Lec 17 | MIT 18.06 Linear Algebra, Spring 2005

[NganaJHone]

I am very happy to see the vidoe Orthogonal Matrices and Gram-Schmidt. from you, hopefully the others also are happy for You

[Ondelendo]

Steady I Really Like This Video Orthogonal Matrices and Gram-Schmidt

[bebeheuy]

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[willamricard]

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[imegatrone]

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[bundawartini]

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[anakmudajaman]

after i watched this video Orthogonal Matrices and Gram-Schmidt., my insight is very open because the video is very good to give information

[SabinaSarairq433]

cool hab was geiles entdeckt haha

[Blanco02]

great teacher, i wish i could be there... :(

[agapitoflores001]

Nice lesson! Worth watching.

[scrappyOoOcoco]

lucky we could be able watch it before its going to be disconnected~ but well hope his vedios will last here forever.

[akhil089]

thanks professor gilbert

[ChelinTutorials]

best gram-schmidt lecture i saw.

[Yakeyglee]

At 33:00, why does he write ((A^T b)/(A^T A))A instead of ((A A^T)/(A^T A))b? I thought the projection matrix was (A A^T)/(A^T A)?

[pelemanov]

Capitals for vectors are really confusing...

[hypnoticpoisons]

is isn't a big deal - that's schmidts contributeion:D

[sdubs420]

I find this difficult to masterbate to

[PhilOrzechowski]

I enjoy Prof Strang's videos, but I'm not as impressed as others. I have yet to take a class of Linear Algebra so these videos make up 100% of my knowledge of this subject. Maybe my handicap is having a negative impact on my opinion of him. Often his explanations are sloppy. He'll begin one sentence/idea and before he finishes it, he's jumped into several others (verbally and visually). But I seem to be alone in this as nobody else feels confused. It must be me.

[FariFure]

@PhilOrzechowski yeah, probably it's you. because i find his lectures perfectly coherent.

[e5k1m0]

His lectures are so much better than the ones in my university. Here they like to copy everything word by word from same handout we already have.

[TheElephantOpera]

haha his reaction at 40:20 when he realizes ATb/ATA is 3/3 is priceless.

[TheRjay90]

He made a mistake at the end. The first input (1,1) in the matrix R should be: R(1,1)=q1Ta. NOT R(1,1)=aTq1. I have his fourth edition book, and on page 181 (section 3.4) he defines R the way I did above.

[anuj68]

It doesn't matter, the inner product is commutative, i.e.: you can change the order and get the same result.

[eltongabinghiman]

@anuj68 estas equivocado, el producto interno no siempre es conmutativo, ej: cuando trabajas en espacios vectoriales complejos.

[BanderHM]

@TheRjay90 That's right and it's even in the 3rd edition (q1T . a) but is it a mistake? I don't believe so because q1T . a = aT . q1 and both lead to the same constant. Try it :)

[ru0107]

His lectures are so much easier to understand than his book!! Thats probably why he teaches and doesn't just author books.

[kitman]

@ru0107 I agree with you. For me, his book is a little bit messy but his explanations in class are more clear than everyone.

[MBwolt]

@ru0107 I couldn't agree more !