Recovering a matrix

[@lilyholland4434]

This video was such a life saver! Thank you for explaining the concept in such an easy to understand way, I was absolutely struggling before I came here!

[@drpeyam]

😊

[@richardfredlund3802]

That's really nice video, encapsulates the dependencies and independencies in the matrices. So it's easy to see we can put values in the pivot colums and get full matrices back.

[@dougr.2398]

Richard Fredlund columns.... English is quirky and so is “auto-(in)correct”!

[@drpeyam]

Typo: Change 9 to 10 and 33 to 36 (otherwise the columns are linearly dependent)

[@lauri268]

Thank you very much for this. I was struggling with a similar problem for hours. I'm still trying to grasp it so I have a question: Would I be correct if I said that the matrix can be recovered unambiguously because: - The column vectors of A corresponding the pivot columns of A' form the basis of a column space of A - Thus, the other column vectors can be written as the linear combination of the basis vectors in EXACTLY one way.

[@YaaayaaaYEET]

This really helped I was really stuck!

[@blackpenredpen]

I found A in the thumbnail!

[@drpeyam]

Good job! I hereby give you a PhD in Linear Algebra 😜

[@blackpenredpen]

@@drpeyam hell yea!

[@АлексейШубин-н8й]

Hey. help me figure out the Euler-Maclaurin formula. respond, please.

[@drpeyam]

The what?

[@АлексейШубин-н8й]

euler maclaurin summation formula

[@АлексейШубин-н8й]

Please please

[@drpeyam]

Interesting, never heard of it!

[@АлексейШубин-н8й]

I reviewed the entire Russian Internet, but did not find any clear evidence ((((

[@eforeffort299]

wow this is so cool :D

[@AceHardy]

💻📱

[@pieface5448]

Your initial three vectors are not linearly independent so they cannot be the pivot columns of an RREF matrix

[@drpeyam]

Oh yeah! Good point, hahaha, but you get the idea

[@dougr.2398]

Ah, you snuck in a quick phrase at the beginning... “you actually can..... if you have some partial information “.... the last phrase said really hastily(!)...... I’d say that only a “family” of matrices can be supposed, without additional conditions.......can we classify matrices by row-echelon characteristics? (Naive question--I ought to know better by now! ;) )

[@박민수-l3v]

"개안"