Minors and Cofactors of a Matrix | Linear Algebra

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  • Опубліковано 29 лис 2024

КОМЕНТАРІ • 33

  • @WrathofMath
    @WrathofMath  4 місяці тому

    Help me produce this course by joining Wrath of Math to access exclusive and early linear algebra videos, plus lecture notes at the premium tier!
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    Linear Algebra course: ua-cam.com/play/PLztBpqftvzxWT5z53AxSqkSaWDhAeToDG.html
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  • @pipertripp
    @pipertripp 5 місяців тому

    The idea of the determinant is amazing. The computation... not so much. But it's good to go through it and learn the terminology and how it works.

  • @djdanzo206
    @djdanzo206 5 місяців тому +1

    subscribing to this channel was the best decision i ever made

    • @WrathofMath
      @WrathofMath  5 місяців тому +2

      Appreciate that! Hope you continue to find the videos helpful!

    • @PunmasterSTP
      @PunmasterSTP 4 місяці тому

      What was the second-best decision you ever made?

  • @김테디-t7t
    @김테디-t7t 6 місяців тому

    I love this linear algebra series! the process and the pronunciation is perfect to understand

    • @WrathofMath
      @WrathofMath  6 місяців тому +1

      Thank you! I'm working very hard to finish the series before summer is over!

    • @김테디-t7t
      @김테디-t7t 6 місяців тому

      @@WrathofMath I am looking forward it!

  • @aliix8215
    @aliix8215 2 місяці тому +1

    ur channel is a blessing thank u so much

    • @WrathofMath
      @WrathofMath  2 місяці тому

      Glad to help, thanks for watching!

  • @JamesMunene-k5c
    @JamesMunene-k5c Місяць тому

    On the last equation when evaluating four rows and columns could you explain where you accuse the ones in brackets (2-18)

  • @danielsoliz9544
    @danielsoliz9544 9 місяців тому

    Please keep uploading these videos are amazing

  • @cluczar
    @cluczar Рік тому

    best explaining on youtube

  • @spacemanmaths
    @spacemanmaths 12 днів тому

    so clear thx you

  • @felipevillanueva4683
    @felipevillanueva4683 Рік тому

    your videos are amazing. please keep posting

  • @lesedimabula7536
    @lesedimabula7536 8 місяців тому

    Wow, the last question did puzzled realllyyy my mind😅

  • @azarakhshsawmen127
    @azarakhshsawmen127 5 місяців тому +1

    “We’re going to go over minors”

  • @TrevorLiyao
    @TrevorLiyao 8 місяців тому

    Nicely done

  • @fungusCH
    @fungusCH Рік тому

    thanks big man

  • @user-wr4yl7tx3w
    @user-wr4yl7tx3w Рік тому

    For the last example, could you have chosen the second column?

    • @WrathofMath
      @WrathofMath  Рік тому +1

      Certainly! Any row or column will yield the same result.

  • @PunmasterSTP
    @PunmasterSTP 4 місяці тому

    Cofactor expansion? More like "Crazy; you're on a mission!"

  • @mcdemy
    @mcdemy 6 місяців тому +2

    tryna strick a chord and its prolly a minorrrrrrrrrrrrrrrr

    • @mcdemy
      @mcdemy 6 місяців тому

      thank you for the explanation helped alot

  • @krasimirronkov17
    @krasimirronkov17 Рік тому

    I dont understand how are you calculating determinanta without even defining what they are. And also cofactoring is not the true definition of the determinant

    • @WrathofMath
      @WrathofMath  Рік тому +1

      I said that we are calculating it using the cofactor expansion, so I'm not sure what the question is.

    • @krasimirronkov17
      @krasimirronkov17 Рік тому

      @@WrathofMath the determinant is the sum over all permutations of the numbers from one to n where each summand is the product of -1 to the power of the number of inversions in the permutations times a_1j . a_2j . .. a_nj where you substitute for j consecutively the values of the permutation from 1 to n

    • @WrathofMath
      @WrathofMath  Рік тому +1

      Yes, it is

    • @krasimirronkov17
      @krasimirronkov17 Рік тому

      @@WrathofMath yeah and my idea was that you first talk about cofactoring which is derived from the basic definition is the same as talking about the monotone convergence theorem without talking about limits that was my point. I dont want to crticize you i know it is hard to make yourube videos its just that almost nobody talks about the trie definition of the determinant

    • @WrathofMath
      @WrathofMath  Рік тому +1

      No I get you, I just had time to make this video so I made this one - haven’t had time for a thorough determinants video yet. When I do get to it, it will precede this one in the playlist - but i don’t create the videos in their final ordering as sometimes I have time for Video 4 but not Video 1, so to speak. I also create each video with two audiences in mind: the one who is watching my playlist, and the one who has found the video through search, which also has an effect on how each topic is presented.