These videos consistently distract me from my actual math homework because none of my teachers tell me WHY math works. They just want me to do the problems. I always want to know HOW mathematicians came up with this stuff and why it works!
@billyleecw5 жыл бұрын
Nofxthepirate Math is the subject of the physical. It allows us to understand the workings of this world. Calculus, invented by Isaac Newton (And Leibniz) was what aided him in the understanding of physical, such as his famous and often abused F = ma. A pretty complex equation in itself (isn’t it physics? Yes but math and physics are closely related. One cannot happen without the other), it allows us to understand how the world works and how things work to put it simply. Elementary math like these teaches us the fundamentals to understand the workings of the world. It may not make sense now when you don’t see the full picture, but it is essential. Enjoy!
@jordanmckchicken38655 жыл бұрын
@@billyleecw calculus was not invented by Isaac Newton
@monoman40834 жыл бұрын
google it..
@ganeshchavan20384 жыл бұрын
Same with me
@brandonstudie29414 жыл бұрын
@@billyleecwThankyou.
@fenfox3 жыл бұрын
His teaching methods are very simple but the main thing is that it all comes from his heart instead of simply his desire to earn money unlike most teachers today. We need more teachers like you, sir. We LOVE YOU!
@danm32132 жыл бұрын
Unlike most teachers today?? How do you know the intentions of 'most' teachers. You sound like an underachiever looking for somebody else to blame.
@SamuelsBookReviews2 жыл бұрын
@@danm3213 you sound like a teacher
@heyitselsa1522 жыл бұрын
Desire to earn money?? Buddy I promise you no one is going into teaching for the sole burning desire of earning a ton of money lmao
@kyh148 Жыл бұрын
How much do you think teachers earn... Not enough to do a hard and stressful job just to earn the money. What I do suspect though, is that some might do it out of a desire for a little bit of power over students.
@stargazer76448 ай бұрын
Are you nuts? Nobody is a teacher because of a desire to earn money. Teachers don't make anything.
@thane94 жыл бұрын
I love that his elevator music example was the girl from ipanema.
@silasmarup-dalsten40733 жыл бұрын
Why
@hareecionelson58753 жыл бұрын
I was checking the comments for this exact comment. Love it
@4dr_14n23 жыл бұрын
0:52 " You get a weird f*cking number"
@creativity82353 жыл бұрын
laughed my ass off at that part haha
@arnavsinghal51423 жыл бұрын
yea....i was wondering like did i hear that right...??? 😂
@Tfame3 жыл бұрын
funky*
@irezak3 жыл бұрын
The teacher I wish I had, for sure for sure 😂
@alvarezkentalfe5213 жыл бұрын
How did I not notice thissssss
@head854 жыл бұрын
I'm 35 today, have a Bachelor's in Mechanical Engineering from quite a reputable university, and I just discovered why "irrational numbers" are named as such😞
@borisdorofeev3 жыл бұрын
Same thing mate. 35 y.o. Bachelor Medical Science.
@julianbell91613 жыл бұрын
It seems to be an Australian thing
@jurajojo25432 жыл бұрын
@@julianbell9161 No, he means the fact that "irrational" numbers mean numbers that cannot be written in a ratio
@fenfox3 жыл бұрын
I usually come across this guy's videos while studying for my exam so I watch the videos partly even if they aren't related to my study topic. This time, I was so excited to see one of his videos and my topic match so I watched the video. I can say that I had seriously entered flow and I was enjoying it so much that I could've gone on for hours without a sign of exhaustion. Eddie sir, I simply adore the way you teach and hats off to you☺️
@mitchelldaniel79852 жыл бұрын
Love how you are not telling us to do this equation and to show us how to do it but actually describe it and let us know the why part of the question. This even as a year 10 student has cleared my head a bit.
@nehemiahchoi4 жыл бұрын
Thanks Eddie Woo. Your work inspires my teaching. You are saying facts that are thought provoking.
@0xb15h4l10 ай бұрын
You are a legend Eddie!
@apporvaarya6 жыл бұрын
Amazing..I never have imagine such a analogy..😄😄
@muhammedali80256 жыл бұрын
A question for Mr Woo, I'd like to hear his way of explaining : How do they know it is actually irrational and doesn't reoccur after like a billion decimal places. How do you proove it's irrationality?
@forkevbot5 жыл бұрын
Look up on youtube "proving the square root of 2 is irrational" you can do it because you can prove that it can't be written as a fraction. Then you just assume the same for many other roots.
@lelesecchi61404 жыл бұрын
You write down sqrt(2)=p/q, you tell that there's a rational number p/q equal to sqrt(2) and this is the hypothesis. Then you proove it by absurd, the equivalence can't be resolved because of even and odd number rules. That's it
@chrisofnottingham4 жыл бұрын
There are two parts to answering this; The first is that if a decimal does repeat, it can be fairly easily shown that it must be expressable as the ratio of two integers and vice versa. This is actually part of the school mathematics curriculum. The second part is showing that the square root of any integer that isn't a perfect square, can't be expressed as the ratio of two integers. The easiest way to see this by considering a possible lowest form ratio a/b and putting a and b in terms of their prime factors. For a/b to be in lowest form there are no common primes between a and b. Thus when a/b is squared there are still no common primes and the ratio can never cancel to an integer.
@chrisbroome6 жыл бұрын
Might be a U.S. thing but I've never heard of the irrational numbers being called Surds.
@brittanyrandolph15246 жыл бұрын
He's from Australia I believe.
@SkeleCrafteronYT6 жыл бұрын
He’s Aussie
@prabhusatyam77186 жыл бұрын
I studied surds in class 10th....lol
@timperry69486 жыл бұрын
Never heard that term in school here in Canada. We just called them irrational
@TheCoffeeToffees6 жыл бұрын
Chris Broome We call them Surds in the UK too
@michaelnoronha73864 жыл бұрын
Great work Eddie, Australia's children and virtue youtube, all your students are blessed off the stress of maths. God bless you.
@graceelizabeth84354 жыл бұрын
Im in the middle maths class at my school because I transferred here at the beginning of the year and we aren't learning surds. That privilege is reserved for the top class. So I'm here to prove a point to my teacher that Im actually serious about my education and the things I learn even if she isn't.
@borisdorofeev3 жыл бұрын
Wow! I knew they called "irrational numbers", but did't know why! Thank you Eddie!
@Apoorvpandey6 жыл бұрын
Impressive explanation .... got it at once !
@ThePiGirl5 жыл бұрын
Brilliant lesson!
@chumsky87547 жыл бұрын
Why, I never heard something so ab"surd"! :-)
@prabhusatyam77186 жыл бұрын
I studied surds in class 10th ....lol
@dengthiep13224 жыл бұрын
Surd is there, that's how I was taught in high school, might be wondering where you came from
@Loosehead4 жыл бұрын
Oh my sides, please stop. No, please stop.
@scanurasiri13 жыл бұрын
Greatest maths teacher
@gerarddonovan4145 Жыл бұрын
Ur a good teacher in fairness to you.. Greetings from Ireland
@musmodtos2 жыл бұрын
06:31 - " _What kind of music would this be?_ " Me: Vaporwave?
@tototiti14543 жыл бұрын
What about continued fractions representation of square roots? It might be interesting to show them that as a parallel of your ratio examples. (Someone might have already asked about it in a previous comment, I have read some but not found one about it so far)
@cimex74924 жыл бұрын
way better teacher than ive ever had in my life
@HS143SH4 жыл бұрын
Great too easy explained . Love. From india 🇮🇳
@beyondhistory30393 жыл бұрын
**This guy is the most charismatic man ever **🔥
@kevinwoo85936 жыл бұрын
Crazy immortal jazz musician? Nice!
@destructiveodst119911 ай бұрын
About to go into honours in maths and these videos are still fun to watch
@abhii33505 жыл бұрын
Hello sir, I just browsing in order to get some knowledge over surds cause I have an exam😁😁😁. Well now I can right the exam and you're really an awesome teacher I've ever seen in my life.. You're friendly and making the concept getting on to the mind...
@homemadesauce61533 жыл бұрын
Bro, the first time I heard "that's a weird f*cking number. I died
@praveenmaxy72004 жыл бұрын
I'm 30 now I heard surds when I was 12 or 13,. now I know what surds are.....Truly u r a genius sir...
@RJSRdg4 жыл бұрын
Poor kid's now been watched turning up late for school by 81K people!
@ashlingsprouster68554 жыл бұрын
mr woo you absolute legend
@jeanettethuy30084 жыл бұрын
Omg your Videos are so gerate thank you for filming that:)
@Smokyjohnson19833 жыл бұрын
Oh boy now you’ve done it... “Bass Guitar plays the same 4 notes throughout the song...” *Enter Davie504 🤪
@theroutetomathematics3 жыл бұрын
The Best teacher👌
@simpleman2832 жыл бұрын
I did not see this teacher reply to any comments, so I don't know is he reads them or not, but I would like to thank him for the way he interacts with his students to get them interested in the lesson. Good on you Sir.
@LyfSukz4 жыл бұрын
I'm so amused that he said it's not "irrational numbers" like "you crazy man" immediately after comparing irrational numbers to a crazy jazz musician lol.
@elimgarak70902 жыл бұрын
I just now realized that irrational has the word ratio in it. Maybe, all this time, irrational means non-ratio :0
@LyfSukz2 жыл бұрын
@@elimgarak7090 absolutely. You can sort of think of a fraction as a ratio of two numbers, and an irrational number is one that cannot be expressed as a fraction.
@samm68716 жыл бұрын
7:07 lol :D u missed half of the best maths lesson ever
@nekogod4 жыл бұрын
One thing, you said ''not like 'you're being irrational you crazy man''' aren't irrational numbers the exact reason why we use the word irrational in that context?
@xXbussydestroyerXx5 жыл бұрын
crazy immortal jazz musician I died
@izzatafiq15583 жыл бұрын
the moment he said sax for saxophone, i looked around to make sure my mum didn't heard it😂
@Mark73 Жыл бұрын
Is the dot over the repeating decimal a regional thing? Because I always learned that it's a straight horizontal line over the number.
@mentallychallenged3270 Жыл бұрын
I've been told that you can use both, and they both mean and do the same thing
@WhatIsThisAllAbout4 жыл бұрын
6:37 i actually raised my hand
@vinceperry7696 жыл бұрын
Numbers that "terminate" do in fact repeat the repeating sequence being a zero by itself.
@vincent-ls9lz4 жыл бұрын
good to know, but in mathematical notation that's just assumed. Same way how a blank '2' always means positive 2; we never write +2.
@melmelmel_4 жыл бұрын
My teachers have literally no idea how to teach this year. I'm failing extension maths because of their inability to explain anything! My maths teacher literally writes the rules and an example on the board while we copy them down in silence. At least this will be helpful when my school shuts down due to corona! Now that I found theses videos, maybe I won't fail!! Thanks!
@TheRedAzuki4 жыл бұрын
Check out Khan's Academy, he helped me back in the days
@danielhobbs58064 жыл бұрын
This is fantastic! Thankyou for this quality content. You are doing the world a real service. Cheers
@BlueGiant692022 жыл бұрын
Could using the word 'square' rather than 'triangle' create some misconceptions similar to saying 'I saw the sunrise'?
@bg6b7bft3 жыл бұрын
Watched video, but still had to google what a surd is. The missing info was that a surd is a _type_ of irrational number formed from the square root of a rational number. It's not just Austrailian for "irrational number".
@realmarker3 жыл бұрын
“how many of you play an instrument?” Me: *puts hand up*
@uncertainhopes85474 жыл бұрын
Which camera you use ?
@ethanfang79277 ай бұрын
Thanks Eddie ( I have math yearly tomorrow and this is one of the topics) [I Also have science]
@flamephlegm4 жыл бұрын
I think in the U.S. we would put a line over 0.3 and refer to it as "point three replicant" or something.
@papajulietromeo-6504 жыл бұрын
Same in Germany. We also use the line notation, but call it "period".
@flamephlegm4 жыл бұрын
@@papajulietromeo-650 That's cool! Thank you for sharing!
@papajulietromeo-6504 жыл бұрын
@@flamephlegm I've noticed several differences in his notation compared to what I learned in Germany, e.g. in other videos he puts arrowheads on both sides of a coordinate system axis. I learned that you should always only mark the positive end of the axis. It's interesting that mathematics, which is often considered to be the universal language of science and engineering, can be written in sometimes ambiguous ways. Dot-above-something could also mean "derive with regards to time", dx(t) / dt.
@flamephlegm4 жыл бұрын
@@papajulietromeo-650 the commas in numbers in Mexico still throws me off in a big way.
@anjalisharma18953 жыл бұрын
Your videos become my way of procrastination ..
@yumenokira75954 жыл бұрын
I wonder what would think the boy who came late to the class about his math teacher speaking about guitar when he came in
@RJSRdg3 жыл бұрын
That kid coming in late is now on youTube for eternity!
@jackmandu5 жыл бұрын
Was the elevator music he was humming, The Girl from Ipenema?
@LottieBronte4 жыл бұрын
Jack Mandu I thought so too!
@TenguSteel4 жыл бұрын
Why not use the term transcendental number for when a square root does not result in an integer and always results in a transcendental number there are other transcendental numbers of course
@ganeshchavan20384 жыл бұрын
Can anyone tell me, this lecture is of what standard ( grade) ??
@jameshumphreys97156 жыл бұрын
There is a way of doing square roots, that don't have perfect square roots, finding the nth tooth, which is like a long division way or the Babylonian method
@rialtho_the_magnificent6 жыл бұрын
Is that a typical Aussie accent? Surds, that is?
@peterlawrence4087Ай бұрын
7:09 being the most replayed is funny lol
@samuelmahatma92733 жыл бұрын
Thank you
@nikhil_06_5 жыл бұрын
So is "pie" a surd as it can be written as 22÷7 but it's decimal places doesn't repeat in a certain pattern?
@0Coeus5 жыл бұрын
Pi is irrational and can not be written as a fraction. 22÷7 is just an approximation :) (according to my calculator only accurate to the second decimal place, so not a very good approximation)
@carultch3 жыл бұрын
Surds involve square roots of integers in order to define this. Numbers like pi and e eare beyond this, in terms of how disconnected from ordinary numbers they are. Pi and e classify not only as irrational, but also as transcendental. Surds are part of a classification of irrational numbers called algebraic numbers. Transcendental numbers are numbers that are not algebraic, rational, or integers. Numbers that transcend algebra, as in go beyond algebra. Algebraic numbers are roots of polynomials with a finite number of terms. These are numbers that involve roots, whether square roots, cube roots, or even roots of higher orders. But the point is, there is a finite number of terms in identifying an algebraic number in terms of 4-function math and roots. It takes an infinite number of terms in the polynomial, for a transcendental number to be the root of the polynomial. It is common that these numbers are identified as an infinite series, that give a means of calculating them. That is, a pattern of numbers that when added up, will converge to this value.
@Aristothink2 ай бұрын
Great video, as always....but remember that although all surds are irrational, not all irrational are surds. "pi" and "e" are irrational but not surds. To be a surd we have to be inside a root....
@M4rtingale4 жыл бұрын
Tall and tan and young and handsome , the boy from South Australia goes mathing
@samuelwillowcreek87644 жыл бұрын
Wait did he sing "The Girl From Ipanema" as the "elevator" song?
@peterciurea77715 жыл бұрын
So are Surds short for ABsurd?
@RJSRdg3 жыл бұрын
Only if it's the square root of AB...
@Roger-hu4tk3 жыл бұрын
What is this class? High school or college?
@losedolla65904 жыл бұрын
3:40 in Germany we use a line over the three instead of a dot🤔
@flinthart4 жыл бұрын
We use a line too (actually both), but we usually use it when there are 2 or more numbers repeating like 0.65656565656565....
@epicuber13512 жыл бұрын
I watched this video with popcorn lol
@lokeshraghavendra11594 жыл бұрын
I wish this guy was my math teacher
@vivekd0052 жыл бұрын
7:06 That Kid must be thinking, only if I came early that day
@An_Iron_God694208 ай бұрын
damn i didnt realize this was 8 years ago, or instead of the crazy immortal jazz musician analogy, he'd just call it ai. Times change huh.
@zackmaradeen59024 жыл бұрын
@Davie504 Eddie Woo is a bass player confirmed? Please make a video about this
@Loosehead4 жыл бұрын
The key take-away is that surds can never be an exact representation of a value. Writing sqrt(7) is as exact as you can get.
@bradster17084 жыл бұрын
The same can be said of Pi
@BekahBBlade5 жыл бұрын
So they're... ABSURD!!! LOL
@ozgacity4 жыл бұрын
Love your channel, but to be truly rounded, remember you can revert, but you can't revert back because back is already contained in the definition and to do so is a redundancy
@callumnorthcott10064 жыл бұрын
this is good
@76koma5 жыл бұрын
Different analogy for music :P spotify playlist. popsong is one song one, elevator music, is playlist on repeat on given order. Crazy jazz music is random playlist which also takes in spotify suggestions, it never goes to exactly same repeat...
@RTD5532 жыл бұрын
Not quite 'dot dot dot' after the calculator's final digit - the calculator has actually rounded to that last sig. fig.
@kiel53903 жыл бұрын
that kid who couldn't find the class hahaha
@SteveJones313 Жыл бұрын
Not gonna lie, I had to rewind because I really misheard what you said at 0:53
@ikeabuchi14 жыл бұрын
"Crazy man" =irrational "Crazy man" =Ab(surd)
@goman99982 жыл бұрын
Sir we can write 5 as 5/1 and this is rational then why √2 /1 is not rational
@JDela102 жыл бұрын
5/1 is not the same thing as sqrt(5) though, the same as 2/1 is not the same as sqrt(2). Technically, 5/1 is sqrt(25), and 2/1 is sqrt(4).. kinda.. also have to remember our negatives can be squared. Sqrt(2) / 1 is not the same as 2/1.
@ericsills64844 жыл бұрын
Wow, there is a difference here in America. We use a bar over the number to represent repeating.
@VKNATIONWATCH2 жыл бұрын
Year 10 maths, J.T + Mitchell watched the video
@shashank_kishore_2 күн бұрын
❤❤❤❤❤❤❤❤❤
@godaelite6 жыл бұрын
I hear a girl from ipanema.
@twp0074 жыл бұрын
For the surd, the Music might be likened to the music played by a wind chime.
@WhitePegasus3263 жыл бұрын
7:09 that chad tho
@vinceperry7696 жыл бұрын
square roots of numbers that are not squares are all irrational as are all radicands that are not bases raised to radical indices.
@alotofclouds57064 жыл бұрын
logo os cara q faz musica pra sempre q são surdos
@barryhughes97646 жыл бұрын
So is the square root of a rational number irrational? Confused !
@Lashb1ade6 жыл бұрын
Sometimes it is irrational, sometimes it isn't. First look at integers (whole numbers): If you take the square root of a square number (1, 4, 9, 16,...), you get a rational number out. If you take the square root of a non-square number (2, 3, 5, 6,...), you get an irrational number. Now consider fractions: If you take the square root of a "square fraction", e.g. "1/4" or "4/9" you will get a rational number (for our examples the answers will be "1/2" and "2/3"). If you take the square root of a fraction with non-square numbers in it, e.g. "1/3" or "3/4," then you will get an irrational.
@Nick-ui9dr4 жыл бұрын
But why it goes nonrecurring? What makes them go changing patterns? ...U can also answer by why in some got reoccurring pattern... that will explain it too I suppose. :)
@carultch3 жыл бұрын
You get the recurring pattern for rational numbers, because it is a ratio of integers. Eventually, every denominator that doesn't form an ending decimal, will be a factor of a number like 9, 99, 999, 9999, etc. In the case of 1/3 and 1/9, we can express them as fractions out of 9. In the case of 1/11, we can express it as fractions of 99. Less obvious, in the case of 7ths, we can express it as fractions of the number 999,999. The number of 9's that form this grand multiple of the denominator in question, tells us how many digits get to repeat. 1/3 equals three ninths, thus repeats the digit 3. 1/11 = nine ninety-ninths, thus repeats the digits "09". 1/7 = 142857 / 999999, thus repeats the digits "142857". For this reason, only rational numbers can have repeating patterns of digits in their decimal form. If there is a repeating pattern of digits, there exists a number made up of 9's from which it is a factor. If it is irrational, by definition, it cannot be a fraction of anything, so its digits must not form repeating patterns.
@hareecionelson58753 жыл бұрын
5:12 Is he going to say Jazz? I haven't watched to the end yet... EDIT: There are no wrong notes in Jazz
@sunrain482011 ай бұрын
💕💕💕💕💕💕✌🏽
@GamerSaga4 жыл бұрын
parts of these video are rational, though also irrational but mostly just ab' surd!
@lucasfreire10903 жыл бұрын
At 0:53 I swear I heard him say "weird fucking number"
@roninnib66353 жыл бұрын
Funky
@lucasfreire10903 жыл бұрын
@@roninnib6635 i know, mate, that's why I left a comment, because It sounded like it
@sareenasaadie345510 ай бұрын
can he be my math teacher 😭😭
@Nick-ui9dr4 жыл бұрын
Surds are absurds! No? ...Then why they sound like it? Peers must have thought something before naming them. :)