Multiplying a matrix by a matrix | Matrices | Precalculus | Khan Academy

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  • เผยแพร่เมื่อ 5 ส.ค. 2013
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ความคิดเห็น • 88

  • @user-mt9ux2di6u
    @user-mt9ux2di6u 3 ปีที่แล้ว +150

    I was struggling to understand how to multiply matrices by some unclear explanations, this helped a lot, thank you!

    • @justsomeguy7921
      @justsomeguy7921 3 ปีที่แล้ว +1

      Karteek Ch I have no idea what I am doing with matrices- I was never taught how to multiply them and am expected to know exactly how to do it now.

    • @Hello-ww7xr
      @Hello-ww7xr 3 ปีที่แล้ว

      hey queen. you did it again. congrats on being a סקסי כלבה

    • @nikos4677
      @nikos4677 4 หลายเดือนก่อน

      ​@@justsomeguy7921This comment was posted 3 years ago. 3blue1brown playlist is older

  • @Umirua
    @Umirua 5 ปีที่แล้ว +134

    Finally, geez! See, book? Was it so hard to just show this?

    • @CubySteve
      @CubySteve 3 ปีที่แล้ว +2

      hahaha

    • @clareb1565
      @clareb1565 3 ปีที่แล้ว

      I love matrices. I dont really I just solved a question on composing them so Im feeling pretty pleased with myself right now.

    • @NeroLung
      @NeroLung 2 ปีที่แล้ว

      @@clareb1565 😂😂😂

    • @YO-BIZZY
      @YO-BIZZY 3 วันที่ผ่านมา

      yeah cos this video is like hundreds of thousands of images and videos are more interactive than a book. Book is limited in this aspect

  • @minatochannel934
    @minatochannel934 4 ปีที่แล้ว +58

    Skipping My Online Classes, Just Complicated And Confusing,
    THANK YOU KHAN ACADEMY! 💓
    Love From Pakistan💚

  • @tuhocr
    @tuhocr 7 ปีที่แล้ว +8

    thank you very much. I already knew how to multiply but for a long time, I forget. now you help me remember this easily.

  • @shireenshahizad2337
    @shireenshahizad2337 6 ปีที่แล้ว +9

    Thank youuuuu!
    I love your videos - they're so helpful and the ones that I don't need to know for school are also very educational and interesting :)

  • @caspervalente4227
    @caspervalente4227 6 ปีที่แล้ว +7

    Thank you so much! I was struggling on a problem like this for over an hour!!! Thank you!

  • @TechSpree1
    @TechSpree1 3 ปีที่แล้ว +2

    This helped me to understand matrices far easier than the textbook, thanks for posting!

  • @syoukhan
    @syoukhan 6 ปีที่แล้ว +6

    sending love from Italy, thank you so much!

  • @RayhaanKhan-mu4qu
    @RayhaanKhan-mu4qu หลายเดือนก่อน +1

    wow! so ez!
    I actually though this is taught in 11th but thanks to your video i can learn this in 9th!

  • @kony512
    @kony512 11 ปีที่แล้ว +161

    What is ED? Words only a man should ever ask.

    • @divyoroy9056
      @divyoroy9056 4 ปีที่แล้ว +4

      Robert Dixon just the product of the matrixes

    • @MrSpruce
      @MrSpruce 4 ปีที่แล้ว +27

      @@divyoroy9056 Oof you missed the meaning a bit

    • @minatochannel934
      @minatochannel934 4 ปีที่แล้ว +20

      Its Erectile Dysfunction😂😂

    • @alfredomulleretxeberria4239
      @alfredomulleretxeberria4239 3 ปีที่แล้ว +5

      Encyclopedia Dramatica?

    • @thegreensamurai2773
      @thegreensamurai2773 3 ปีที่แล้ว

      @@alfredomulleretxeberria4239 Christian W Chandler

  • @punavmirlekar
    @punavmirlekar 7 ปีที่แล้ว +3

    great its awesome. ! just what i needed inwas I was stuck in a problem. i got the solution 🙌🙌

  • @botrmano6154
    @botrmano6154 6 ปีที่แล้ว

    thank you this was very helpful and easy to understand you are a great teacher

  • @zainabshaikh4831
    @zainabshaikh4831 3 ปีที่แล้ว +2

    thnks so wonderful explaination.

  • @cavier828
    @cavier828 3 ปีที่แล้ว

    This video has helped me so much. Ive watched it countless time

  • @peshkatboti5067
    @peshkatboti5067 ปีที่แล้ว

    Simple and clear, thank you sir…

  • @acevedo230
    @acevedo230 10 ปีที่แล้ว +2

    por favor en español para los latinoamericanos que necesitamos mas conocimiento gratuito ya que la falta de estudio no es por falta de interes es falta de acceso a la informacion

  • @HaveYouSeenMyGardens
    @HaveYouSeenMyGardens 11 ปีที่แล้ว +51

    I now know Kung-Fu.

  • @OfficialSFD
    @OfficialSFD 9 ปีที่แล้ว +1

    Thank you. So much

  • @nermincavadova4664
    @nermincavadova4664 3 ปีที่แล้ว +1

    Thanks

  • @sheepbow909
    @sheepbow909 4 ปีที่แล้ว +1

    Thanks for the help

  • @gerudoking3180
    @gerudoking3180 3 ปีที่แล้ว +1

    The way he says 'us humans' makes me wonder if he's an alien

  • @YO-BIZZY
    @YO-BIZZY 3 วันที่ผ่านมา

    gem from 2014

  • @rasull
    @rasull 10 ปีที่แล้ว +1

    This takes me back to uni, liked doing matrixes was fun

  • @kishoregangisetty6451
    @kishoregangisetty6451 6 ปีที่แล้ว +1

    Thank you sir

  • @bmller6957
    @bmller6957 ปีที่แล้ว

    Very good video, but when explaining something like this, you should never use the same numbers in the matrix. It just makes it more difficult to understand. But using different numbers everywhere makes it very easy, :)

  • @those.gamers.
    @those.gamers. 4 ปีที่แล้ว

    I know math has no age but it's 2020 thank you very much

  • @NavjotSingh-ns8bc
    @NavjotSingh-ns8bc 2 ปีที่แล้ว

    it's like crying out bankaaiiii! in the last moment.

  • @DhwanitSheth
    @DhwanitSheth 4 ปีที่แล้ว

    It solved all of my math😎

  • @tumusiimegloriax
    @tumusiimegloriax 3 ปีที่แล้ว +1

    Thank you

  • @anupamkumar1901
    @anupamkumar1901 3 ปีที่แล้ว

    Nice!

  • @emanelmhlawy6331
    @emanelmhlawy6331 4 ปีที่แล้ว +1

    Thanks we love you I do

  • @tahaurkhan7492
    @tahaurkhan7492 ปีที่แล้ว

    Oh wow this video is 9 year ago but explain is too solid

  • @seanclark6554
    @seanclark6554 2 ปีที่แล้ว +1

    thanks salman kahn u a g for that

  • @NoxuzBlog
    @NoxuzBlog 11 ปีที่แล้ว +1

    OMFG THE MATRIX

  • @f.r.i.e.n.d.s9775
    @f.r.i.e.n.d.s9775 3 ปีที่แล้ว

    Thank you so much

  • @DeputyDrei
    @DeputyDrei 2 ปีที่แล้ว +1

    thanks g

  • @mira_sagittarius_a
    @mira_sagittarius_a 3 ปีที่แล้ว

    oh my lord thank you so much

  • @JaiBharti-bk1gk
    @JaiBharti-bk1gk 6 หลายเดือนก่อน

    ❤❤ from India...

  • @diyasudheer9058
    @diyasudheer9058 ปีที่แล้ว

    Thank you ❤

  • @rubinatabassum137
    @rubinatabassum137 2 ปีที่แล้ว

    Great

  • @fishswag6093
    @fishswag6093 3 ปีที่แล้ว +1

    I agree with The_Pyromancer Why IS IT hard for the our school books to show how to do this and save us from going onto youtube and searching it up anyway DONT FORGET TO SUBSCRIBE TO KHAN ACADEMY BECAUSE THEY DO WHAT THE BOOK CAN'T

    • @jonahnichols2158
      @jonahnichols2158 ปีที่แล้ว

      Because books are only meant for one kind of learner. Not everyone can learn from a book.

  • @apex7220
    @apex7220 4 ปีที่แล้ว +1

    how do we multiply a 3*2 matrix with a 2*2 matrix?

    • @yousraelangouri9986
      @yousraelangouri9986 4 ปีที่แล้ว

      Not it is not possible (unidentified)

    • @brendanphoebe3357
      @brendanphoebe3357 4 ปีที่แล้ว +1

      @@yousraelangouri9986 isn't it? In the video he says that the columns of one and the rows of the other must be equal. The two of the columns and the two of the rows are equal.

    • @davidhovey1746
      @davidhovey1746 3 ปีที่แล้ว

      Same thing probably, but you do an extra row at the bottom

    • @zethmoreland2017
      @zethmoreland2017 3 ปีที่แล้ว

      I'm trying to find that out rn but the answer will be a 3x2 matrix

  • @kimothefungenuis
    @kimothefungenuis 2 ปีที่แล้ว

    I didn't know it was possible to snip back in 2013

  • @dancenasticsog
    @dancenasticsog ปีที่แล้ว

    I finally get it

  • @shahriarsiddiqui8359
    @shahriarsiddiqui8359 9 หลายเดือนก่อน

    I think I should've had studied more for tomorrows exam

  • @Lauderdalesfinest954754
    @Lauderdalesfinest954754 11 ปีที่แล้ว

    Magic Numbers..

  • @TheOnlineStudents
    @TheOnlineStudents 3 ปีที่แล้ว +1

    I just uploaded a video about multiplying matrices, if anybody needs additional help ^^

  • @superduperr27
    @superduperr27 3 ปีที่แล้ว

    Anyone else here who was supposed to do it in Java but wanted to understand how it worked in the first place? xD

  • @coolkid-wk3kh
    @coolkid-wk3kh 2 ปีที่แล้ว

    bruh im retaking algebra 1 in high school and they got me doing precalc work?? 💀

    • @narwhalguy3829
      @narwhalguy3829 2 ปีที่แล้ว +1

      I’m in precalc trust me this is not precalc work

  • @AdityaSharma-hx4ui
    @AdityaSharma-hx4ui 2 ปีที่แล้ว

    No one is telling the concept why we are doing multuplication like this.

  • @sebacool8
    @sebacool8 5 ปีที่แล้ว

    I love you

  • @TiredNSleep
    @TiredNSleep 6 ปีที่แล้ว

    Hi

    • @owhbfl
      @owhbfl 3 ปีที่แล้ว

      hello

  • @GreedHazbin
    @GreedHazbin 2 ปีที่แล้ว

    By me being here at this time while also being the 68 comment but also isn't because time and space is the same thing because matrix is matrix but also isn't but is or a simulation of endless loops/ possibilities/ also and or pewdiepie in the end but also adam is also but isn't is or aman or probably a man or infinity

  • @OctacoreIsAFK
    @OctacoreIsAFK 3 ปีที่แล้ว

    This man sounds like YandereDev

  • @uknome2754
    @uknome2754 3 ปีที่แล้ว +3

    I am sure there is no Indian here except me..(

    • @BoyzzWorldGaming
      @BoyzzWorldGaming 2 หลายเดือนก่อน

      Why do you think so?

    • @CyBrOnE3
      @CyBrOnE3 2 หลายเดือนก่อน

      ​@@BoyzzWorldGamingyou are late

  • @priyanisar7524
    @priyanisar7524 2 ปีที่แล้ว

    @mrbeast @pewdiepie @DanTDM @skeppy not that hard to learn matrices, is it ?

  • @hiratimilsina6116
    @hiratimilsina6116 3 ปีที่แล้ว

    Are everyone here nerds Just curious?

  • @zenishathing1465
    @zenishathing1465 3 ปีที่แล้ว

    Thanks