YOU GUYS SAID LINEAR ALGEBRA WOULD BE EASY WTF

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Anonymous Thu Jan 18 16:50:22 2018 No.9447210 [Reply] [Original]

YOU GUYS SAID LINEAR ALGEBRA WOULD BE EASY WTF

>>	Anonymous Thu Jan 18 17:08:51 2018 No.9447259 60% fail it at my school.

>>	Anonymous Thu Jan 18 17:14:52 2018 No.9447265 >>9447259

>>	Anonymous Thu Jan 18 17:15:46 2018 No.9447266 >>9447210 I know, I know. Just stick to it Eventually you look back on it and think, meh that was pretty doable

>>	Anonymous Thu Jan 18 17:17:13 2018 No.9447271 >>9447210 You are likely to be failing because of poorly approach to solve exercises, bad studying habits and disorganization of both your notes and exercises. Literally organize yourself, and your grades will improve.

>>	Anonymous Thu Jan 18 17:20:22 2018 No.9447277 >>9447210 Lol brainlet

>>	Anonymous Thu Jan 18 17:33:27 2018 No.9447305 >>9447210 im sorry, but what about it is hard exactly?

>>	Anonymous Thu Jan 18 17:38:18 2018 No.9447311 >>9447277 Fuck you for insulting my intelligence.

>>	Anonymous Thu Jan 18 17:39:20 2018 No.9447313 >>9447305 the proofs

>>	Anonymous Thu Jan 18 17:41:02 2018 No.9447315 >>9447210 it is easy you don't have to prove anything yourself, you just have to understand It's just practice, do 67 billion questions

>>	Anonymous Thu Jan 18 17:47:41 2018 No.9447323 File: 11 KB, 667x489, webwork.png [View same] [iqdb] [saucenao] [google] >>9447305 if linear algebra is so easy then solve this mr. genius

>>	Anonymous Thu Jan 18 17:48:30 2018 No.9447324 >>9447210 They go fast assuming you already saw a lot of it in high school.

>>	Anonymous Thu Jan 18 17:50:04 2018 No.9447327 >>9447323 They already reduced it for you, finding the kernel is easy. We're not doing your homework for you.

>>	Anonymous Thu Jan 18 17:50:41 2018 No.9447328 It's easy but a lot of schools use shitty books. use Strang

Anonymous Thu Jan 18 17:53:42 2018 No.9447332

>>9447323
e6=-2e5 or e6=e5=0
3e3=-e4 or e3=e4=0
e1=-e2 or e1=e2=0

[math]x=x_2\begin{bmatrix}-1 \\ 1 \\ 0 \\ 0 \\ 0 \\ 0 \end{bmatrix}+x_4\begin{bmatrix} 0 \\ 0 \\ -3 \\ 1 \\ 0 \\ 0 \end{bmatrix}+x_6\begin{bmatrix} 0 \\ 0 \\ 0 \\ 0 \\ -2 \\ 1 \end{bmatrix}[/math]

>>	Anonymous Thu Jan 18 17:54:23 2018 No.9447334 WHAT THE FUCK IS A NULL SPACE???

>>	Anonymous Thu Jan 18 17:56:44 2018 No.9447341 >>9447334 The null space (kernel) of a matrix A is the set of all vectors x such that Ax=0

>>	Anonymous Thu Jan 18 17:56:48 2018 No.9447342 >>9447334 The set of vectors that output 0 in a linear transformation.

>>	Anonymous Thu Jan 18 17:58:10 2018 No.9447344 Is lin alg the official distinction between brainlets and geniuses?

>>	Anonymous Thu Jan 18 17:58:33 2018 No.9447345 >>9447334 i have a linear algebra exam tomorrow. used these vids to study: https://www.youtube.com/watch?v=qvyboGryeA8 i have skiped most of the lectures and i still feel confident, check the channel, it's so helpful

>>	Anonymous Thu Jan 18 18:00:11 2018 No.9447349 File: 19 KB, 706x629, webwork2.png [View same] [iqdb] [saucenao] [google] >>9447332 wtf bro I just failed my online quiz thanks a lot...

>>	Anonymous Thu Jan 18 18:07:04 2018 No.9447357 >>9447271 So what does being organized mean, as far as notes and exercises? Like keep everything in a binder? Right now I keep my hand outs in a folder and my written notes in a notebook.

>>	Anonymous Thu Jan 18 18:09:37 2018 No.9447360 don't worry, I'm a graduate and I still don't know what a dual really is.

>>	Anonymous Thu Jan 18 18:16:01 2018 No.9447371 >>9447332 Lol idiot, you got it wrong >>9447349

>>	Anonymous Thu Jan 18 18:17:05 2018 No.9447374 >>9447332 brainlet detected

>>	Anonymous Thu Jan 18 18:19:10 2018 No.9447380 >>9447323 are you fucking serious

Anonymous Thu Jan 18 18:22:03 2018 No.9447392

>>9447349
Plug the 2nd into the top equation
>3+4=0
so you need to fuck with e1 and e2
e1+e2=-12
so let e1=e2=-6 (all other value are just added combinations of first nullspace vector)
<-6 -6 -3 1 0 0>

Plug the 3rd into the second equation
>-3=0
so you need to fuck with e3 and e4 so
e3+3e4=3
let e4=1
Plug the new 3rd into the top equation
+15=0
so you need to fuck with e1 and e2
e1+e2 = -15
so let e1=-8 e2=-7
<-8 -7 0 1 -2 1>

>>	Anonymous Thu Jan 18 19:12:29 2018 No.9447481 >>9447210 AAAAAAAAAAAAAAAA I FEEL YOU OP >>9447271 wtf is a good studying habit?? is writing a summary, doing the homework sheets again, and then doing previous exams good for exam preparation?

>>	Anonymous Thu Jan 18 19:17:17 2018 No.9447486 >>9447305 It's the proofs for me. You literally need that spark of creativity to solve them, no amount of study can help you on the harder problems.

>>	Anonymous Thu Jan 18 19:24:27 2018 No.9447499 >>9447210 It's not that hard anon kun. Just sit your ass and study instead complain on this chinese imageboard.

>>	Anonymous Thu Jan 18 19:27:53 2018 No.9447507 >>9447210 90% of /sci/ are brainlets who think linear algebra is just matrix algebra

>>	Anonymous Thu Jan 18 19:47:08 2018 No.9447534 >>9447345 thats the one where I stopped watching yesterday...thanks you fucking creep

>>	Anonymous Thu Jan 18 19:54:20 2018 No.9447543 >>9447323 >he cant find the null space of an already row reduced matrix this is literally like basic basic lin algebra. wtf dude

>>	Anonymous Thu Jan 18 20:05:56 2018 No.9447562 >>9447543 prof never even fucking explained what a god damn null space is

>>	Anonymous Thu Jan 18 20:08:42 2018 No.9447566 >>9447562 >expecting the professor to actually teach Well there's your problem

>>	Anonymous Thu Jan 18 20:10:37 2018 No.9447568 >>9447562 lin alg is the kind of thing a textbook can teach you pretty well

>>	Anonymous Thu Jan 18 20:10:50 2018 No.9447569 >>9447566 >>9447568 what the fuck am I supposed to do then?! i already complained to the department head like 5 times about my old fart professor

>>	Anonymous Thu Jan 18 20:10:54 2018 No.9447570 >>9447507 this

>>	Anonymous Thu Jan 18 20:15:56 2018 No.9447579 File: 57 KB, 960x720, 1495529441674.jpg [View same] [iqdb] [saucenao] [google] wait until you get to Weyl and Clifford Algebra, brainlet.

Anonymous Thu Jan 18 20:35:28 2018 No.9447601

>>9447210
If your textbook focuses on matrices more than mappings, then it's trash and you should pick a better one.
Axler's book is God tier. And so are 3Blue1Brown's videos.

https://www.youtube.com/playlist?list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab

Seriously watch that. You won't regret it.

>>	Anonymous Thu Jan 18 20:43:11 2018 No.9447614 >>9447210 Biofag here. Took linear algebra last year (not lin alg for engineers or some other brainlet shit, it was lin alg for first year mathematics students) and it was pretty easy, I aced it. I guess you simply must be a brainlet my friend.

>>	Anonymous Thu Jan 18 20:53:07 2018 No.9447625 >>9447349 x2(-1,1,0,0,0,0) + x4(-7,0,3,1,0,0) + x6*(-8,0,3,0,-2,1)

Anonymous Thu Jan 18 20:53:18 2018 No.9447626

>>9447562

matrices are functions. A 4 by 6 matrix will get a 6-dimensional vector as input and give a 4-dimensional vector as output. Ax=0 can be read as A(x)=0. More explicitly, it's asking what set of vectors 'x' go through A and return the vector (0,0,0,0).

>>	Anonymous Thu Jan 18 20:54:45 2018 No.9447628 >>9447562 Null space is just space of solutions for ax=0 Just pay attention and read the book you nigger.

>>	Anonymous Thu Jan 18 21:00:40 2018 No.9447638 >>9447210 We also said not to be a brainlet.

>>	Anonymous Thu Jan 18 21:18:16 2018 No.9447666 >>9447628 a has to be zero then when x is not 0 but I tried that and its not working...

>>	Anonymous Thu Jan 18 21:21:23 2018 No.9447675 >>9447334 rref, span

>>	Anonymous Thu Jan 18 21:42:47 2018 No.9447718 >>9447666 It's the space of ALL solutions you fucking brainlet. Get the fuck out of here and read a fucking book you ugly white cunt.

>>	Anonymous Thu Jan 18 22:13:04 2018 No.9447779 >>9447666 >a has to be zero then when x is not 0 but I tried that and its not working... holy shit nigga, what the fuck are you learning in linear algebra that they didn't even teach you that A*B = 0 doesn't requires that A or B be equal to 0?

>>	Anonymous Thu Jan 18 22:15:16 2018 No.9447781 >>9447666 homogenous >>>>>>>>>>>>>>>><<<<<<<<<<><><><>><><><<><><

>>	Anonymous Thu Jan 18 22:16:03 2018 No.9447783 >>9447210 Its beautiful and easy if you know math notation and easier if you're not a brainlets. Don't worry m8, I bet you ain't a brainlet. And just know analysis is way harder so don't worry

>>	Anonymous Thu Jan 18 22:17:27 2018 No.9447786 >>9447210 /sci/ always speaks the opposite of the truth.

>>	Anonymous Thu Jan 18 22:17:59 2018 No.9447787 >>9447323 OP confirmed for giga-brainlet

>>	Anonymous Thu Jan 18 22:18:52 2018 No.9447790 Use Linear Algebra done right masterrace.

>>	Anonymous Thu Jan 18 22:27:21 2018 No.9447807 >>9447323 I don't even know what the fuck I'm looking at and it doesn't look too hard. Lemme guess you have parents so you get to go to college while I'm stuck at Wendy's making 9.25 an hour with a 140 iq haha damn this life is funny

>>	Anonymous Thu Jan 18 22:28:33 2018 No.9447808 >>9447807 Jealousfag

>>	Anonymous Thu Jan 18 22:28:50 2018 No.9447809 >>9447807 >140 iq haha damn this life is funny yeah ok

Anonymous Thu Jan 18 22:30:40 2018 No.9447811

>>9447569
Independent research. Trust me, I know it sucks, but they've got you by the balls. Just do what you have to do and don't count on the school or the professor for jackshit because they do not care about you, your education, or your future. You might as well be on your own. It just so happens that they hold that piece of paper that you need necessitating that you continue doing business with them.

>>	Anonymous Thu Jan 18 22:31:40 2018 No.9447812 >>9447808 Says the nigger who can't math. My 35 on the ACT is probably more of an accomplishment than anything you'll do lol. But yeah you're smarter cuz college

>>	Anonymous Thu Jan 18 22:35:00 2018 No.9447819 >>9447486 Linear algebra problems require almost no creativity. They are as straightforward as they come.

Anonymous Thu Jan 18 22:37:14 2018 No.9447823

>>9447812
If you're an actual genius you should be studying programming. You can get a good programming job with less than 4 year self-study.

>>9447812
If your test scores are actually that good you could have gone:
PSAT -> National Merit Scholar -> full ride to one of several schools

Anonymous Thu Jan 18 22:39:48 2018 No.9447827

>>9447823
>tfw 1390 on psat in 2017
>tfw NMS selection index for recognition was placed 2 points above what mine was
But hey at least my dad was from mexico so I got hispanic recognition and a smaller scholarship wew lad. Additionally thank you hispanohablante niggers for being so stupid

>>	Anonymous Thu Jan 18 22:39:53 2018 No.9447829 >>9447812 >my ACT score is my biggest accomplishment 2 years from now you'll remember this post and instantly blush from the embarrassment

>>	Anonymous Thu Jan 18 22:43:02 2018 No.9447838 >>9447812 Why aren't you going to college, nigger?

>>	Anonymous Thu Jan 18 22:45:17 2018 No.9447842 >>9447812 You didn't go to college, you would have gotten a full ride with your "35". So you're a faggot brainlet, so you have no accomplishments. That "35" is outshined by your retartedness and bitter jealousy

>>	Anonymous Thu Jan 18 22:47:43 2018 No.9447850 >>9447349 >Doesn't know how check answers. Fuck man. Why are you taking a math based program?

>>	Anonymous Thu Jan 18 22:48:59 2018 No.9447853 >>9447360 It's the set of linear transformations to the scalar field.

>>	Anonymous Thu Jan 18 22:50:08 2018 No.9447856 >>9447569 This is university my dude. You need to learn how to learn and how to solve problems.

>>	Anonymous Thu Jan 18 22:50:08 2018 No.9447857 >>9447360 then you have a huge problem, mate. what the fuck are you doing? >inb4 you didn't even study math

>>	Anonymous Thu Jan 18 22:51:10 2018 No.9447860 >>9447569 spend your time studying hoffman & kunze instead of complaining

Anonymous Thu Jan 18 23:10:41 2018 No.9447901

>>9447842
Perhaps the "you have parents" could have clued you in on my situation and a test score being more significant than anything you've done is something you should be blushing about. But yeah I'm a nigger for being busy trying to support myself with no degree in a world where dick scrubbers need a bachelor's

>>	Anonymous Thu Jan 18 23:12:51 2018 No.9447904 >>9447823 Yeah I'm trying to learn coding in my spare time. I need to move though middle of nowhere has no coding gigs

>>	Anonymous Thu Jan 18 23:34:11 2018 No.9447943 >>9447807 Got get an associates in math, then transfer to a UNI but first shut the fuck up a person with a 100+ IQ would have already been enrolled at a community college at least

>>	Anonymous Thu Jan 18 23:40:25 2018 No.9447953 >>9447210 never trust anyone when they say shit like this, >omg ochem is so easy >ochem1: yeah easy >ochem2: not bad >ochem3: fuck this shit, i'm just going to major in software eng.

>>	Anonymous Thu Jan 18 23:50:28 2018 No.9447968 >>9447811 >>9447856 >>9447860 >the professor is never to blame >you pay him $50k to do jack shit >"hurr durr independent learning!" Why even pay his fat bearded ass then?

Anonymous Thu Jan 18 23:52:10 2018 No.9447971

>>9447943
No u dick. Go suck your dad's dick for more money for your useless education because you know damn well you don't need or deserve it because you're a nigger retard who can't solve simple problems or even deduce any coherency from plain English. If you think I'm just sitting on my ass instead of working toward eventually being your owner some day, your ass will be so unprepared it will expand so quickly you'll be nothing but shreds of a once functioning asshole so you better suck that dick good and hard and work on your little matrix problems while you still have an ass to sit on because I'm comin for you u lil bitch. This site is full of niggers who can't math that don't even belong in college, while simultaneously decrying anyone who lacks the support to study instead of work. Buncha fuckin soyboys cosplaying rednecks. You have a head start. I'm still gonna fuck your ass in the end. You hear me nigger? U better run

>>	Anonymous Thu Jan 18 23:57:20 2018 No.9447983 >>9447971 Holy shit this is like a C+ pasta thanks You precious little child

>>	Anonymous Fri Jan 19 00:10:59 2018 No.9448005 File: 81 KB, 645x729, el brainlet simiano.png [View same] [iqdb] [saucenao] [google] >>9447210 it is

>>	Anonymous Fri Jan 19 00:18:45 2018 No.9448020 >>9447812 I got a 2150 on SAT, it doesn't mean shit unless you do something with it now get me my extra large fries, brainlet.

Anonymous Fri Jan 19 00:24:08 2018 No.9448034

>>9447968
Imagine thinking professors can actually teach better than MIT opencourseware or other online tools. The reason we pay and go to uni is for the degree cuz it looks good to blue pilled normies who think need a degree for anything. You're a brainlet, anon.

>>	Anonymous Fri Jan 19 01:24:28 2018 No.9448171 >>9447971 CS graduate here, guys like you are lucky to bring me my coffee.

Brad Fri Jan 19 02:31:04 2018 No.9448271

>>9447210
Man these /sci/erers, i knew i should have listened to them, their advice is shit. I had chosen pure theoretical physics and now im a neet, that has the ability o shitpost aon a board, and disus fucking /sci/ence hiposters that dont know shit about it.
I suppose you could say i am suCCesful on my field.

>>	Anonymous Fri Jan 19 02:44:05 2018 No.9448295 >>9447807 t. brainlet

>>	Anonymous Fri Jan 19 02:49:18 2018 No.9448305 Fuck Sal Khan. Watch Angry Video Game Nerd's lectures https://www.youtube.com/watch?v=Fnfh8jNqBlg&list=PLlXfTHzgMRUKXD88IdzS14F4NxAZudSmv

>>	Anonymous Fri Jan 19 02:51:06 2018 No.9448306 File: 431 KB, 792x560, 940f382fa56d139bf4d8a9ac6156d5f52065db693678a33d2b151857e5740aba.jpg [View same] [iqdb] [saucenao] [google] >>9447323 God, /sci/ is so easy to troll

>>	Anonymous Fri Jan 19 03:12:22 2018 No.9448331 Can someone explain how to transform matrices to linear mappings vice versa? Prof never cared to explain that shit

Anonymous Fri Jan 19 03:18:39 2018 No.9448340

>>9447357
>>9447481
Not the dude you're talking to, but honestly LA is the first math class you'll take where it's worth it to add notecards to your study methods. There are a lot of straight up facts about different structures that build the foundations for a lot of things that are just worth memorizing for the sake of climbing that learning curve. It's a lot like playing an instrument for the first time. You gotta memorize a lot of new things, but picking up stuff later will come more naturally.

>>	Anonymous Fri Jan 19 08:14:31 2018 No.9448622 This is linear algebra? I had to utilize vectors and their products for a piece of software I patented so learned this in a jiff... Although I breezed through calc 1 and 2 without studying.

>>	Anonymous Fri Jan 19 09:23:56 2018 No.9448692 >>9447305 Multilinear algebra is really fucking difficult

>>	Anonymous Fri Jan 19 13:32:13 2018 No.9449055 >>9447901 I never met my dad and my mother passed away when I was 7. And I still got my degree, so fuck you and your sob story. Anything is possible if you really want it. It was hard af but it can be done

>>	Anonymous Fri Jan 19 14:31:06 2018 No.9449180 >>9448306 the joke is on you

>>	Anonymous Fri Jan 19 15:20:13 2018 No.9449265 >>9447860 Is it true that Hoffman & Kunze is the most comprehensive textbook about Linear Algebra? Are the exercises good? Somebody please respond.

>>	Anonymous Fri Jan 19 15:21:22 2018 No.9449266 >>9449265 It is a really great book. My LA course used it.

>>	Anonymous Fri Jan 19 15:25:12 2018 No.9449278 File: 8 KB, 432x333, finalexam.png [View same] [iqdb] [saucenao] [google] can you guys help me with this please?! I need to get this done by tonight or else I fail my quiz please guys I literally havent gone to class at all im so lost

>>	Anonymous Fri Jan 19 15:31:24 2018 No.9449295 >>9449278 eigenvalues or something

>>	Anonymous Fri Jan 19 15:50:42 2018 No.9449323 >>9447210 It really is that simple, you are just a faggot retard.

>>	Anonymous Fri Jan 19 15:54:12 2018 No.9449330 >>9449278 > I literally havent gone to class at all im so lost You deserve this, show up for class.

>>	Anonymous Fri Jan 19 15:56:32 2018 No.9449334 >>9449278 you can plug that into some online calcuator wolfram can probably do it

>>	Anonymous Fri Jan 19 15:56:46 2018 No.9449335 >tfw I don't get linear algebra >when I say this people here think I'm new to math and don't know how to study >am years into a math degree I just don't get it

>>	Anonymous Fri Jan 19 15:57:34 2018 No.9449336 One of the goals of math is reducing shit to a linear algebra problem because it's easy as fuck.

>>	Anonymous Fri Jan 19 15:58:54 2018 No.9449339 >>9449335 solve linear equations done

>>	Anonymous Fri Jan 19 16:24:01 2018 No.9449387 >>9447968 >Why even pay his fat bearded ass then? For the degree. You are buying a diploma.

>>	Anonymous Fri Jan 19 16:35:37 2018 No.9449406 >>9447968 >professor >50k a year Lecturers aren't professors.

>>	Anonymous Fri Jan 19 17:09:39 2018 No.9449466 >>9448034 >>9449387 >>9449406 Man I'm glad I don't live in your depressing world. All my professors are good people open to talking to all their students and engage in projects with them.

>>	Anonymous Fri Jan 19 17:23:54 2018 No.9449502 >>9449466 Where do you go then?

>>	Anonymous Fri Jan 19 17:42:00 2018 No.9449539 >>9449266 Thanks for the reply and nice dubs.

>>	Anonymous Fri Jan 19 18:42:48 2018 No.9449663 File: 32 KB, 500x303, morpheus-understand.jpg [View same] [iqdb] [saucenao] [google]

>>	Anonymous Fri Jan 19 21:10:29 2018 No.9449995 File: 22 KB, 300x400, havinglunch.jpg [View same] [iqdb] [saucenao] [google] >>9447210 >mfw linear algebra, along with finite element analysis are among the extremely few fields that just made complete intuitive sense for me

>>	Anonymous Fri Jan 19 23:24:35 2018 No.9450197 >>9449995 Me too. I was never great at calculus but linear algebra really got me into math and realized that there is a lot more higher math out there than just calculus (lin. alg. probably has a wider range of applications than calculua as well)

>>	Anonymous Fri Jan 19 23:26:40 2018 No.9450199 >>9449278 a+5b=-20 -4a+4b=8 -3a+8b=-9 this is literally middle school level stuff, brainlet.

>>	Anonymous Sat Jan 20 06:02:29 2018 No.9450578 >>9447323 TOP FUCKING KEK

>>	Anonymous Sat Jan 20 06:32:58 2018 No.9450605 >>9450199 yeah but he probably went to public school in America

>>	Anonymous Sat Jan 20 08:59:05 2018 No.9450714 >>9447323 LOL. >>9447210 Linear Algebra is one of easiest Math subjects.

Anonymous Sat Jan 20 12:22:58 2018 No.9450943

>>9449995
>>9450197
Same here with linear algebra. Everyone was raving about those 3 brown 1 black videos but it was the same shit as I always understood it. The only surprising thing in linear algebra to me was the relationship between column and row spaces.

And I'm a brainlet. I don't think I'm capable of understanding delta epsilon proofs.

>>	Anonymous Sat Jan 20 12:45:14 2018 No.9450973 >>9447827 >tfw 1390 SATlet >tfw 1400 is the magic cutoff >>9447812 >he thinks the ACT is difficult kids at my high school took both and approx. 1700-2100 2400SAT + 34-36 ACT is extremely common

>>	Anonymous Sat Jan 20 13:16:09 2018 No.9451038 File: 28 KB, 558x614, 1511879895360.jpg [View same] [iqdb] [saucenao] [google] >>9447323 >unregular matrix >non-invertable matrix >determinant is 0 >no cholesky-decomposition of your matrix

>>	Anonymous Sat Jan 20 13:44:01 2018 No.9451090 >>9447323 okay OP I was gonna post a reply empathizing with you since I took it last semester, but this is just ridiculous. this is so incredibly easy and now I think you're a fucking brainlet retard

>>	Anonymous Sat Jan 20 13:47:14 2018 No.9451093 >>9447323 >going to a school with online homework/quizzes how to know you go to a brainlet school 101

>>	Anonymous Sat Jan 20 14:02:56 2018 No.9451120 >>9447210 It is, just pay attention to the formulas and everything will be all right

>>	Anonymous Sat Jan 20 14:05:04 2018 No.9451124 >>9451093 Gotta get that WebWorK green Does OP go to UBC by any chance?

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/sci/ - Science & Math