Geometry - Transformation using matrices - Math
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- Опубликовано: 26 дек 2024
- Learn how to rotate a vector by 90 degrees using matrix form in this step-by-step tutorial. We start by defining vector A, which is drawn graphically, and then multiply it by the rotation matrix R to obtain vector B. We simplify the calculation by multiplying each row by the corresponding column and then adding the results. Finally, we draw vector B graphically, connecting its points to form the vector. Follow along with the video to learn more about rotating vectors in matrix form!
For more problems and solutions visit www.mathplanet.com
#mathematics #maths #geometry #matrices
This might sound weird but you're a nice looking guy to be teaching math .
Julia Twiford You should watch the comments on mathbff's channel.
hahahah, i am about to write that XD
What’s his name??!?😆😆😆😩😩😩
🔥 hotness overloaded
Looks like someone forgot to edit some clip out... :)
lol what
Lmao
This matrix form of a vector was new to me. Thanks.
"what have i done" hahahahaha but this was a really good video anyway, thanks!!
Hey Bro.. I'm from India.. These videos are interesting and really helpful.. Why don't you continue these..??
Thank you so much, this helped me a lot!
It's 90° anticlockwise?
"what have I done."
I love these videos! Could you please put them in playlists so if we wanted to stalk Algebra videos (or calculus, etc), your viewers could easily find them and play them back to back??
Why would the rotaion matrix (R) be [0, -1, 1, 0] ?
It's a given
It would be better that matrix is in this form: upper row = -1, -1 lower row = 2, 3
This is how it's in all books.
That way the identity matrix would be: upper row = 1, 0 and lower row = 0, 1
This makes students learn that multiplying the matrix A with identity matrix produces same matrix. So, student then "sees" that changing some 1 in the identity matrix to -1 produces transformation.
are the 90 degree rotation matrix values standard.. or only in this example
excellent explanation
He's hot af lol
bruhh
Bruh
yessss indeedddddd , i am just looking at him
thank you !!! i dont understand how it works but it works !
awesome, thanks
Just to add, the "rotation" is on y axis not x axis as I said but you get the point. x axis is mirrored and y isn't.
thank you soo much
very helpful
omg, hes cute
So the rotation is around the origin... would have been nice if you would've said that
probably the only comment here which is not about how hot he is
why did we do R.A instead of A.R? and I think it is cross product which is ''x'' instead of ' dot product '.'
Can you consider wearing blue? Maybe a polo :))
You were going to fast in this video, i wish you used lines to show wich numbers were from wich rows and columbs, and if you didn't just use 1ns and zero's i would have understood it better, becuase i didn't know wich zero or wich one your were talking about.
Did he get fired or something he hasn't uploaded in 6 years 😰
LMAO
He's been in Sweden working and teaching :)
@@ssmith968 what's his name
***** I know this was 2 years ago, but I thought decimal points are like periods, and go in the bottom. Every calculator I've used in my life has had a decimal point at the bottom.
Decimals separate the integers from the fractional numbers. In the US, decimal points are represented at the bottom, with a period symbol, whereas in Britain, they are represented in the center, with a period, and in other parts of the UK, they use commas to represent decimals.
Robot never heard of that comma method, and i live in UK
He seems to be learning and teaching in parallel.
Read my comments. It should be clearer because I think he made a mistake and it is clearer using my suggestion.
I thought negative one Plus negative one is negative two not positive one! This stuff is too tricky!
[cos(90), -sin(90), sin(90), cos(90)]
Correcto this was confusing till i saw your comment
your cute