Gram-Schmidt process example | Alternate coordinate systems (bases) | Linear Algebra | Khan Academy

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Using Gram-Schmidt to find an orthonormal basis for a plane in R3

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Linear Algebra on Khan Academy: Have you ever wondered what the difference is between speed and velocity? Ever try to visualize in four dimensions or six or seven? Linear algebra describes things in two dimensions, but many of the concepts can be extended into three, four or more. Linear algebra implies two dimensional reasoning, however, the concepts covered in linear algebra provide the basis for multi-dimensional representations of mathematical reasoning. Matrices, vectors, vector spaces, transformations, eigenvectors/values all help us to visualize and understand multi dimensional concepts. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.

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I've been going through the playlist of linear algebra and am really thankful for all the work that you have put in into creating the series. I am not able to attend any kind of formal courses due to Visa restrictions, but your videos are helping me to continue the pursuit of my education until I can go to university. Thank you again.

onebenp
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Wow, Here I am using this video from 11 and a half years ago to study for a Numerical Optimization midterm. I cannot thank Khan Academy enough

domogami
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Linear Algebra final today! Here goes nothing...

Lortivar
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@ZaneMcCaig Gram Schmidt not only gives you a matrix in which every vector is a unit vector, but it also forms an orthogonal basis in which every vector is perpendicular to every other vector. Orthogonal matrices have some very useful properties (for example, orthogonal Q inverse = Q transpose; also, Q times Q transpose makes a projection matrix). This process may seem like a lot of work (and it is), but the result is very useful.

=Math

mathsvlog
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Can't we just get the formula and how to use it? 

willeett
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thank you, final in 8 hours, helped clarified things

petah
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Have you tried watching it at 2x speed?

Phagocytosis
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09:15 is wrong. The projection should include the u1 on the right.

Javlini
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How do you make an extra vector (u3 or v3) to this basis? Since there are three coordinates in the vector is it possible?

dossie
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The absolute value or distance of Y2 =root 6/2 .if I am wrong please correct .

sunitachettri
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Why do you assume x2 and x3 as free variables at the beginning of the video?

yonghuiliew
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I'm not really sure how using the f word relates with being in the university.

mynameismegaloser
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Facts about khanacademy - dont hate me


sam
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@petah604 Shit finals in winter? Mine is tomorrow =D

AlexanderAV
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Sometimes you just need to get to the answer

MannyFreshNovoa
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the program of Gram Schmidt Process for a dimension d*n

malekhakim
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I hate this Gram-Schmidt law thing... so confusing. and midterm is in 3 hours....

jxcxtxl
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@oneben

with this attitude, i doubt you`ll ever make it to university. ppl who use f words are normally not seen in next term classes. u my friend will not be seen anywhere close to unviersity.

once u fail acheive ur goal, u can always return to this screen and thank khansAcademy lol

sam
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Beat that guys, my final is after 1 hour and 35 minutes

A-
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i've been watching your vids for a while now....but seriously, I cannot understand you. You need to be more coherent while you speak, instead of going back here and there.
Otherwise, I follow your work perfectly

MoreKevinLiang