen boii 5 days ago

      Angelica W they are school students

  • Ram Kumar Mitra
    Ram Kumar Mitra 11 days ago


  • Elijah Harris
    Elijah Harris 12 days ago

    "The limit does not exist... THE LIMIT DOES NOT EXIST"

    Sorry, I'm a Mean Girls fan

  • Angel Mendez-Rivera
    Angel Mendez-Rivera 12 days ago

    5:22 One cannot conclude 1 = 2 from 1/0 = 2/0, because the condition that must be satisfied in order for such a conclusion to be valid is that the operation of dividing by zero be reversible, the transformation of an injective map. However, this is not the case, so you cannot conclude that 1 = 2 from 1/0 = 2/0 much in the same fashion that you cannot conclude that 2 = -2 from (2)^2 = (-2)^2. This is not a problem with division by zero, this is just a problem with people not understanding how algebra works in the most basic and fundamental sense and not realizing that arithmetic operations cannot simply be assumed to be always reversible.
    5:58 Let me repeat myself: you cannot conclude that 1/0 =/= 2/0 from 1 =/= 2 for the same reason you cannot conclude 0*1 =/= 0*2 from 1 =/= 2 or 2^2 =/= (-2)^2 from -2 =/= 2. Making those inferences ironically breaks mathematics much more than coherently defining 1/0 as some number.
    7:23 That is another fallacy. Limits do not define arithmetic operations. Yes, the limits from directions towards 0 in x of 1/x are differently, but that tells us nothing about 1/0 itself, just like how the fact that the limit of sign(x) as x -> 0 does not exist does not imply that sign(0) is undefined. It is in fact not undefined, but rather, sign(0) = 0. All this means at beast is that 1/x is not continuous at x = 0, it does not mean that 1/0 should be left undefined. Also, this continuity problem can easily be solved by letting (-inf) = (+ inf) as un wheel theory. There is no problem is letting -1/0 = 1/0, especially since we already have that 1/0 = 2/0.
    7:52 It is only undefinable if you restrict your set to the set of real numbers. There is no actual restriction making it undefinable, and wheel theory proves that without the shadow of a doubt remaining to linger.
    9:04 It is not a question of “working out what 1/0 equals to” and failing. It is a question of DEFINING it, which, as I said, has little to do with limits.

  • Fredy Pastory Utd
    Fredy Pastory Utd 12 days ago

    Just think in our country English is not our mother language but we teach mathematics with English language...., is just you speak two language at once. We totally confused

  • Yash Rajput
    Yash Rajput 13 days ago

    Sir you show 2 cannot be equal to 1 so how about if we draw one line and put the mirror at one end of the line then put two bars magnet or whatever of same size on the line so the image form on the mirror is only one isn't it prove 2=1

  • Rajasekhar Samanthula
    Rajasekhar Samanthula 14 days ago


  • Van Nguyen
    Van Nguyen 15 days ago

    Where were you in all my high school math classes? *SAD FACE* Other teacher be like: THIS IS THE LAW, REMEMBER IT OR YOU WILL BE PURNISHED...

  • vicky alves
    vicky alves 15 days ago

    i wish this guy was my teacher

  • Sahithyan Kandathasan
    Sahithyan Kandathasan 16 days ago

    1. 2^0 == 3^0 == 1. SO 2 == 3??.
    2.Let's say 1/0 = x and we should find the value of x now. 1/0 = x, multiplying 0 two side : 1 = x * 0. this cannot be done too..

  • Shivam Kumar
    Shivam Kumar 16 days ago

    One of the best MATH'S teacher I've ever seen...

  • Joey Lynn
    Joey Lynn 16 days ago

    every so often there’s that one teacher who makes you appreciate the subject. just like this guy! reminds me of my Algebra II teacher.

  • Bek'a
    Bek'a 17 days ago


  • jayshankar kumar
    jayshankar kumar 17 days ago

    But 1=2 can be

  • Angel Cayetano
    Angel Cayetano 17 days ago

    2+2 is 4-1 thats 3 QUIK MATHS

  • Muhammad Irfan
    Muhammad Irfan 18 days ago

    Undefined and infinity are completely different things!

  • Carlos Garcia
    Carlos Garcia 18 days ago

    I couldn’t make it past his accent plus he talks way too fast

  • Hassan haider
    Hassan haider 19 days ago

    When he did 1/0 = 2/0 is the same thing as 1 = 2 wouldn’t be a right because if you cross multiple you’ll get 0= 0 which is in fact true. 1/0 = 2/0 --> 2 x 0 = 1 x 0 = 0. Correct me if Im wrong.

    • le double
      le double 16 days ago

      That's interesting what you said (I'm french, sorry for my English). You are right in a way but you used a propriety instaed of using the definition: Saying 1/0 = inf is saying that inf * 0 = 1 so if 2/0 = inf, then you have inf * 0 = 2 that mean that 1 = 2.
      I didn't understood neither his thinking at the first time but I think I got the idea, by the definition of a division, you obtain 1=2.
      I hope I was clear.

  • The 24th Killer
    The 24th Killer 19 days ago

    So how about x divided by 0 is 0?

  • João Paulo Luz
    João Paulo Luz 20 days ago

    How about infinites that are not the same size? And there are a infinity between 0.1 and 0.

  • Zykel
    Zykel 20 days ago

    1/0=2/0 |×0

  • Dulo Ciskela
    Dulo Ciskela 22 days ago

    The thing is that you can't get zero by dividing a number that is not zero.

  • Sameer Nagra
    Sameer Nagra 22 days ago

    Sir you are really a good teacher and your teaching way is extremely amazing and make the topic so fascinating.

  • Tricus
    Tricus 22 days ago

    If everyone was teaching like you do school would be so much better.

  • alez27 playsgames
    alez27 playsgames 23 days ago

    What is 0 divided by 1 though

  • Arya Mohamad
    Arya Mohamad 23 days ago

    but wouldn’t you say something like
    2/1 is 2
    2/0.1 is 20
    2/0.01 is 200
    2/0 is 2∞?
    and then you can say
    1/0 is ∞ 2/0 is 2∞
    1/0 is ∞
    therefore they’re the same? or am i high

  • Kupfel Cast
    Kupfel Cast 23 days ago

    You are energetic. One thing though, if division is subtracting repeatedly and you apply that to 1 divided by zero (or whatever divided by zero), I would immediately see this is undefined without any extra examples. Because, you are constantly subtracting nothingness from something and that will never reach infinity , but it would simply not work, so it is not working, undefinable. Taking this further: making a non-zero number smaller by dividing it by a non-zero value, this will never be 0, it will be very small, but never 0. That is something I never understood during math courses, that if something approaches zero more and more, at some time it will be zero. Could you explain that to me, because then I am wrong :-)

  • SuperAlgae
    SuperAlgae 24 days ago

    The argument as presented in the video doesn't quite hold. If having two possible outcomes for a given expression makes it undefined, then square roots would all be undefined since the answer can be either positive or negative. Also, infinity does not represent a single value, so trying to perform algebra on it as though it were invalidates the logic.

  • Sabih Ghasemi
    Sabih Ghasemi 24 days ago

    Well that was a complete waste of time, good teacher but I thought I might lern something

  • Ayush singh
    Ayush singh 24 days ago

    I am a student of class 11
    Does this type of professor are there in college or it's just him .
    Please tell me

  • Michael MacAllister
    Michael MacAllister 24 days ago

    More importantly: 1/0 = infinity, 2/0 = infinity: those are not the same infinities! All positive numbers = an infinite amount of numbers. All positive even numbers are also infinite but that infinity is only half the 'size' of the first infinity. Ergo infinity = infinity is an unallowed assumption here, so no conclusion is possible about 1/0 = 2/0. It's infinity that we cannot define therefor anything resulting in infinity is considered undefined (or not allowed) because it would break any theory.

  • Pikachu
    Pikachu 24 days ago +1

    1/0 = 2/0 and that means 1=2 If you think of it like this 1x0 = 2x0 as we all know those equal to 0 soo that would mean 1=2 and thatd be wrong aswell

  • IWTD
    IWTD 24 days ago


  • GoldenSandslash15
    GoldenSandslash15 26 days ago

    I would like to present an argument that’s easier to understand. Division is inverted multiplication. The division problem “20 divided by 4” is really asking “What do I need to multiply 4 by to get 20?” And the answer is 5. But if you say “1 divided by 0”, then the question is “What do I need to multiply 0 by to get 1?” And no answer can satisfy that question.

  • Pham Minh
    Pham Minh 26 days ago

    first mafs teacher i actually listened for 9 mins

  • Hyper Akali
    Hyper Akali 27 days ago

    Fun fact: Tony stark can divide by 0

  • Farzad Khan
    Farzad Khan Month ago

    love ur classes,Sir😍

  • Anirudh Starc
    Anirudh Starc Month ago +11

    Legend has it that Einstein is still subtracting 0 from 1.

  • Sadik Hamza
    Sadik Hamza Month ago

    Very creepy

  • satyam singh
    satyam singh Month ago

    So if its truly undefined then why in solving problems we take n/0=infinite?....

  • Durrani Mapping
    Durrani Mapping Month ago

    But then...
    why aren't even roots undefined??? Draw the graph.
    sqrt of 49 is both positive 7 and negative 7. Why can't it be same for Division???
    Read more

  • Nendu Krish
    Nendu Krish Month ago


  • Reginald Cromperty
    Reginald Cromperty Month ago

    I still don't understand how 1 divided by zero wouldn't give you 1. If you're not dividing by anything then the answer is 1.... Subtracting nothing out of 1 would give you 1. Let's say you have one apple and you don't take any away, you would still have 1 apple... Am I completely incorrect?

  • 37gippo Gippo
    37gippo Gippo Month ago

    Wouldn't be easier to explain it using the concept that a division is a opposite of a multiplication? So if you multiple the result of a division by its divider the result has to be the dividend? So which number multiple by 0 gives as result 1? None. So the division by 0 has no result.

  • AZOUGH Karim
    AZOUGH Karim Month ago

    What is the diameter of the circle that the motorcycle makes ???? if we turn the steering wheel alpha degree?

  • FootballPlayer76
    FootballPlayer76 Month ago

    4:45 what about 2 infinity? if there's infinity, can't you multiply that by 2?

  • Lohith Reddy
    Lohith Reddy Month ago

    What!! I didn’t skip it

  • Mohit Mangal
    Mohit Mangal Month ago

    Which class you teach

  • Arvind Das
    Arvind Das Month ago

    That’s amazing 5+5+5 =3+3+3+3+3 but doesn’t mean the same !

  • Blue Mathematics
    Blue Mathematics Month ago

    super eddie woo great job

  • Musab Khaled
    Musab Khaled Month ago

    Oo man teacher what are u saying yaaoo

  • Karan Bhardwaj
    Karan Bhardwaj Month ago


  • Nikoleta Koljanin
    Nikoleta Koljanin Month ago

    I still think 1÷0=infinity

  • preet unadkat
    preet unadkat Month ago

    At 5:53 he said that 1 is not equal to infinite as 1 is not equal to two but 1/0 is totally equal to 2/0 and he took 1/0 as 1 and 2/0 as 2 this is completely wrong why-why

  • preet unadkat
    preet unadkat Month ago

    At 5:53 he said that 1 is not equal to infinite as 1 is not equal to two but 1/0 is totally equal to 2/0 and he took 1/0 as 1 and 2/0 as 2 this is completely wrong

  • Nilobotay
    Nilobotay Month ago

    I bet Chuck Norris can divide any number by zero!

  • Александр Слепнёв

    I want to be a girls to kiss him and fall in love with him

  • Caden Raquel
    Caden Raquel Month ago +1

    Actually, 3 x 5 (or Three times of Five) is 5 + 5 + 5, not 3 + 3 + 3 + 3 + 3.