Introduction to Functions

[@phoenixsplash135]

I used to get bored during maths class.. I now watch Eddie Woo math videos when i'm bored

[@lovejsjo8007]

Fr

[@hanselmarc9notes]

yes

[@arunmoses2197]

Real.

[@diwakardas1807]

Meee tooo❤❤❤

[@saftheartist6137]

You’re not alone

[@GamingStudioAFG]

At the age of 31 after leaving high school 15 years ago. I haven given up my job and went back to college to study mechanical engineering and these videos are helping me massively with understanding a lot of the maths. Thank you.

[@jiminsbluemold]

All the best on your journey, fellow learner!

[@bakalimasudi393]

at the age of 31, I have returned to college to study Physics and Mathematics.

[@HSP9032]

I'm 33, and as I work in corporate, I realized my math fundamentals were weak. Coming here to learn.

[@puckplayer219]

Man, you are SUCH a good instructor. Unbelievably talented.

[@MathSciMadeSimple]

I already understand this concept, but just wanted to come on here to thank you for your amazing videos. Your videos have been a big help since the start of my high school year. Please continue with uploading such amazing videos, they really help a lot of students!

[@aditopguy9785]

i love watching this guy. I went to a private school in the UK and my teachers were nowhere near as good as him. I'm 24 now and self teaching myself maths for a career change. Thanks so much for uploading these videos

[@lostcause78]

Imagine having this guy as your dad or uncle, you would grow up to be a wizard at math.

[@TM_Makeover]

I love these videos just like ur old ones they were pure gold

[@WccDyer]

I find it fascinating how the schools differ from place to place. In America (or at least my state) students learn functions very rushed before tackling lines. Covering them in year 11 after using different functions so that you can extend that idea is interesting.

[@mawgateway]

A more intuitive teaching approach than what I remember from 11th grade with Miss Mars.

[@a.m.3118]

Wish I had such a teacher.

[@xxxnv]

I think this teacher never get old❤

[@HarshfitnessHr12]

Love from Rohtak Haryana India ♥️♥️♥️

[@lakshaydalal541]

bhai coordinates likhne bhool gaya tu

[@sintheta126]

🤣🤣​@@lakshaydalal541

[@toyourinnersoul2832]

@@lakshaydalal541 lmao

[@harshita3975]

@@lakshaydalal541 🤣🤣🤣🤣🤣

[@hasanrants]

a man with a passion to teach mathematics, thanks sir!

[@michaelmaisonpierre6339]

Really nicely done. You see questions and misunderstandings as opportunities.

[@theencryptedpartition4633]

I would love to see you explain BigO notation in mathematical terms, most people try to oversimplify things to make it more intuitive. But I find it more intuitive when it’s in formulas and equations

[@techwithtee8721]

I think Abdul Bari Data structure and Algorithm playlist is a good place to start with

[@MrIdyllic_]

Honestly thank you so much your way of teaching is amazing it helps in be engaged with math you could say

[@aszneemabrotha7347]

Doing ipt at NSB this year. Love all your vids

[@kidegapatrick2214]

I just love Mr woo explanation

[@abhishiktaganguly9557]

Thank you sir!! Needed this very much🙏

[@sahdevchavda7820]

Kindly keep on uploading subsequent lectures too. Thank you very much for your content.

[@L1za_lis3]

I'm writing tomorrow and I knew less about functions before I have watched this video, but now I can even explain it to my 5 year old brother

[@ayas.v6887]

Thankyou professor for the video.

[@jhanschoo]

2:47 is something I didn't realize needed to be explained, but it's indeed not obvious for a beginner who hasn't had much experience with algebra!

[@HinaPuP]

Big thanks from Sweden!

[@Jason-o5s]

Cheer~~an activity or purpose natural to or intended for a person or thing.😊

[@sayyamjain6578]

love and appreciation from india

[@mryounesi7553]

good teacher! well done

[@moonlightyesterday]

بطل بقا اللي بتعمله ده يا مستر اختى بتسمعك عشان مز و خاط°ف قلبها براحة على البنت مش كدة ده انا كمان داخلة مخط°وفة من الغلاف يخربيت جمال حضرتك❤❤❤😢

[@alvaroperezcosta4150]

I love your videos, Eddie! Are you teaching Mathematics in IB? 😊

[@theencryptedpartition4633]

Are u also having AA Math test this week🥲🥲?

[@alvaroperezcosta4150]

@@theencryptedpartition4633 nope, I am a teacher in fact hahaha. My students took the exam yesterday :)

[@theencryptedpartition4633]

@@alvaroperezcosta4150 I think if he did introduce IB Math on his channel, no one would buy revision village subscription haha

[@EverydayKerbonaut.]

Man i wish i had him as my teacher i would be more interested in maths today.

[@Sai-e5b]

Functions are so cool

[@baibhavsharma5397]

Love from assam

[@EverydayKerbonaut.]

I'm 15 and I wish I could get taught by him so badly

[@swadeshbhattacharjee1205]

amazing ❤

[@obeytweety]

I love Mr Woo

[@HeatWaveXsun]

why are you so interesting to watch Nice!

[@His.Eminence.]

Cheers Man you are great

[@ThomasYang-fr7qb]

I need to link this to linear relationships. any video about it? still a good video

[@tobotigers6864]

Love your vids!

[@adarsh5997]

i struggle with finding the range of functions when there are too many sq roots, mods and stuff in the expression

[@rohankhatik9232]

How old your students and which class they are studying

[@nikunjkhurana236]

This is year 11

[@stewbaka4279]

i think this is the beginning of year 11 (15-16 year olds). It should be a subject called math advanced. In australia there are 5 different math courses. Numeracy, Math Standard, math advanced, Math extension 1, and math extension 2, so this is about the middle

[@ThomasYang-fr7qb]

year 11!!! i,m doing this in year 7 australia!!! it is gifted and talented class though

[@abdulazizhawsah9884]

Thank you

[@jayceel251]

i love u i love u bless you and everyone you love

[@arturorochoa9359]

I’m here ‘cause I wanna finally right cool and useful code in Haskell

[@gugandalf]

What is the y² multiplying the f(x) in the bottom of the first half of the board?

[@orekihoutarou3967]

I think you misread the term "eg" for y^2.

[@crissan-nt4my]

i love u eddie

[@ee-td3ex]

why does f(x) = x^2 have "y. " before it?

[@toanhockhaiphong]

Good object

[@lalitadevi365]

Where to watch all lectures? And wheres the second lecture of functions?

[@ValidatingUsername]

Eddie, I hope one day you fully grasp the depths of how far ahead I was and how disgusting and false the narrative that has been cast on my life truly is.

[@md.amanatalikhan9292]

What is the difference between f(x) and f ?

[@Itz_BlazE_]

f is notation for Function. And (x) Is Any Number or Variable..... you take any Function f notation For example:- You take Function V and it's Representing Volume V(x) is a function take any value for (x) Let's say we Have to Find Any Volume of SPHERE* So we write V(sphere) = 4/3π r^3 We drive it's Formula* you can find Any Value of function by this.. Try f(x) -> and (x) = x^3 , put any Number for x 4x+9= ?

[@MontuMaths]

Super

[@Nirzonaparvin]

Mr Woo, you work at where?

[@carultch]

He's teaching at Cherrybrook Technology High School, in Sydney Australia.

[@Sparky-8618]

Amazing class. Sadly it's just fourteen minutes

[@hoomanmoosavi7457]

❤

[@92817]

i have the exact same drink bottle

[@yeeunpark8291]

Haaland haaland he came for Germany he is here to win the foolball cup

[@patienceagbey1402]

Haaland in maths 💀💀

[@MajidAjaz1371]

First viewer💞

[@professionaltrainenthusias4945]

thx man

[@isabellairadukunda2659]

at 11:31 in the first questions the "1" is in brackets why isn't the "a2" in brackets?

[@flam1ngicecream]

I know this was asked a while ago, but if you're still curious: the brackets are usually used when you have a variable being multiplied by something, and need to replace that variable with a number or longer expression. The brackets aren't needed in the a² example because "2a²" already looks like multiplication.

[@daniel-su2xm]

Please become my teacher

[@ayanolibrary]

why are you handsome mr teacher :⁠0

[@ahm4427]

inspirational

[@AartiSharma-oj4dv]

Sir you are very handsome

[@tobotigers6864]

Pls do another season of teenage boss!

[@His.Eminence.]

Pls do Domain and range pls teach its notations of xless than 0and less than 4like that

[@carultch]

Domain is the allowable set of input values. Usually x or t. Range is the allowable set of output values. Usually y. If not otherwise specified that we are interested in complex numbers, both are limited to the field of real numbers. For instance, this tells us that the domain of y=sqrt(x) excludes negative values of x. The domain and range could be the total set of possible values for the function, or it could be a user-limited set, where only a certain interval of the domain is applicable to the problem you are solving. For instance, even though the domain and range of linear functions in general are both all real numbers, you might only be interested in the domain and range that produces positive values for both, if that is what is applicable to the problem. Common notations you'll use for domain and range: A fancy R for all real numbers Square Bracket notation, for inclusive intervals. For instance, x є [-4, 10] would mean the same thing as -4 ≤ x ≤ 10. Round bracket notation for intervals that exclude the end point. x є (-4, 10) would mean the same thing as -4 < x

[@WMW654]

tyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy

[@vedpawar3078]

This thing in the Indian education system (at least the thing which you taught in this video and the basics) is taught in the 9th grade and the teaching style is way different than how you taught but I like your teaching style more than how it was taught to me at least.

[@srutis910]

nah indian teachers never taught functions. Very few do that, Its shit anyway

[@Humans-007]

I clicked within seconds 🧐

[@nurulkarimsohi]

Just wooo

[@His.Eminence.]

🥂

[@javelin5311]

what level of education is this? I mean students struggle to answer on formula for volume of cilinder

[@carultch]

Usually a first year of high school topic, in the US.

[@thatomofolo452]

Help 👋

[@FelpSbtw]

real

[@SlimThrull]

But can we do f(f(x))? (I know, I know. It's coming.)

[@andibensisva2155]

That’s a First-class function in CS.

[@carultch]

Yes, that's called iterative composition.

[@gefitrop3496]

11th grade?? Bro the fuck they doing over there until 11th grade?

[@lachlanaulich3566]

Mate, you don't learn any of that stuff until year 10. Maybe a little like this in year 10 but it doesn't get expanded upon until year 11. Our education system is....interesting

[@gefitrop3496]

@@lachlanaulich3566 bruh, we learn this in 7th grade

[@lachlanaulich3566]

@@gefitrop3496 well congratulations, you've just one upped us. What country are you in btw

[@sheppy5152]

@@gefitrop3496what country are you

[@gefitrop3496]

@@lachlanaulich3566 germany. also the volume of a cylinder here is like 8th grade, that confused me too

[@yeeunpark8291]

Hahahahah

[@indrajitgollar8108]

i think substituting f(u-7) = 2(u-7)^2 + 3 is kind of confusing here, anyone here with the same thoughts?

[@lewikj186]

It’s not squared. with f(u-7) you just substitute in (u-7) wherever x is. So 2x+3 becomes 2(u-7) + 3, then you expand out the brackets and it becomes 2u-14+3, then you can simplify to 2u-11

[@chandanbanakar333]

why would you square (u-7) in the RHS

[@lewikj186]

@@chandanbanakar333 you don’t because it doesn’t say x^2

[@chandanbanakar333]

@@lewikj186 I know .. I was asking him, why he did it ..

[@nosi_supremacy]

​@@chandanbanakar333 its not squared, square of 7 is 49 not 14. So the 2 did that bud

[@AartiSharma-oj4dv]

S

[@charcoollive6126]

savier

[@dereckhasken9055]

Advanced Math in Australia in year 11 (former 5th Form)??? In Europe “ Advanced Mathematics” starts in year 8 (former 2nd Form) this says a lot about the current level of Australian education

[@rev0cs]

bro i wish this guy was my teacherrrrr

[@Liya_3377]

You speak so fast I can't understand😢

[@AnnuPriya-jm2fr]

Use subtitle

[@mariaroberti6096]

why are you fussing? stay calm in exposing and don't gesticulate too much, you create too much distraction with your gesticulations

[@Change62]

Why I am sensing that the students in his class are smoking weed.

[@Kiwigeo8339]

Probably because you're a total weed head and you assume everyone else is as well.