Matrix Transformations : reflections and rotations

[KJKP]

Absolutely the best explanation I've seen. I've been studying matrices for 6 months. Authors and profs and tutors are so focused on solutions and processes, they forget to explain what is actually happening; they forget what the math represents- the thing we really ought to know. Thanks!

[lukematthews]

I learnt more in this 3 minute video than an hour of further maths A level class. Thank you!

[studilicious]

literally watching this right before my igcse exam! you saved my life!

[connorgoldson]

This has totally blown my mind! Months of trying to figure out how matrices work, and it's all come together in this short video! So brilliantly explained and shown. Thank you so much!

[rishmiyeah]

I’ve got a further maths exam tomorrow, my friend sent me this and I feel more confident with matrices

[jakeminshall]

Great video! I’m just very confused because I thought matrices were displayed as (x, y) but in the matrices here it’s represented vertically. Why is this?

[rijanrai]

Thanks Dude, I have an exam tomorrow & hope this will help me!

[Lando-Calani]

For the people equally confused as me when seeing the last matrix problem for the FIRST time: (BxA)=(a, b, c, d).(a2, b2, c2, d2) = (a.a2+b.c2)= 0 ; a.b2+b.d2= 1 ; c.a2+d.c2= 1 ; c.b2+d.d2=0 => BxA = ( 0, 1, 1, 0)

[jordanli]

explained way better than 90% of the profs

[radwanahmed]

You deserve a nice blowie for that awesome explanation. thanks

[ILCA_Xtreme]

why didnt I find this earlier.. this was so helpful, thanks!

[dragonstone]

About tl write one of mg biggest maths exams rn.... this.. saves me... so much

[katiex]

i missed this lesson, so hopefully this’ll help me to understand

[SHADOWLEGENDDRAWS]

thx for the explaination, it helped me a lot

[asparagus]

I've got my A level tomorrow will update u if this helped me pass

[sullyh]

At the origin this makes sense, but what about when you have objects deeper in one of the quadrants? How do you tell the difference between reflection in the y-axis and rotation 180 degrees? Because with that one square in that one location, the two are indistinguishable.

[badboarder]

Thanks, it cleared up how to solve my homework.

[thegamingtaco]

I have a question, is there a particular matrix that will allow you to reflect a vector across this plane (x+y+z=1)

[SylvEdu]

WTF is even happening at 2:36. Can someone please explain his order of multiplying and why?

[dantowik]

cheers mate i swear to god why dont my study books explain stuff like this