# Dividing by zero?

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Gigemo 27 hours agoSo, let's consIDEEEEER...

Literally just some rock.Day agoThat is exactly why we need a 3rd numeric dimension. :p

AscendityDay agoThis guy should run for president

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

No pain No gainDay agoKeep moving hero

Celezon2 days agoNerd.

Gunner Canham Pla2 days agoDividing by zero-the offspring.Temazo

ReviewTechUSSR2 days agomaybe 2/0=2*infinity?

Christopher Nanista11 hours agothen it could also be 2*-infinity so that doesn't help to solve the problem

ayoub alami2 days ago0 = everything, because the universe have started from nothing

Chuong D2 days agoWhat's zero divided by zero?

Momoe monkey2 days agoWhat happened to infinity going into both negative an positive numbers

Ali Faiazi3 days agoOmg I just got it rightnow. thanx for sharing your useful videos

Kalonji Stephens3 days agoI wish I couldve talk to this dude, so many theories I wanna discuss but no one to understand it

Russel Webb2 days agoYou are not as smart as you think you are.

mahdi noroozi3 days agoamazing illustration , great job Eddie.

Retarded Moose3 days agoIf 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 deep3 days agoHere is how i look at it

___ uncountably

| |

Toughen Up, Fluffy4 days agoWhere 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 Bonaparte4 days agoaustralian commies 🖕

iThunder4 days agoThis is a math revolution .

William Salame4 days agoOk

Ninja of the Lemons4 days ago^{+1}This guy watches too much Rick and Morty

Mama Crow5 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 Xtreme5 days agoOnly on our universe.

Jake fromStateFarm5 days agoso 1/0 can be ANY number. like 666, but at the same time it wrong...

UnityDog Gaming6 days agoThe 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 Liu6 days agoChuck Norris knows the answer

Balázs Börcsök6 days agoHow do you divine a non integer with the idea that you subtract until it becomes 0?

Karthik c b7 days agoYou said "infinity is an idea" in one video and here you are treating it like a number.

Karthik c b5 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 boii5 days agoit 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 Kamoji7 days agoNo homo but I wanna bang him

Pawan Pratap7 days agoMultiplication is repeated addition is right but division is not equal to repeated subtraction

Prateeth Damodara8 days ago1 ÷ 1?

"2"

1 ÷ 0.1?

"9000"

The class was happening at 4:20 pm

Sam Miles8 days agoIf i tell u to write down 3 times 5 .. u will do 5plus5plus5 .. so 3×5 is 5plus5plus5 .. he just reverse the logic

donplayleon8 days agoDon’t know if he teaches to 5 year old or they are all autist who Try to understand math

Mr. Gamer8 days agofake news

jose ryan latosa10 days ago, our teachers already told us that but they never explained why... thank you very much sir, i started to like math

Eddie Woo8 days ago^{+1}The *reason* is the most important part! Glad you understand it now, Jose :-)

ashu gurtoo10 days agoDam he is good ....

Magnets & magic10 days agoObviously he's asian

Walking Meme10 days agoHe is better than my math teacher

林育任10 days agoThat 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 boii5 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 Kevin10 days agoWhy is grade 2 math being taught to a bunch of people that seems to have a 20 yrs old voice?

Cai10 days ago2/0=2∞

Angelica W11 days agoWait is he explaining basic multiplication and division to college students ?

Fen boii5 days agoAngelica W they are school students

Ram Kumar Mitra11 days agoAwesome

Elijah Harris12 days ago"The limit does not exist... THE LIMIT DOES NOT EXIST"

Sorry, I'm a Mean Girls fan

Angel Mendez-Rivera12 days ago5:22 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 Utd12 days agoJust 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 Rajput13 days agoSir 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 Samanthula14 days agoAwesome...

Van Nguyen15 days agoWhere 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 alves15 days agoi wish this guy was my teacher

Sahithyan Kandathasan16 days agoDoubts:

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 Kumar16 days agoOne of the best MATH'S teacher I've ever seen...

Joey Lynn16 days agoevery 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'a17 days ago1/0=1

Bek'a17 days ago1*0=1

jayshankar kumar17 days agoBut 1=2 can be

Angel Cayetano17 days ago2+2 is 4-1 thats 3 QUIK MATHS

Muhammad Irfan18 days agoUndefined and infinity are completely different things!

Carlos Garcia18 days agoI couldn’t make it past his accent plus he talks way too fast

Hassan haider19 days agoWhen 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 double16 days agoThat'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 Killer19 days agoSo how about x divided by 0 is 0?

João Paulo Luz20 days agoHow about infinites that are not the same size? And there are a infinity between 0.1 and 0.

Zykel20 days agoif

1/0=2/0 |×0

than

1=2

Dulo Ciskela22 days agoThe thing is that you can't get zero by dividing a number that is not zero.

Sameer Nagra22 days agoSir you are really a good teacher and your teaching way is extremely amazing and make the topic so fascinating.

Tricus22 days agoIf everyone was teaching like you do school would be so much better.

alez27 playsgames23 days agoWhat is 0 divided by 1 though

Nullpointer22 days agoZero

Arya Mohamad23 days agobut 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 Cast23 days agoYou 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 :-)

SuperAlgae24 days agoThe 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 Ghasemi24 days agoWell that was a complete waste of time, good teacher but I thought I might lern something

Ayush singh24 days agoI am a student of class 11

Does this type of professor are there in college or it's just him .

Please tell me

Michael MacAllister24 days agoMore 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.

Pikachu24 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

IWTD24 days ago0

GoldenSandslash1526 days agoI 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 Minh26 days agofirst mafs teacher i actually listened for 9 mins

Hyper Akali27 days agoFun fact: Tony stark can divide by 0

Farzad KhanMonth agolove ur classes,Sir😍

Anirudh StarcMonth ago^{+11}Legend has it that Einstein is still subtracting 0 from 1.

Sadik HamzaMonth agoVery creepy

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

Durrani MappingMonth agoBut 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 KrishMonth agoWow!

Reginald CrompertyMonth agoI 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 GippoMonth agoWouldn'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 KarimMonth agoWhat is the diameter of the circle that the motorcycle makes ???? if we turn the steering wheel alpha degree?

FootballPlayer76Month ago4:45 what about 2 infinity? if there's infinity, can't you multiply that by 2?

Lohith ReddyMonth agoWhat!! I didn’t skip it

Mohit MangalMonth agoWhich class you teach

Arvind DasMonth agoThat’s amazing 5+5+5 =3+3+3+3+3 but doesn’t mean the same !

Blue MathematicsMonth agosuper eddie woo great job

Musab KhaledMonth agoOo man teacher what are u saying yaaoo

Karan BhardwajMonth agoBeautiful

Nikoleta KoljaninMonth agoI still think 1÷0=infinity

preet unadkatMonth agoAt 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 unadkatMonth agoAt 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

NilobotayMonth agoI bet Chuck Norris can divide any number by zero!

Александр СлепнёвMonth agoI want to be a girls to kiss him and fall in love with him

Caden RaquelMonth ago^{+1}Actually, 3 x 5 (or Three times of Five) is 5 + 5 + 5, not 3 + 3 + 3 + 3 + 3.