Change of Variables & The Jacobian | Multi-variable Integration

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  • čas přidán 17. 12. 2019
  • You've reached the end of Multi-variable Calculus! In this video we generalized the good old "u-subs" of first year calculus to multivariable case with a multivariable change of variables. The trick is to set up a new coordinate system where the messy region before is now very nice, perhaps just a rectangle. We have to be careful though as we have to multiply our integrands by a scaling factors called the Jacobian. In this video I sketch the intuition behind the Jacobian and compute it out in an example.
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Komentáře • 274

  • @aadi.p4159
    @aadi.p4159 Před 4 lety +251

    Can I report this video for too eye opening

  • @imanabu5862
    @imanabu5862 Před 4 lety +315

    Quarantine isn't that bad when we have people like you helping us out, thanks sooooooo much 🌸🌸🌸

  • @pbillings808
    @pbillings808 Před 4 lety +81

    Greatly appreciated the second half as to WHY the Jacobian comes into play!

  • @mockingbird5919
    @mockingbird5919 Před 3 lety +113

    When you're a visual learner, videos like this are an absolute godsend

    • @DrTrefor
      @DrTrefor  Před 3 lety +9

      Thank you!

    • @aashsyed1277
      @aashsyed1277 Před rokem +2

      Watch veritasium's video .
      There is no such thing as visual learners

    • @ShanBojack
      @ShanBojack Před rokem +1

      ​@@aashsyed1277exactly

    • @herobrine1847
      @herobrine1847 Před 11 měsíci +1

      When you are any* learner

    • @ShanBojack
      @ShanBojack Před 11 měsíci

      @@herobrine1847 real

  • @Chomusuke71
    @Chomusuke71 Před 3 lety +40

    The Jacobian part in the end is pure gold

    • @treynoe4934
      @treynoe4934 Před 3 lety +1

      Hey can someone explain how to find the individual parts of the jacobian? I’m using this vid as a study guide for a test and I’m struggling to find the multiplicative factor

    • @treynoe4934
      @treynoe4934 Před 3 lety +1

      help please someone

    • @Chomusuke71
      @Chomusuke71 Před 3 lety

      @@treynoe4934 what do you exactly mean by the individual parts, elaborate a bit ill try to help

    • @Chomusuke71
      @Chomusuke71 Před 3 lety

      do u mean the functions inside the determinant?

  • @abhinavhampiholi54
    @abhinavhampiholi54 Před 4 lety +90

    I had taken multivariable calculus a couple of years ago and needed a refresher. This was great!

  • @lancelovecraft5913
    @lancelovecraft5913 Před 4 lety +32

    Excellent vid my friend. I took multivariable calc years ago and never really understood the jacobian or its purpose. Your explanation made it so simple and obvious. Thank u

  • @unsaturated8482
    @unsaturated8482 Před 4 lety +38

    no one can dislike this video

  • @ProCelestialEmpire
    @ProCelestialEmpire Před 9 měsíci +1

    Thanks a lot Dr. Bazett! I searched many materials and so far to me you are the only one that made the vectors transform part clear. Subscribed.

  • @GoutamDAS-ls1wb
    @GoutamDAS-ls1wb Před rokem +1

    Thank you Professor Bazett for an excellent video on the Jacobian. I am taking Multivariable Calculus (II) right now on edX offered by MIT but I always return to your videos because of your clear and lively teaching style. I look forward to many more. You make the videos entertaining as well!

  • @PinakCborty
    @PinakCborty Před 3 lety +1

    This is one of the most beautiful explanations on the intuition behind Jacobian I have come across on youtube. Thank you.

  • @Harry-ub2fv
    @Harry-ub2fv Před 4 lety +5

    That one dislike is given by a man who didn't even know the single variable calculus. Awesome explanation Sir!❤

  • @tomatrix7525
    @tomatrix7525 Před 3 lety +5

    This was absolutely top class as far as an explanation on an advanced topic can be. Great

  • @AmitKumar-ud7yq
    @AmitKumar-ud7yq Před 2 lety +4

    Never found mathematics this much interesting.. Thank you for all the efforts you have made for us sir.# respect

  • @Harry-ub2fv
    @Harry-ub2fv Před 4 lety +7

    This channel doesn't make me feel that I'm quarantined at home.:)

  • @briandwi2504
    @briandwi2504 Před rokem +2

    That was the last one of the whole series on Calculus 3. I watched every one and they were brilliant. Thanks for all the insights.

  • @99chartered
    @99chartered Před rokem

    I was about to google to find out the reason why we needed the Jacobian, your video presented is so beautifully it can't be beaten!!. Thank you so much !!

  • @proxy8918
    @proxy8918 Před 2 lety +1

    You are so good at explaining the intuition of things. You are a great teacher, thank you.

  • @walac
    @walac Před 4 lety +5

    Man, I was struggling to understanding the reasoning behind the Jacobian, but your video provided me the insight thanks a lot!

  • @maxpercer7119
    @maxpercer7119 Před 4 lety +13

    Jacobians tie together powerful ideas from linear algebra and calculus.

  • @jonasfarbo2661
    @jonasfarbo2661 Před 3 lety +2

    The motivation for the Jacobian explained with the u-substitution method from calculus 2 was very helpful for my intuition behind this topic. Thank you.

  • @kabascoolr
    @kabascoolr Před 3 lety +2

    I am actually shook. Whenever I watch videos like these, I expect to be disappointed. But when you started discussing the cross product, everything suddenly clicked.

  • @SAVO-hp4yq
    @SAVO-hp4yq Před 2 lety +1

    I love your attitude! You make Calculus so much more enjoyable to learn :)

  • @reinliu5090
    @reinliu5090 Před 2 lety +1

    This is the best tutorial on change of variables I've watched!

  • @fidelazuara5352
    @fidelazuara5352 Před 3 lety +2

    This is the absolute best explanation on the topic I've watched so far!

  • @emc2884
    @emc2884 Před 2 lety +2

    Thanks sir after exploring whole day in youtube to understand the jacobian your single lecture gave me a tremendous touch of the concept of jacobian
    Really sir you are genius and also have very good experience as compared to other professionals 🥰🥰🥰🥰

  • @mnada72
    @mnada72 Před 2 lety +7

    This channel is awesome 👌 You bridged the gap of the required imagination to understand the concepts by the brilliant use of animation. Explaining something that can be seen brings the beauty of Math. I am following all your playlist just to learn and see again this beauty which I missed before . Thank you 😊 Moving on to Calculus IV 👋

    • @DrTrefor
      @DrTrefor  Před 2 lety +1

      Thank you! Have fun in calc4:)

  • @youw6876
    @youw6876 Před 3 lety +1

    This is just soooo beautiful and mind-blowing! Thank you so much for the great explanation :)

  • @Bl1tzkr13g
    @Bl1tzkr13g Před 4 lety

    Thank you so much Trefor, your series of videos really helped me clarify some questions I had from Calculus Adam's textbook.. Keep up the great work and thanks for teaching! :)

  • @AJ-et3vf
    @AJ-et3vf Před 2 lety +2

    Awesome video! Thank you! Interesting how the Jacobian features into integration when I first learned it for using newton's method for vector functions and vector root-finding, needing to get the partial derivatives of the vector function F.

  • @drewmariani2964
    @drewmariani2964 Před 2 lety +1

    That explanation about the origin of the Jacobian factor is very helpful!!! Thank you!!!!!

  • @thisisntdana5222
    @thisisntdana5222 Před 2 lety +2

    Have my calc 3 final today and this is such an amazing review!! Thank you!

  • @nomachinesinthisroom
    @nomachinesinthisroom Před 2 měsíci

    Your explanations have helped me a lot, I am very grateful!
    Thank you very much for creating context at the beginning of each of your videos and for making such clear points!

  • @TheMrMEEEEE
    @TheMrMEEEEE Před 2 lety +1

    SOOOOOOO helpful. Thank you for taking the time to make this!

  • @SanjiZoroAnime
    @SanjiZoroAnime Před 3 lety +2

    Wow, I can't believe, you made this look so easy now ✨🌺, you are best 🙏

  • @Franko1411
    @Franko1411 Před 2 lety +1

    Thank you so much for this video. I wish my Calculus 2 classes were this straightforward.

  • @Rogue_Art
    @Rogue_Art Před 3 lety +1

    That part at the end was mindblowing. That literally tied everything together and I can't believe they never showed that between my professor's lectures and two textbooks!

  • @TN6625
    @TN6625 Před 4 lety +3

    A really informative explanation and presentation!

  • @foivossourlas
    @foivossourlas Před 2 lety +1

    What an absolute legend, thank you so much for this.

  • @maulaahmad2542
    @maulaahmad2542 Před 2 měsíci

    I was banging my head trying to understand the jacobian cuz it was introduced with the chain rule topic in my school. This video just made it very easy to undertand now. Thank you very much

  • @meredilkibaat7467
    @meredilkibaat7467 Před 3 lety +1

    very very helpful and I love the way you explain!!

  • @GeekyGothJussi
    @GeekyGothJussi Před 2 lety +1

    Always love your videos. Thank you!

  • @dtgiabao9915
    @dtgiabao9915 Před 2 lety +1

    Thanks you Dr Trefor! Absolutely amazing explaination :))

  • @bird9
    @bird9 Před 2 lety +1

    Thanks !
    you truly deserve more subscribers !

  • @sayannitdgp8957
    @sayannitdgp8957 Před 2 lety +1

    finally this topic got crystal clear.....thanks a lot 😊😊

  • @TheVigyanPodcast
    @TheVigyanPodcast Před 4 lety +1

    Finally i understand this J. Great video sir😊

  • @SuperDeadparrot
    @SuperDeadparrot Před rokem

    This guy is doing exactly what I used to do and get wrong all the time! I eventually learned that you don’t define u= f( x, y ), v= g(x, y ) but you imagine the BACKWARD transformation, x = F( u, v ), y = G( u, v ).

  • @mayanksinha1883
    @mayanksinha1883 Před 2 lety +1

    dudee explained so well sire!!! thanksss a ton

  • @iamlove1451
    @iamlove1451 Před 2 lety +1

    i really love your lectures :-) you are amazing . thank you.
    it will be more better if you do more example questions.

  • @olehborys1462
    @olehborys1462 Před rokem

    That was amazing, visualisation hits different from a table at university. Thanks!

  • @continnum_radhe-radhe
    @continnum_radhe-radhe Před 2 lety

    I never think that i understand this concept in such an easy manner 🙏🙏🙏

  • @shirsenduroy19-7
    @shirsenduroy19-7 Před měsícem +1

    Ohh , i was looking for the video ans now i have found it
    Nice explanation sir for the basic

  • @hienhoangminh1370
    @hienhoangminh1370 Před 3 lety +1

    it's just too great and your voice is amazing

  • @menoima9501
    @menoima9501 Před 3 lety +2

    underrated,underrated,underrated,underrated,underrated,underrated,underrated,underrated,underrated

  • @junyili-dh8be
    @junyili-dh8be Před rokem

    Love it, it makes a clear picture to me

  • @lucanicoletti4133
    @lucanicoletti4133 Před 7 měsíci

    You make amazing videos, bless you!

  • @sukranochani5764
    @sukranochani5764 Před 3 lety +1

    very nice sir, you solved my dought which was prevailing from years in mimd.

  • @CalculationStation
    @CalculationStation Před rokem

    Wow... Simple and best explanation 👌

  • @profarvind
    @profarvind Před rokem

    Sir, you are brilliant. Thanks a zillion.

  • @samwhite4284
    @samwhite4284 Před 2 lety

    at no point in my maths undergrad did any of notes/proffs explain the (actually simple) motivation for transforming with the Jacobian as well as this video - it was v enlightening... Thanks a lot!

  • @menoima9501
    @menoima9501 Před 3 lety +8

    this literally saved me from failing in my exams

  • @sdsa007
    @sdsa007 Před rokem

    I’m a visual learner too… but being a stupid visual learner i had to watch this twice, because the first time i was watching it in small screen mode… small screen mode confused me because the dark red font used for J was no J enough, so i thought it was a close bracket… and this distracted me to no end looking for an open bracket in small screen mode. Jeeeez… I was so relieved after switching to a larger screen to make up for the idiosyncratic font style for depicting J… But i am definitely reaching my end goal of getting better intuition on cross product, curl, determinants and Jacobian! Thank You!

  • @desaisandeep2070
    @desaisandeep2070 Před 3 lety +2

    your videos are very helpful !!

  • @agnivaroy5422
    @agnivaroy5422 Před 2 lety

    Just beautiful!!!

  • @MrBurstfire99
    @MrBurstfire99 Před 2 lety

    Excellently explained

  • @user-or7ji5hv8y
    @user-or7ji5hv8y Před 3 lety +1

    great content. excellent that you made the connection with change of variable and help see that connection. thanks

  • @scientist1905
    @scientist1905 Před rokem

    best explanation + nice visualization

  • @continnum_radhe-radhe
    @continnum_radhe-radhe Před 2 lety +2

    Thank you so much sir 🔥🙏🔥

  • @walidkerchouche1727
    @walidkerchouche1727 Před 2 lety +1

    Very good video thanks for your help.

  • @secretaryfig5364
    @secretaryfig5364 Před 8 měsíci

    AS SOON AS I SAW PARALLELOGRAM AND HEARD CROSS PRODUCT IT ALL CLICKED; THANKS MAN

  • @ayush9psycho
    @ayush9psycho Před 2 lety +1

    simply amazing...! this is such a wonderful explanation..!! I am really sick of the way they have been teaching this stuff at university..!!

  • @saralewis99
    @saralewis99 Před 3 lety

    Beautiful explanation!

  • @lucasfrykman5889
    @lucasfrykman5889 Před 2 lety +2

    9:10 that explaination was excellent. It seems stupidly obvious now why we scale with the jacobian that I'm kind of dissapointed I didn't try to heuristically derive it myself. Damn.

  • @HosRo4161
    @HosRo4161 Před 4 lety +2

    Thanks a million!

  • @prakhar3134
    @prakhar3134 Před 2 lety

    thanks a lot sir.. that was a great explaination

  • @christoskettenis880
    @christoskettenis880 Před 2 lety +1

    Very nice explanation!

  • @propoop6991
    @propoop6991 Před rokem +1

    this is such a good intuitive explanation, my textbook just derived it without any intuition lol

  • @uxjcjdid
    @uxjcjdid Před 3 lety

    Great video.excellent work.

  • @sheetalmadi336
    @sheetalmadi336 Před 2 lety +1

    I always feel you are underrated.

  • @ImJustSoOriginal
    @ImJustSoOriginal Před 3 lety +1

    Thank youuuuu! Got my 3rd year finals coming up and this really helped me get my head around it. :)

  • @mdyasir25
    @mdyasir25 Před 3 lety

    Completed the multivariable calculus for the first time with intuition and visualisations. Thanks Professor. Looking forward for Ode series.

    • @DrTrefor
      @DrTrefor  Před 3 lety +1

      Congrats on making it to the end!

    • @mdyasir25
      @mdyasir25 Před 3 lety

      @@DrTrefor Thanks ❤️❤️❤️

  • @soumapriyamondal3808
    @soumapriyamondal3808 Před 4 lety +1

    very nicely explained...

  • @liviumircea6905
    @liviumircea6905 Před 3 lety +1

    Brilliant explanation sir ! I got stuck on the subject trying to understand 3blue1brown's ideas..anyway these last minutes from this video made me to understand Grant's

  • @the_fundamental_theor3m
    @the_fundamental_theor3m Před 3 lety +1

    This blew my mind 🤯

  • @sudeshdas9998
    @sudeshdas9998 Před 3 lety +1

    Awesome explanation...
    Thank you sir...💜

  • @th2315
    @th2315 Před 10 měsíci

    masterpiece, amazing

  • @deepakmalhotra2880
    @deepakmalhotra2880 Před 3 lety +1

    Great video ! very well structured

  • @kylevebar3909
    @kylevebar3909 Před 3 lety +1

    Just finished playlist very good introduction to the material

    • @DrTrefor
      @DrTrefor  Před 3 lety +2

      Congrats on making it to the end!

  • @sibilakshman9575
    @sibilakshman9575 Před rokem

    Amazing video man

  • @redone9553
    @redone9553 Před 2 lety +1

    Thank you finally a rigorous explanation

  • @perspicacity89
    @perspicacity89 Před 8 měsíci

    Great video, thank you..

  • @georgebayliss6177
    @georgebayliss6177 Před 3 lety +1

    Watching this at 2am studying for tomorrow’s final. Thank You!

  • @hassaankhan9297
    @hassaankhan9297 Před měsícem

    Wow this helped a lot thanks

  • @HowToTechChannel
    @HowToTechChannel Před rokem +1

    Thank you for the amazing content!

  • @messididit
    @messididit Před 3 lety +1

    thank you so much!

  • @chevycecil233
    @chevycecil233 Před 2 lety

    I was really stuck on this concept for my class, but after this i now understand what i was doing wrong

  • @user-br6dw8kw2t
    @user-br6dw8kw2t Před 9 měsíci

    Well explained

  • @henRyL0507
    @henRyL0507 Před 4 lety +1

    So good👍🏿

  • @sukranochani5764
    @sukranochani5764 Před 3 lety +1

    Thank you.

  • @jahanvikathiriya9945
    @jahanvikathiriya9945 Před 4 lety +1

    Awesome!