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linear transformation matrices have ruined my life

Anonymous Thu 10 Oct 12:54:45 2019 No.11046988 View Reply Original Report

Quoted By: >>11046997 >>11047192 >>11047266 >>11050637 >>11050896 >>11050981

I swear to God, I've never tried so hard to succeed in something as with Linear Algebra
I watch the classes. I read the textbooks. I do the exercises. But I just can't seem to get it right. The problem is clearly with me; everyone else can do it.

Are there any accessible resources for studying LinAlg? How do I git gud at it?

Anonymous

Anonymous Thu 10 Oct 2019 13:07:42 No.11046997 Report

Quoted By: >>11047031 >>11050639

>>11046988
Have you watch the 3b1b series on linear algebra? It won't help you git good, but it might give you some good intuition

Anonymous

Anonymous Thu 10 Oct 2019 13:35:21 No.11047031 Report

Quoted By: >>11047395

>>11046997
It helped. But applying it to exercises is still a slog

Anonymous

Anonymous Thu 10 Oct 2019 15:26:25 No.11047179 Report

Quoted By:

Imma be honest you just need to spend more time with the exercises. I was given this advice before and it unironically helped. You have to sit down for 2 hours with a problem without going insane and then you have a right to claim that there is a problem with you.

Anonymous

Anonymous Thu 10 Oct 2019 15:32:34 No.11047192 Report

Quoted By: >>11049393

>>11046988
what exactly are you having problem with?

Anonymous

Anonymous Thu 10 Oct 2019 16:16:38 No.11047266 Report

Quoted By:

>>11046988
Just tell us what you don't understand. This topic is as important as it is basic; it is the language that is used everywhere, quantum mechanics, statistics, econometrics, you name it.

Anonymous

Anonymous Thu 10 Oct 2019 17:10:33 No.11047395 Report

Quoted By:

>>11047031
Honestly, keep slogging. Do questions you've already done even if it feels silly. Keep doing questions until you can see the answer while still reading the question. It's not cheating if the only reason you know is because you've done the question before, because it still shows that you've learned how to get to the answer

Anonymous

Anonymous Fri 11 Oct 2019 09:42:19 No.11049393 Report

Quoted By: >>11050140

>>11047192
Right now? Change of basis and transformation matrices
But the thing is that I want to create some independence when studying. Most of the time, I get lots of questions that would be bothersome for others to answer. If I come here every time, I'd personally flood the board.

Anonymous

Anonymous Fri 11 Oct 2019 17:53:21 No.11050140 Report

Quoted By:

>>11049393
That is unironically a very profound thought. The whole point of school education (and, arguably, college/university) is to gain skills that will help you down the line. The two major skills are socializing and the ability to either solve problems or understand where to look for the solution or how to learn to solve them.

Regarding linear algebra - the understanding of this area depends on how good is your understanding of vector spaces.
Draw a vector on a plane, say (0,1) pointing upwards. Do you understand that the vector, as a mathematical object, exists outside these numbers (0,1)? It is just its representation in a particular basis. We can choose any basis we like (there are infinitely many of them) and the coordinates will change, but our vector does not - it's still the same vector.

Still, it would be cool to know its coordinates in the new basis. Well, find them! Manually, don't look in the textbook. At first you can just choose another basis explicitly, but then you can try a generic basis.

Anonymous

Anonymous Fri 11 Oct 2019 20:48:42 No.11050637 Report

Quoted By:

>>11046988
I feel you. By far one of the harder classes Id had. What helps is reading more advanced texts (as absurd as it sounds); gaining tuition requires you to go beyond your class and learn where all the ideas come from. One good text (very elegant indeed) is axler. Tao also has decent lecture notes on his site.

Anonymous

Anonymous Fri 11 Oct 2019 20:49:03 No.11050639 Report

Quoted By:

>>11046997
Just fucking lol

Anonymous

Anonymous Fri 11 Oct 2019 22:33:51 No.11050896 Report

Quoted By:

>>11046988
I'm taking linear algebra right now and I find it extremely intuitive. I got a perfect score on my midterm.
Basically, it all comes down to geometric intuition, knowing equivalent statements (not memorizing them, but understanding why they are related, usually geometrically), and just doing exercises.

Anonymous

Anonymous Fri 11 Oct 2019 23:06:57 No.11050981 Report

Quoted By: >>11051934

>>11046988
The one tip that most helped me ever with any class was to try your hardest see the ideas being presented as fun thoughts and the problems as fun games with said fun thoughts.
I might sound like a colossal faggot but, seriously, if you learn to "play" with the concepts you have you will get so much better at everything that you wont believe it.
Its just a mindset

Anonymous

Anonymous Sat 12 Oct 2019 06:19:59 No.11051934 Report

Quoted By:

>>11050981
>Fun thoughts
>Fun games
Could you elaborate? Or give an example

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