In this video I show how to calculate the eigenvalues and eigenvectors of a 2x2 matrix A, and show how to find a diagonal matrix D and an invertible matrix P such that A = PDP^-1
I'm a simple mathematician. I see a Peyam video. I like the video.
@ServerDweller
3 жыл бұрын
I've got my end of years exams coming up and I can't believe I've just found a single channel that covers such a large portion of the content. I wish I had found it sooner. Thanks for the video!
@brianlamptey4823
5 жыл бұрын
I've tried looking for this stuff online, this is the first time I've found someone who has cared to go into the 'how'.
@jacobpickos733
Жыл бұрын
The MAN, the MYTH, and the LEGEND. Thank you, Sir!!!
@jososa5717
3 ай бұрын
Clearest, best video on the topic. You have a gift for teaching, thank you so so much Dr. Peyam!
@dolevgo8535
6 жыл бұрын
MAN i literally had my linear algebra test two days ago :( damn it! anyways thank you so much!
@MrCigarro50
6 жыл бұрын
So great, as always, clear and helpful. Thank you.
@eduardorivera508
6 жыл бұрын
Ooohhh! I'm excited for the Legend Of Zelda analogy!!
@Selenatorgirl544
2 жыл бұрын
Thank you for being so positive in every video! (please don't feel pressure bc I say that.) It's so obvious that you love math and bc of this energy of you I feel like I can solve any problem :) Thank you again!!
@drpeyam
2 жыл бұрын
Thank you!!! 😁
@adrianleranoz13
6 жыл бұрын
Me encantan tus vídeos! Sigue así!
@determinantmatrix9584
2 жыл бұрын
Really loved this video Thanks Dr. Peyam
@BaljinderSingh-tf2sn
4 жыл бұрын
amazing what a simple explanation to problem which looked very complicated!!!!!!!!!!! thanks alot !!!!! please keep uploading the videos you are doing amazing job!!!!!!!!!!!!!!! Great work
@unless14th
3 жыл бұрын
Thank you for this solution. It makes me clearly and able to prepare teaching materials easily. Your explanation is easy to understand for many people who are interested in Math.
@axollotl5813
5 жыл бұрын
short simple and clear. Well Done 👍
@bradvincent2586
4 жыл бұрын
wow this was insanely helpful!
@adelbennaceur7636
4 жыл бұрын
thank you sir i really like your energy
@jeongohseo3631
4 жыл бұрын
Thx for good lecture :) very helpful to me!!
@noahalexander3607
5 жыл бұрын
i love this man
@eliascaeiro5439
6 жыл бұрын
42 ! Great video as always.
@mathkaveli11
Жыл бұрын
Love your work
@akay37
5 жыл бұрын
Thank you so much!
@Titurel
3 жыл бұрын
Dr. P is one of my math heroes!
@raphaelcosta4352
5 жыл бұрын
Tks, i love it. Linear algebra is very beatiful
@jesuisjustinian
6 жыл бұрын
Just in time for my LA final today :D
@gvantsasakaruli9900
Жыл бұрын
You did something in such a short time that my professor has been struggling to explain for last two lectures with each being 1,5 hour long..
@azazahmed1842
2 жыл бұрын
aahhhhh sooo helpful thaaanks
@Gabbyreel
6 жыл бұрын
Thanks!
@nadeenyahya1384
5 жыл бұрын
Thankyou well explained
@yasseralg3928
4 жыл бұрын
I love you! I said it to you first before my soon-to-be wife!!
@drpeyam
4 жыл бұрын
Awwwww, what an honor! 🥰
@jacobvandijk6525
2 жыл бұрын
What are you hiding behind that permanent smile? Uncertainty? A cruel parent? Naivety? Real happiness? Or what?
@nawelouahrani9588
3 жыл бұрын
This guy is so cute, makes me want to learn more !!
@dominikstepien2000
6 жыл бұрын
That's great I've just started learning linear algebra, make more videos about LA, please!
@drpeyam
6 жыл бұрын
I have a whole linear algebra playlist if you’re interested!
@dominikstepien2000
6 жыл бұрын
Dr. Peyam's Show Thank you, I love your videos, keep up with great work!
@mohammedmadani7277
3 жыл бұрын
I love dr peyam
@wankar0388
6 жыл бұрын
Yeeaah !
@loveen3186
3 жыл бұрын
great teacher
@nouralhuda3530
3 ай бұрын
Thank you
@brandonpanuco8546
2 жыл бұрын
Thanks, im preparing to take my final.
@drpeyam
2 жыл бұрын
Good luck!!!
@jimnewton4534
10 ай бұрын
do you have an example video where you diagonalize a matrix with a 0 eigenvalue or with eigvenvalues of non-1 multiplicity?
@lulinchuan5281
Жыл бұрын
such a pity not being able to meet u at berkeley!watch your video for both math110 and ee120(matrix exponential)
@drpeyam
Жыл бұрын
I love 110
@eljonaballa6853
3 жыл бұрын
My exam is tomorrow and here I am btw thank you for this video
@cicciobombo7496
6 жыл бұрын
0:50 (A)li-A *TU TU TU TU TUM TUM TUM*
@DrJessicaGrogan
5 жыл бұрын
Are the signs on your null spaces for the Eigen vectors supposed to be switched?
@DrJessicaGrogan
5 жыл бұрын
Wait, seeing it doesn't matter because the difference is just scaling by -1
@plaustrarius
6 жыл бұрын
eigenventors, meaning that the output vector of the transformation is in the same direction as the input vector. that's implied when you said the matrix minus (eigenvalue) x (identity matrix) is another matrix whose null space is non zero. what is my transformation rotates all of the inputs? this means your eigenvalues would be imaginary, with the eigenvectors having imaginary components themselves. Do hyper complex numbers show up for higher dimensional transformations? I would assume so, since you would need more distinct eigenvectors for transformations of higher dimensional space. I hate calling them imaginary numbers, this is such a natural development and use of them, its hardly imaginary at all.
@omardelacruz9442
3 жыл бұрын
nice
@MrRomulocunha
5 жыл бұрын
I'm sure you know it, but just one trick to help people find eigenvalues faster in this case, as you can notice the sum of columns is 3, which indicates one of the eigenvalues is 3, and the main diagonal tells us the sum of the eigenvalues is 7, so the other eigenvalue must be 5.
@jagadishkumarmr531
Жыл бұрын
Wait, this works!! But how?
@MrRomulocunha
Жыл бұрын
@@jagadishkumarmr531by definition, Av=lambda*v. Assume you have a matrix which all entrances are a multiple of k. Then you can factor out the k so you will end up with a k*A which is exactly the definition of eigenvalues
@Contradi
6 жыл бұрын
I don't know if the Legend of Zelda video you talked about is up, but does the analogy have to do with the Temple of Time in Ocarina? I won't spoil the analogy if that's it, but I have a hunch.
@drpeyam
6 жыл бұрын
Will be posted on Thursday 😜
@Contradi
6 жыл бұрын
Dr. Peyam's Show can't wait!
@meh7272
5 жыл бұрын
Like to dislike ratio is quite large as of now [210/0]. Its so large that we can't even comprehend it XD.
@douro20
6 жыл бұрын
I haven't done anything with matrices in years...
@raichu56k
4 жыл бұрын
if eigen do it, so can you !!!!!
@jessiemanopo
6 жыл бұрын
What is the nul (matrix)?
@tofu8676
6 жыл бұрын
let A be a matrix then nul(A) (=nullspace of A or kernel of A) is the vectorspace of all vectors which multiplied with A would yield the nullvector. So if x is in nul(A) then Ax=0 (vectors)
@aneeshsrinivas892
3 жыл бұрын
Here we go eigen
@YorangeJuice
2 жыл бұрын
i never liked doing diagonalization (especially orthogonal diagonalization), problems because they take soooooo long and are so tedious
@holyshit922
6 жыл бұрын
... but not always diagonalization is possible Maybe something about Jordan form ? Jordan form is generalization of diagonalization
@drpeyam
6 жыл бұрын
There’s a video about that :)
@holyshit922
6 жыл бұрын
If you presented Jordan form correctly viewers should not have problems with diagonalization but i dont thik that 23 minutes is enough to present all cases
@Arycke
6 жыл бұрын
Jacek Soplica Implying he didn't present it correctly. Both videos are simple to follow along with, albeit my main study is mathematics so I am quite biased. These videos aren't meant to be 100% comprehensive of everything except the individual problems or derivations of formulae. E.g. this and the Jordan form video serve to stimulate the viewer to delve deeper, to learn the basic methodology and terminology, and cover enough of the basics to get the viewer going in the correct direction. Also, one could try their own problem and find out that their matrix is defective and then investigate that as that is a lengthy subject to cover for beginners in a short video. The title is "How to Diagonalize," not "A Treatise on the Entirety of Matrix Diagonalization and Generalizations Thereof."
@holyshit922
6 жыл бұрын
I saw both his videos and videos from MIT and i think that videos from MIT are recorded better Jordan form was deleted from MIT but i still can compare other videos I had basics of analysis (functions, sequences,series, limits,single variable calculus ) on my high school I read on forums that they have deleted it lately from teaching program
@Arycke
6 жыл бұрын
Jacek Soplica Well you are entitled to think that. I don't know why you would speak of your freedom to compare videos here where it is practically irrelevant. What you said is akin to someone saying "Burger King nuggets are better" while stuffing their face with McDonald's chicken mcnuggets. Additionally, I and many others have had just as many ( or more) courses in high school than what you've described on top of their own personal endeavors. I don't see what that has to do with your original statement, so I'll write this off as a miscommunication due to a possible language and/or cultural difference. We all like mathematics and that's the most important thing my boi 💜 let's just keep it copacetic and watch any math stuff we want as we do and enjoy Dr. Peyam's enthusiasm and intelligence. Ya? :3
@cameronspalding9792
5 жыл бұрын
I thought the characteristic equation was det(A-lambda I)
@drpeyam
5 жыл бұрын
They’re the same since we’re setting it equal to 0
@yuvalpaz3752
6 жыл бұрын
Do I have hope to get what that was promised... ?
@drpeyam
6 жыл бұрын
I’ve got videos lined up until mid-October, and that one is not one of them :/
@yuvalpaz3752
6 жыл бұрын
Guess I will have to watch your video till mid-October then
@cryptobeanbag7148
4 жыл бұрын
Funny guy
@Rundas69420
6 жыл бұрын
What's the difference between an algebra-student and a trigonometry-student? Algebra one makes sign mistanes where the trig one makes sin mistakes. I'm going to bury myself for that one xD
@justwest
6 жыл бұрын
1337 views and 123 likes, lol
@avdrago7170
6 жыл бұрын
When did you actually explain how to diagonalize a matrix?
@drpeyam
6 жыл бұрын
This whole process of finding eigenvalues/eigenvectors is called diagonalization
@6612770
6 жыл бұрын
I totally agree with AV Drago. This is the first session from Dr P. that I been left asking myself "Whaaaaaat?".
@AlessioAlessi
Жыл бұрын
You don't actually need to calculate that determinant for 2x2 matrices. You just need the matrix determinant and its trace and you can write down straightforward the characteristic polynomial 😌
@ib9rt
5 жыл бұрын
You didn't demonstrate that A = PDP^-1 at the end? More significantly, you didn't demonstrate why this procedure works. It's like doing math by rote, without understanding.
@drpeyam
5 жыл бұрын
That wasn’t the point of the video anyway!
@halbmannhalbsib9881
5 жыл бұрын
for intuition on the topic u can watch the videos done by 3b1b
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