Change of coordinates

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  • Опубликовано: 11 ноя 2024

Комментарии • 27

  • @drpeyam
    @drpeyam  5 лет назад +28

    Note: At the end, it should be:
    -3 1
    -5 2
    And the answer is
    -5
    -8

    • @chahine__8296
      @chahine__8296 Год назад

      I was getting crazy lmao, i had found -5 -8 from the start but I hadnt checked the comments, so i was doing it again and again to find my mistake. Phewww

  • @maxpercer7119
    @maxpercer7119 Год назад +4

    I like how you went through the 'slow way' first, which sets up the motivation for the transition matrix (and also helps define it), instead of just presenting the transition matrix unmotivated.

  • @jiyoonpark5022
    @jiyoonpark5022 4 года назад +7

    Every time I search youtube for a linear algebra video: “I hope Dr Peyam covered this topic..”

  • @Rundas69420
    @Rundas69420 5 лет назад +2

    The grade I got for my linear algebra 1 exam was not enough, so I hope that you will cover as much as possible that I can take this exam once more with a better understanding of the topics.
    You are just better at explaining than my professor or their scientific assistants.
    :D

    • @drpeyam
      @drpeyam  5 лет назад +1

      Thank you!!! All the videos are up already, just look at my playlists

    • @Rundas69420
      @Rundas69420 5 лет назад

      @@drpeyam I know that.
      Thanks man :)

  • @Behroozifyable
    @Behroozifyable 5 лет назад +4

    Yes I would say the same. The rref gives
    - 3. 1
    -5. 2
    And the x goes to - 5, - 8 but otherwise a fantastic video!

  • @Debg91
    @Debg91 5 лет назад

    I have just got a new mobile device and I am testing its resolution with your video. Math never looked so neat!

    • @drpeyam
      @drpeyam  5 лет назад

      Glad you like the resolution 🙂

  • @sugarfrosted2005
    @sugarfrosted2005 5 лет назад

    This is cute, you're essential doing a change of basis to the standard basis to get the transformation matrix.

  • @newtonnewtonnewton1587
    @newtonnewtonnewton1587 5 лет назад

    Wonderful doctor peyam

  • @wolframalpha8634
    @wolframalpha8634 5 лет назад +2

    Hey Dr.Payam!! 😊

  • @allstar965
    @allstar965 3 года назад

    Very informative!

  • @maxpercer7119
    @maxpercer7119 Год назад

    I just had one question, you defined the change of basis matrix P_ {C

    • @drpeyam
      @drpeyam  Год назад +1

      P_B is in another video, it’s just P E

    • @maxpercer7119
      @maxpercer7119 Год назад

      ​@@drpeyam ​ That makes sense. I drew up in Latex your argument for the change of basis matrix formula
      waa.ai/fLyZ.png
      (i keep wanting to make touch ups for the latex document, but its quite nice how elegant and tidy linear algebra is)

  • @aneeshsrinivas892
    @aneeshsrinivas892 3 года назад

    Dr peyam ive been wondering something about coordinate vectors with respect to a basis denoted the way it is.Why is the coordinates of [X] with respect to B denoted X_B shouldnt it be X^B so that the identity [Id]_B^C[X]^B makes more sense as the superscript and subscripts cancel just like how
    [T]_Y^Z*[U]_X^Y=[TU]_X^Z. They messed up on the notation here.

    • @drpeyam
      @drpeyam  3 года назад

      Pedagogically it’s nicer to write X_B, otherwise people think it’s exponention

    • @aneeshsrinivas892
      @aneeshsrinivas892 3 года назад

      B is an ordered pair of ordered pairs and i dont think raising vectors to vectors makes much sense here though

  • @yaaryany
    @yaaryany 5 лет назад

    Awesome🙌

  • @ssdd9911
    @ssdd9911 5 лет назад

    12:34 shouldn't the top right be |-3 1]?

    • @ssdd9911
      @ssdd9911 5 лет назад

      that means the answer is [-5]
      [-8]

    • @drpeyam
      @drpeyam  5 лет назад

      Indeed!