Meow Mix

So that you can do translations and stuff

Well here I'm specifically talking about 4D transforms where one coordinate is homogeneous

Oh it's just called a normal matrix

Does that make sense

If you have 3 vectors that form a triangle with normal $n$, the image of those 3 vectors under the linear map form a triangle whose normal is the image of $n$

So like

No

I had to use that in one of my 3d graphics programs

Adjoint?

Wait what are the matrices that preserve normals

Like take the cofactors and transpose and whatever

The one where you do like 4 steps

Apart from "when you calculate it it gives the identity matrix"

I wanna know why that way of computing inverse matrices works

Hi @Akiva

Anyways I come here because I have the opportunity to take linear algebra and diff eq next year at a local college and I don't know if that's a good idea. I know if I don't do that I'm not gonna have any math classes and I won't have any motivation to learn on my own

I suppose

Yes

And I think it's important to make it clear when you're telling lies @Semiclassical

No I was doing exercises

@TedShifrin Yeah I read up to the trig functions chapter

@Semiclassical Haha that's a good one

I got somewhat far, like chapter 16

How in depth are the lecture notes

I still remember everything I learned from Spivak's so I feel like I have a solid understanding of Calc I

I know but when things aren't rigorous I get the sense what I'm doing is shaky

Yeah :(

She is somewhat competent

It's not very rigorous and it kind of frustrates me

No they teach Calc III at my high school

But yeah they put me in Calc III this year so math is a bit of a challenge I guess too

And I think it's cool it just makes things super complicated

Everything in physics and chem seems like just a huge mess of a bunch of super tiny things interacting with each other at every point in time and properties just arise from that

Aren't those just solutions of Schrodinger's equation things?

I can't wait for that. I hate feeling like I'm so incompetent because I don't understand why something is the case

So I think it frustrates me in that aspect but it offers a unique challenge

it's*

And no matter how in depth you go, for a high school course there will always be a point where you just have to accept that that is just how things are instead of looking further into why that's the ase

Everything is just so complicated. Like there's so much more to something so simple like bonding than just "two atoms connect"

I think chem is really hard

Yeah AP chem is offering me a nice challenge

Junior year is stressful

School work

Lol but I have no time for recreational math anymore

I miss this place

Hiii

whats up gamers

yo

bye everyone

back to school tomorrow