Curves, Parameterizations, and the Arclength Parameterization

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  • Опубліковано 23 гру 2024

КОМЕНТАРІ • 134

  • @shehabeldinhousein5875
    @shehabeldinhousein5875 2 роки тому +37

    "... what parametrization does, that it tells us where all the points on the circle at some specific time t". sometimes such sentences are the thing needed to fill the gaps. And such sentences comes from someone who really understands the topic. Thank you!

  • @NuclearPhysix
    @NuclearPhysix 4 роки тому +35

    Driving from London once, I noticed a police car getting interested in the magnitude of my position vector. So I slowed down naturally. Love you, Professor

    • @DrTrefor
      @DrTrefor  4 роки тому +5

      Ha!

    • @NuclearPhysix
      @NuclearPhysix 4 роки тому +1

      @@DrTrefor You teach in a clear way that I love. I wish I had you as my Professor when I did that Engineering degree. You got me when you expressed speed as a position vector, made so much sense. Subbed!

    • @farrukhsaif108
      @farrukhsaif108 3 роки тому +8

      @@NuclearPhysix Speed would be the *magnitude of the rate of change of your position vector*

  • @gentlemandude1
    @gentlemandude1 4 роки тому +23

    Dr. Bazett, I often come to your videos thinking that I fully understand the topic, but inevitably during my viewing, you mention something that I hadn't considered. Thank you for presenting such wonderful and comprehensible mathematical insight. You're videos are gems!

    • @DrTrefor
      @DrTrefor  4 роки тому +7

      Thank you! It is tricky for sure as my current videos are presuming a lot of multicariable calc stuff. If you ever get lost, feel free to comment and I can link the relevant prereq video hopefully👍

    • @b49satyarani32
      @b49satyarani32 3 роки тому +1

      @Professor ~ ur video is so much visualising.

  • @_kantor_
    @_kantor_ 3 роки тому +187

    So glad I'm studying physics in a time where there is so much high quality vids of kinda advance math. You're great! Thank you so much! Lots of appreciation from Tel aviv

    • @DrTrefor
      @DrTrefor  3 роки тому +25

      You're most welcome! Glad to have some subs from Israel!

    • @naman4067
      @naman4067 3 роки тому +2

      Me too

    • @hrperformance
      @hrperformance 2 роки тому +2

      Mate I could agree more

    • @omargaber3122
      @omargaber3122 Рік тому +18

      @@DrTrefor you mean palastin!!

    • @mianokasha1462
      @mianokasha1462 7 місяців тому +9

      free palestine

  • @tateallen9972
    @tateallen9972 3 роки тому +9

    I hope you make money off of these videos because you deserve to. Thank you for all the help. You've helped me understand all my calc II - IV concepts, and I'm very grateful

  • @diveintoengineering6089
    @diveintoengineering6089 3 роки тому +25

    The best explanation I've seen. I just failed my multivariable calculus course but your videos will be a valuable help during my next chance. Thank you!

  • @addifalcone2817
    @addifalcone2817 3 роки тому +5

    I’ve never been more grateful to find someone on youtube. This is helping me out so much for my calc 3 final tomorrow! Thank you!!

  • @williammartin4416
    @williammartin4416 Місяць тому +3

    Thanks!

    • @DrTrefor
      @DrTrefor  Місяць тому +2

      Thank you so much!

  • @RyanMcCoppin
    @RyanMcCoppin 2 роки тому +5

    I took vector calculus (Calc IV) in undergrad but my professor left off all the intuition/application and so most of the topics didn't make much practical sense. Really excited to go through this series!

  • @arielacosta6382
    @arielacosta6382 3 місяці тому

    Omg, his enthusiasm and exciting is very inspiring and moves me to get deep into the topics of calculus, a true teacher and genius.

  • @carter613
    @carter613 2 роки тому +1

    The videos are great but listening to this guy lecture is eye opening.

  • @anaslahrichi
    @anaslahrichi Рік тому +1

    Really well explained. I especially like the intuition given and the graphics generated to support your teaching. Thanks !

  • @AninditaII
    @AninditaII 4 роки тому +2

    Sir, I have seen many videos on advanced math but wow ,your videos make me feel it, incredible, and others leave me in half way of the course, u r a lifesaver , gonna watch all playlist.....

    • @DrTrefor
      @DrTrefor  4 роки тому

      It's my pleasure:)

  • @AidanHomewood
    @AidanHomewood 3 роки тому +3

    Wow this was a lot more interesting and applicable than my lecturer. Thanks! You're amazing.

  • @lukefarley8984
    @lukefarley8984 3 роки тому +4

    thanks so much for taking the time to make this playlist its super helpful for undergrad physics here in the uk :)))

  • @joaquintorres834
    @joaquintorres834 3 роки тому +6

    Short and concise, wonderful work! (As always). I'm starting to learn Diff. Geometry and this was helpful! Take care, love from Spain. PD: congrats on hitting the 100k, you deserve it :)

  • @nathanbrazil9345
    @nathanbrazil9345 3 роки тому +2

    Awesome video, I love how quickly you brought together multiple topics I've been learning about in my Calculus 4 class. Thanks for such clear explanations!

  • @Preity-o3t
    @Preity-o3t Рік тому +1

    Extremely grateful for these lectures! Thank you sir!

  • @newyorkguy158
    @newyorkguy158 3 роки тому

    I'm taking vector analysis right now and am so excited at what I am learning from your videos. The conceptual explanations are very good.

    • @DrTrefor
      @DrTrefor  3 роки тому

      Glad to hear that! Excited to see your comment when you get to the end:)

  • @erkzneedtu
    @erkzneedtu 3 роки тому +3

    3:27 the curve is one dimensional but it exists in a three dimensional space, just as the circle is also a one dimensional manifold in a two dimensional space. Thus the smallest number of parameters tells you the dimension.

  • @udaysingh5167
    @udaysingh5167 Рік тому +1

    thanks for making calculus so easy and fun to study.

  • @Harry-ub2fv
    @Harry-ub2fv 4 роки тому +1

    Again thanks, man!. Whenever I wanna understand some topic of multivariable calculus you've made that topic video.:)

    • @DrTrefor
      @DrTrefor  4 роки тому +2

      So glad it’s helping:)

  • @hdheuejhzbsnnaj
    @hdheuejhzbsnnaj 2 роки тому +4

    Love how we get a breakdown of why police care more about the rate of change of your position vector as opposed to your arc length parameterization.

  • @ahmedmusa517
    @ahmedmusa517 Рік тому

    finally found someone who teaches because he likes teaching, I should puy my tuition for you sir,

  • @truongngo638
    @truongngo638 Рік тому

    You are so good! This is proper teaching

  • @sutapamaji2510
    @sutapamaji2510 3 роки тому +1

    Thank you __From India 🇮🇳

  • @adityaswamy9647
    @adityaswamy9647 3 роки тому +6

    Amazing Explanations Professor Love from India Thank you

  • @theroyalplayer4033
    @theroyalplayer4033 3 роки тому +1

    thanks sir This video helps me a lot....love from India❣️❣️

  • @thapaharis
    @thapaharis 3 роки тому +1

    I have always enjoyed watching your videos. Thanks for math more enjoyable.

  • @ananthanarayanan9378
    @ananthanarayanan9378 4 роки тому +1

    Awesome video! Pls cover complete vector calculus soon. Ur explanation is very gud and makes these complex topics easily comprehensible for beginner students like me. Pls continue this series😃

    • @DrTrefor
      @DrTrefor  4 роки тому +1

      Thank you! The vector calculus series is coming out 3 days a week and will be done in about one more month:)

  • @ehsanAnsar628
    @ehsanAnsar628 4 місяці тому

    Thank you so much, Dr. Bazett, for your incredible and in-depth teaching. I truly appreciate it! 🙏 Could you please recommend a textbook that aligns with this course?

  • @sdsa007
    @sdsa007 Рік тому

    thanks this review is helping as a prerequisite for tensor calculus!

  • @ΚωνσταντίνοςΛαζαρίδης-ξ9ι

    perfect playlist. Thank you!

  • @naseemakel7588
    @naseemakel7588 3 роки тому +1

    Thank you Dr.
    From Saudi

  • @matanshtepel1230
    @matanshtepel1230 4 роки тому +1

    Thank you! So excited for these vids 😊

  • @continnum_radhe-radhe
    @continnum_radhe-radhe 2 роки тому +2

    Thank you very much sir 🔥🔥🔥

  • @isaacr7791
    @isaacr7791 2 роки тому +1

    Wish I had you as my professor!

  • @simtholileqaukeni8878
    @simtholileqaukeni8878 2 роки тому +1

    Nice breakdowns.

  • @anupriya7366
    @anupriya7366 4 роки тому +4

    Aahhhh, here is the explanation of parameterization, found it,hashhh. Thanks professor

  • @adresscenter
    @adresscenter 4 роки тому +1

    Very good quality channel
    Thx!

  • @roivinikmossel2998
    @roivinikmossel2998 3 роки тому +1

    your videos are great.

  • @shanmugapriyam2623
    @shanmugapriyam2623 Рік тому

    Need an online course from u
    Beautifully explained🤟

  • @youkaihenge5892
    @youkaihenge5892 4 роки тому +3

    Taking Calc 3 in Spring! Pretty excited for it. 😄

    • @DrTrefor
      @DrTrefor  4 роки тому +2

      Nice! You're going to love it, multivariable is so much cooler than single variable imo

    • @lanog40
      @lanog40 3 роки тому +1

      How is it going so far? It's fun for me!

  • @hrperformance
    @hrperformance 2 роки тому

    Thank you so much for these fantastic videos!

  • @billhopkins8330
    @billhopkins8330 4 роки тому +1

    Very helpful explanation!!!

  • @rafiakhan7279
    @rafiakhan7279 3 роки тому +1

    Ma sha Allah extraordinary way of teaching 👍🏿

  • @elchanu1239
    @elchanu1239 6 місяців тому

    How to parametrize a curve while maintaining dimensional accuracy. Like, say I want a curve that looks like the exponential curve but I want the curve to have dimensions of length L. What do I do? Do I do it like x(t) = se^t, and y = st?

  • @scholar-mj3om
    @scholar-mj3om Рік тому

    Marvelous💯💯

  • @jasonarmondo4619
    @jasonarmondo4619 3 роки тому +1

    7:41 ' doesnt depend on the specific path along the curve", but isnt this just the curve , since the curve defines the path?
    Or do you mean going along the curve at different speeds, which correspond to different time parameterizations of the curve (as opposed to *the* arclength parametrization, which has unit speed the whole way'

    • @DrTrefor
      @DrTrefor  3 роки тому +2

      It's like a highway. The highway is fixed. How you drive down the highway, faster or slower, doesn't change anything.

  • @bananamanjunior7575
    @bananamanjunior7575 2 роки тому +2

    There is actually a rational parametrization for the equation x^2+y^2= 1 it is [(1-t^2)/(1+t^2), 2t/(1+t^2)]

  • @dinamustafa6115
    @dinamustafa6115 2 роки тому

    "whereas the time parameter here is reflecting the specific choices for a specific particle on a specific path along this curve so which do you prefer" could you explain this statement more ?

  • @newyorkguy158
    @newyorkguy158 4 роки тому +1

    What is your choice of textbook for MV and Vector Calculus?

    • @DrTrefor
      @DrTrefor  4 роки тому +1

      The "standard" full service calc books are Thomas and Stewart, both are fine

  • @forresthu6204
    @forresthu6204 5 місяців тому

    Hi Dr Bazett, which textbook should i use in order to follow this playlist?

  • @UllyanneFreire
    @UllyanneFreire 3 роки тому

    thank you for this, now i finally get it

  • @hikmatullahpakhtoon3694
    @hikmatullahpakhtoon3694 4 роки тому +2

    Sir! As equation of a circle is not a function in x and y variable or i can just in cartesian coordinates. but sir ,after parameterising that equation does it become a function or not?

    • @DrTrefor
      @DrTrefor  4 роки тому +1

      Well yes, but not in the same sense. It is a function from [0,2pi] to a subset of R^2. So not the graph of a function from R to R like you might be imagining.

    • @hikmatullahpakhtoon3694
      @hikmatullahpakhtoon3694 4 роки тому

      @@DrTrefor thank you sir.

  • @Falinaschi
    @Falinaschi 2 роки тому

    Dr. Bazett can you help me?
    How to parametrize a circle in 3D space from three points?

  • @sakhamurithanmai4442
    @sakhamurithanmai4442 Місяць тому

    Sir do you have any extra courses on calculus that you have done for even more understanding and questions...?

  • @jet468
    @jet468 2 роки тому +1

    thank you

  • @strigiformsW
    @strigiformsW 3 роки тому +2

    Step 1: Read textbook and put formulas into Anki.
    Step 2: Watch Dr. Trefor Bazett
    Step 3: Practice
    Step 4: Ace test

  • @PREMKUMAR-kv1zp
    @PREMKUMAR-kv1zp Рік тому +1

    Can you bring special course on Vector calculus.

    • @DrTrefor
      @DrTrefor  Рік тому +1

      I have a whole playlist on this!

  • @prashanthkumar0
    @prashanthkumar0 4 роки тому +1

    cool...
    vector calculus❤️❤️❤️❤️❤️

    • @DrTrefor
      @DrTrefor  4 роки тому +2

      Love vector calc so much:D

    • @prashanthkumar0
      @prashanthkumar0 4 роки тому +2

      @@DrTrefor
      yeah...
      but unfortunately i won't be able to give it some time... because nowadays im busy in teaching myself chemistry for board exam ...
      i have paused my coding also ...

    • @DrTrefor
      @DrTrefor  4 роки тому +2

      Haha yup have to pass the exams first:D

  • @turkishlegends4499
    @turkishlegends4499 Рік тому +1

    Which book you are following for this course??

  • @danieltambunan9717
    @danieltambunan9717 Рік тому

    Can someone explain, why the r(t) is described using cos(t) i + sin(t) j ? Why not using the circle formula x² + y² = radius instead?

    • @DrTrefor
      @DrTrefor  Рік тому

      It’s the difference between describing a road and describing a particular way that a car drives along the road, with for instance a velocity you can compute at each point.

  • @sabinacharya5117
    @sabinacharya5117 2 роки тому

    if position vector (r) represents the displacement, here in the curve(circle), r is normal to the curve. Similarly, if the derivative of r represents the velocity, here in the curve(circle) velocity is along the tangent to the curve. but displacement and velocity must be in same direction. Isn't it? I'm a bit confused over here...

  • @physicsmathsworld2033
    @physicsmathsworld2033 4 роки тому +2

    Awosome 😀❤️❤️❤️❤️❤️

  • @momen8839
    @momen8839 4 роки тому +1

    Awosome...I want to know history of vector calculus and its relation with physics. particularly (flux,curl,circulation)

    • @DrTrefor
      @DrTrefor  4 роки тому +3

      We're definitely going to have a lot of connections to physics, particularly a bit later in the series:)

    • @momen8839
      @momen8839 4 роки тому

      @@DrTrefor Is this any book present these conceptions with historical approach?

  • @krzysztofciuba271
    @krzysztofciuba271 2 роки тому

    OK.Hm, then what is the unit tangent vector (of any curve)? On the definition It (this unit for r (t), r'(t)=v) =: (vector)v (t)/v(t)/(magnitude and also (this unit for r(s);s-arclength= dr(s)(vector)/ds =((dx(s)/ds;dy(s)/ds;dz(s)/ds))and this =1 (on: ds=v(s)ds,then v(s)=ds/ds=1); /v(s)/=/v(t)/(the magnitude)-is it ok? I want t be sure! (I see a huge problem with the use of it or rather ignoring in the application to 4-d spacetime interval: the unit of (spacetime interval), or the unit of time parameter, esp. the unit of proper time- a huge mess in textbooks since....A.Einstein and P.Langevin's,AD 1911 lecture hoax! Again: the unit arc tangent vector and the unit of arclenght=1(or not?).It is just another geometric argument contra ...textbooks' idiocies (on "time dilation"'s interpretation.

    • @krzysztofciuba271
      @krzysztofciuba271 2 роки тому

      in few minutes i discovered even on UA-cam I am right (in Prof. Leonard's lecture); u missed in your lecture: dr(s)/d(s)=1. A proof of all 110 years of writings about "proper time" (definition, symbol)is a perfect BS without defining the unit of proper time and the unit arc tangent of spacetime interval/unit arclength!

  • @karthiks8665
    @karthiks8665 3 роки тому

    Please recommend me a book to learn vector calculus basics

  • @harshakontham4534
    @harshakontham4534 Рік тому +1

    love from iit bombay

  • @fotballfredrik1
    @fotballfredrik1 3 роки тому +1

    GOAT

  • @劉柏賢-m3r
    @劉柏賢-m3r Рік тому

    講得很好ㄟ 哥 謝謝你 我的超人

  • @daniyaaaqil371
    @daniyaaaqil371 3 роки тому

    Sir !
    I am not getting it can you please help me
    I am in hot water right now

  • @hubenbu
    @hubenbu 2 роки тому

    A huge new discovery: the domain of time is defined in terms of 0 and Pi, there must be some intrinsic connections between the physical concept of time and this mathematical notation Pi.

  • @delsonmcgriffin1989
    @delsonmcgriffin1989 2 роки тому

    4:22

  • @mortezakhoshbin
    @mortezakhoshbin 4 роки тому

    i cant thank you enough...

    • @DrTrefor
      @DrTrefor  4 роки тому

      you're most welcome!

  • @miguelposada3684
    @miguelposada3684 10 місяців тому

    love the video, audio a bit crucnhy prob the mic

  • @MATT123Gaming
    @MATT123Gaming 3 роки тому +1

    430 likes and not ONE DISLIKE?!?!

    • @DrTrefor
      @DrTrefor  3 роки тому +1

      That's actually a pretty sick ratio

    • @MATT123Gaming
      @MATT123Gaming 3 роки тому

      @@DrTrefor so sick that math breaks for it🤯

  • @syz911
    @syz911 Рік тому

    7:10 min What is the "ass?"

  • @antonia5423
    @antonia5423 8 місяців тому

    Vectors exam in a week. Let’s go B)

  • @captaingerbil1234
    @captaingerbil1234 3 роки тому +1

    I've never seen a video with such an impressive like/dislike ratio and I can see why.

    • @DrTrefor
      @DrTrefor  3 роки тому +2

      That actually is pretty crazy. If anyone ever dislikes this, I’m mad at you lol

    • @captaingerbil1234
      @captaingerbil1234 3 роки тому

      ​@@DrTrefor Well my good Doctor, may it remain forever untainted.

  • @Karen_Mkrtchyan_Horquri_Gandz
    @Karen_Mkrtchyan_Horquri_Gandz 9 місяців тому

    no kappa, explanation slapped

  • @peasant8246
    @peasant8246 2 місяці тому

    0:00 Holy shit, you look like the Omniman!

  • @ludwigimbihl4965
    @ludwigimbihl4965 Рік тому

    i love you

  • @aizazhussainaizazofficial1202
    @aizazhussainaizazofficial1202 2 роки тому

    outstanding sir , but if possible speak a bit slow......