Why You Should Give a Shit About Linear Algebra | Practical Linear Algebra (Lecture 1)

Linear algebra is the most useful thing you'll ever learn.

This is the first lecture in a course on practical linear algebra. I'll provide some motivation, go over some real-world applications, and explain the content and characteristics of the course.

Time for some hardcore learning.

This course is for anyone with an interest in any of these topics: math, science, engineering, physics, computer science, AI, computer vision, computer graphics, game development, robotics, aeronautics, or computational finance. Linear algebra is regularly used in all these fields.

[wavez]

So true that linear algebra is taught wrong.
I was excited to learn about linear algebra after watching 3b1b series on YouTube.

Once I started my class abt a month ago it was very different.

The lecture consists of the prof just proving theorems and stating axioms. There is no motivation behind why this theorem is important or how it will be used. To be fair he is a nice dude but he just sits and writes proofs on his projector for 2 hours.

Then we got weekly homework assignments which is 10x harder than the lecture. No one even knows where to start cuz there are no examples in lecture and the problems are all like “prove the intersection of these 2 sun spaces is also a sub space and find dimension”.

It can definitely be taught so much better but I think a lot of people who teach it don’t realize that most students haven’t even heard of linear algebra and have no idea why any of this works

[wrestlingscience]

Dude I’m so hyped after watching this. After doing a lin alg course as a cs requirement my biggest question was ok.. what was all of that even for.. I seriously look forward to your videos in this series as they are incredibly well done and, almost randomly will probably pick up steam when you least expect it, due to the quality alone

[odyssey]

Just found this while looking at calculus 3 videos, hyped for this as my linear algebra course at university was terrible and I’ve forgotten most of it. As a CS major, using numpy and python to show real world examples of the topics is just what I’m looking for. When can we expect Lecture 2?

[AmCanTech]

thank you so much! looking forward to your series

[rute]

I can confirm this Linear Algebra course did indeed blow my mind. Can we get a Japanese language tutorial next?

[goated]

Can confirm. Took it at my uni after hearing that it would be the most important math course I’ll ever take and by the end of the semester I was confused as to why. Still got an A but I don’t know jack about it if that makes any sense lol

[buttforce]

Dude awesome, thanks for making these!

[curtpiazza]

WOW! You whet my appetite for this subject! 😂

[davidmurphy]

Ok, this is preaching to the converted. I have DNNs of cars learning to drive which I coded without a library, 3d portals. I'll jump ahead I think.

But yeah, I accept your point, who cares less about formal proofs. It's just numberlines in more than one direction, obviously it works.

[bitbeee]

finally reached here after founding boring tutorials for day on Linear Algebra for AI/ML

[amorfati]

2:26 Yes it showed up in science behind crypto trading technical "indicators", and i came to the conclusion that, i would have to learn it, there is no other way around...

[alexnguyen]

Hello, when will the full lecture be available. Thank you

[Sorya-gfqw]

Why give a shit because it's in syllabus, simple bro 😂

[lakerowen]

Now I know linear algebra isn't a tool designed for torturing students. It is a tool to make life easier

[ajjbs]

Too much talk. Get to the point. don't bait, just go to the meat. I am 4:44 in and no nothing. Why not show algebra on a problem. I don't get your points and that is bad because I want to get your points