I have tried this question 2 times and the right answer is always the negative of what I get, why??? what am I doing wrong here? please explain why it should be the negative of the value.
My Calc 3 teacher was horrible. I definitely forgot most of the things in that class because I basically just studied the day before for the final exam which made me barely able to get a B.
I used to be really good at Calculus and I got a 5 on the AP Calc BC exam. Before that, I took a Calc one class at a community college. But I haven't done any kind of calculus for more than 9 months.
The last math class I took was Discrete Math during the spring semester.
I did zero math during the summer because I hated doing math after that class.
So my brain is not used to doing math anymore and I feel like I am very underprepared.
I'm nervous cuz the fall semester is about to start soon and I gotta do Linear Algebra and I don't know how difficult it will be...
I don't talk about the complicated and hard questions, I am talking about the laws and the topics to fully understand linear algebra not just the basics, I am studying 3d programing and wandering If Khan academy will cover all I need in linear algebra and calculus.
Hi,
So two-part question here:
Part 1: What does it mean when a question asks you to express one column matrix as a linear combination of another matrix?
I've watched the explanation videos, but I have no idea what's going on. I know the two original matrices should be written as one augmented matrix and then you have to get it down to RREF form but from there I'm pretty lost.
Part 2: I'm generally very lost in this basic linear algebra class. What are the best online resources for this material? Specifically, what would y'all recommend that's concise and engaging (I have a terrible attention span)?
Thanks!
Hello guys. I don't know if this is the correct subreddit but I want to know if there is a book that can teach me basic math to linear algebra.
Although I am aware that khan academy exist. I prefer to learn through reading books.
So im trying to get ahead on some algebra and i have a question, given a system with only linear equations how can i evaluate directly from the matrix/system if the system is impossible, determinated or indeterminated.
I will be doing linear algebra next year and I am trying to prepare because I will have a pretty heavy course load. I've went through calc 1 and most of calc 2 and the concepts there are fine but now I would like to know the best way to prepare for linear algebra. I have the textbook "Linear Algebra Done Right" in PDF form and I'm wondering if anyone would recommend a different text book and if they know if this textbook covers enough of the material that is likely to be taught in my linear algebra class. I will be completing the course in 3 weeks as opposed to 11 so for this reason I will definitely need to be as prepared as possible.
I wanted to start learning AI from the absolute basics like how to make neural networks from scratch, before learning to use the already made models life tensorflow, pytorch etc. To which I realised that I have to know some maths like linear algebra, probability distribution and differentiation. On searching of best resources of linear algebra for AI, the most suggested resource that came up was from MIT's opencourseware by Prof.Gilbert Strang.
I have been trying to understand his videos since last 3 days. I could hardly understand anything of it. Nw I feel I'm not smart enough for it. I am really confused ,to what should I do now.
To my understanding "Linear algebra" cannot be skipped if I want to learn the very basics of AI.
I really have no one who can help me in this field. Could someone please help me by suggesting some resources for learning Linear algebra, from the beginners point of view, which would help in my dream of learning AI.
I would be extremely grateful to you. I am already grateful if you read this message .
Could you please help?
I was brought on board for a cv / robotics project, not knowing what it entailed. I soon discovered that CV is a math savvy field. I truly enjoy math but my knowledge of it does not go past calc I and a little calc II (some derivatives/chain rule).
Most CV classes I looked at my university required knowledge of linear algebra and matrices and vectors, is it possible to understand these concepts in a week or shorter without taking all the calcs?
My plan is to learn the basics of image processing / CV, and learn the math needed for these. I will mainly be working to understand object detection and tracking, if anyone here happens to be familiar with that field.
If yes, I will really love to know what you guys think about this book. Who this book is for, what you learnt, anything about it!!
Thank you! :)
(1,-2,1)+(0,1,-1) = (1,-1,0) =/= (0,0,0)
What are they referring to when they say v and w have components that add to zero?
I also don't understand the part where they say "There is no solution to cv+dw = (3, 3, 6) because 3 + 3 + 6 is not zero. " What is the significance of 3+3-6=0?
What I do know:
If cv + dw = 0, then cv=-dw i.e. v and w are combinations of each other and there lie in the same plane.
If (3,3,6) is not a solution, it means it is not in the plane.
Thanks in advance!
I decided to go through an entire linear algebra textbook before taking the class because the classes at my school move way to fast thanks to being on a quarter system. The stuff in the link below seems very advanced. Is this the kind of stuff that would be on am exam in a regular linear algebra class (the one you take immediately after calc 2) or should I not sweat it, knowing i will get to it in more advanced classes.
https://imgur.com/a/0s9oKw0
So I'm currently taking the second part of a course on Linear Algebra, having been given an exemption for the first class. Due to a bout of depression, I didn't attend the first 2 weeks of class. With the help of my girlfriend among other people, I managed to get back up but now, I'm facing an uphill battle since I have a lot of material to catch up to.
My question for you guys is what is the best way to learn the aforementioned topics of vector space algebra; is there a series of videos that can assist me? Is there a specific book that you guys found to be extremely helpful? Anything can help really as I'm hell-bent on getting the best possible grade. The class that granted me the exemption really did not prepare me well for this one too, which is also a reason for why I'm looking to ''learn'' those seemingly basic components of LA.
Thanks in advance!
P.S.: The book that we are using in class is Linear Algebra by Friedberg, Insel and Spence, 4th edition.
Edit: Forgot about Eigenvalues and Eigenvectors too.
I'm about to complete my 3rd year and feel my linear algebra is pretty poor! I want to do somethign about it this summer so any book or lecture notes would be grand :) Thanks .
Edit : Bonus points if it has pictures.
Hello, feel free to skip this introduction paragraph. I've been going through all of Professor Leonard's videos since I'm in University and have been struggling with Matrixes, Vectors, Integration, Differentiation and all that fun stuff. I have started watching all the videos all the way from Pre-Algebra, because although I know how to do everything, I was never sure why the things I done worked, nor the names of the things like "Coefficients" and "Like Terms" for example. I didn't know how anything related to anything else, I only had a basic understanding, not an in depth one. I've also been rushing through the videos because I only have 10 days before I'm back at Uni and Maths in the first subject, but I'm good at watching the videos at double speed, and skimming through videos I already know understand fully, I'm writing everything I don't know down in Anki, I would not rush if I had more time, but I believe I am getting a much more advanced knowledge than I had previously.
Anyway, I'm watching through Professor Leonard's "To The Point" playlist, and in TTP 5 at 14:42 he says that (9/x)-2=0 is not a linear equation.
Why is this? I realize that the equation is equal to 9x^-1 - 2 = 0, which does not satisfy the condition that a linear equation must involve the equation to only be to the first power, but can't you multiply both sides by x to become 9 - 2x = 0? That's a linear equation (I'm pretty sure)? Are they not the same lines? By graphing both lines is Desmos, they both look like they are in the exact same position, with the exact same solutions, but apparently one is a linear equation and the other is not?
I am very confused, any clarification would be appreciated, thank you in advance.
Hello everyone,
I am currently taking a linear algebra class. I was given some homework to do and I'm stuck on a particular question. What exactly is f(A) where f(x) = x^(2) - 5x + 7 asking me to do?
I must've missed this part in class because I can't find it in my textbook.
Thank you for your help, it is much appreciated.
Tried getting into Andrew Ng's Machine Learning courses, but I feel so lost with the math. Gradient vectors, transpose, whatnot. Frightening stuff.
I'm determined to learn as much ML as possible, but I don't know where to quickly learn Linear Algebra basics for this.
Any advice?
Hello, I'm stuck on a problem, I wanna find unit vector U = (x, y, z) that is perpendicular to u = (2/3, 1/3, 2/3). As I imagine, there should be a whole circle of those vectors. I've started with a system:
dot_product(u, U) = 0; => 2x/3 + y/3 + 2z/3 = 0;
|U| = 1; => sqrt(x^2 + y^2 + z^2) = 1;
I don't know what to do next. I guess I should solve this system and get equation for the circle that will contains all vectors that I'm looking for. But when I try to solve this I get some strange surfaces.
I'm hoping that someone can help to solve this system or find a mistake. Any help is much appreciated.
Please upvote if you find this problem challenging.
I know, I can just use dot product to get any perpendicular vector V. And U will equal V/|V|. But I really want to get to equation that describes whole circle of those vectors.
I wanted to start learning AI from the absolute basics like how to make neural networks from scratch, before learning to use the already made models life tensorflow, pytorch etc. To which I realised that I have to know some maths like linear algebra, probability distribution and differentiation. On searching of best resources of linear algebra for AI, the most suggested resource that came up was from MIT's opencourseware by Prof.Gilbert Strang.
I have been trying to understand his videos since last 3 days. I could hardly understand anything of it. Nw I feel I'm not smart enough for it. I am really confused ,to what should I do now.
To my understanding "Linear algebra" cannot be skipped if I want to learn the very basics of AI.
I really have no one who can help me in this field. Could someone please help me by suggesting some resources for learning Linear algebra, from the beginners point of view, which would help in my dream of learning AI.
I would be extremely grateful to you. I am already grateful if you read this message .
Could you please help?
