Matrix vector products | Vectors and spaces | Linear Algebra | Khan Academy

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Defining and understanding what it means to take the product of a matrix and a vector

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I was looking for a Turkish video but I never found a nice and clear one so I found this video. This video really helped my finals Thanks!

ezgi

These are all the basics of what you need for the more advanced courses. They are like introductions for continued studies.

Syeal

I think at 1:03, it should be am1 not amn

mengs

I'm taking differential equations two years after taking linear algebra, this is a great refresher. Thanks!!

audreym

Just noting that bn at 8:16 should be bm.

clarencehung

KHHAAAANNN!!!
You're gonna have to be less abstract Khan.
You're gonna have to come down here to our level Khan!

archentity

not what i was looking for but still great video! =]

purenight

Thanks, this helped me on my assignment.

Jackyxz

14:16 This should be a1(Transposed).X and a2(Transposed).X because you can't dot product a column vector with a column vector right?

HarshvardhanKanthode

Gracias por la explicación desde colombia me permitiste ver diferentes puntos de vista para aplicar la multiplacion de un escalar por una Matriz

valeriagullo

I live in Belgium and about everything in these vids is what I either saw in secondary school or first semester of university (phisics and astrology).

Wouterdobbels

at 19:35 why the product Ax can be interpreted as a linear combination depending of the x vector?, depending on the number of rows or columns or maybe if the components are not linear like x but cuadratic like x^2?

smc

Why there is a need to convert the matrix as vectors and that to by dividing the matrix as column vectors , Pls anyone can Answer my doubt over here.

jaiganeshbaskar

Great teacher..clear voice and pronunciation..clear instructions

rasikajayathilaka

The last part doesn't make sense as Ax(x is vector..I cannot write it here) has to have (4x1) component not a number. To make it a sense, it should be told like the sum of whole component of Ax(not just Ax) is linear combination of row vectors of A. I came here on youtube from Kahn academy to raise this question.

ekdkseho