To calculate the 2nd power of a matrix You multiply it by itself. Does the mean you can't multiply non-quadratic matrixes?

So obviously a quadratic matrix is "n x n". Lets take

  • A = 2 x 2
  • B = 2 x 3

So raising A to the second power, the result will be a 2 x 2 matrix. Because the rule of multiplying in the case of matrixes is: "n x k * k x m" where the result will be an "n x m" matrix.

But in B's case raising a 2 x 3 matrix to the 2nd power you would need to multiply a 2 x 3 matrix with a 2 x 3 matrix. Which is impossible.

Does that mean you have to multiply B with B^(T)? That would be the only logical way, at least for me. I refuse to believe that it's impossible to raise a non-quadratic matrix to any power. Maybe I'm just overthinking. I'm terrible at maths so please go easy on me.

I'm prepping for my linear algebra & discrete mathematics I. exam and I was just wondering as we haven't really spoken about this.

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πŸ‘€︎ u/HerrMatthew
πŸ“…︎ Jan 03 2022
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[Calculus] For (c) does it mean that only half of the quadratic graph is one-to-one? If so then is it the first half or the 2nd half? And what could the interval represent?
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πŸ‘€︎ u/itzBatzy
πŸ“…︎ Dec 03 2021
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[Grade 10 Maths - Quadratics/Algebra] What does "writing -x as a difference" mean and why I need to do it?
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πŸ‘€︎ u/PvPWill
πŸ“…︎ Mar 25 2021
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Quadratic equation, Ax^2 + Bx + C. If B^2 - 4AC = 0. Then that means that there is only 1 real root? And also 0 imaginary roots?
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πŸ‘€︎ u/desterpot
πŸ“…︎ Dec 23 2020
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I mean, the man didn't even know what the quadratic equation was!
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πŸ‘€︎ u/AMidrang
πŸ“…︎ Oct 08 2020
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[IB YEAR 11 MATHS AI SL: QUADRATIC FUNCTIONS] How do you determine the equation of the parabola given the x-intercepts and the y-intercepts? (Circle in the middle means point not included)
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πŸ‘€︎ u/posturegeek
πŸ“…︎ Aug 27 2020
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Why do we complete the square when solving a quadratic equation ? What does it mean? youtu.be/xCT0CbYomyU
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πŸ“…︎ Apr 12 2020
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ELI5:What does a quadratic relationship between variables mean in research papers?

And how is it different to a linear relationship? I cannot seem to find a simple explanation!

Thank you!

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πŸ‘€︎ u/ISawsAMaow
πŸ“…︎ Apr 22 2020
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i do not know how to put quadratic equations into vertex form. im so fucking confused. what does completing the square mean
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πŸ‘€︎ u/kerkitt
πŸ“…︎ Jul 31 2019
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[WP] You wake up in a room surrounded by men in black, with one putting a gun to your head. Then someone who looks like there leader stands up and pulls out a whiteboard from a corner of the room. He points to the quadratic formula and asks you, "The numbers Mason, what do they mean?"
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πŸ‘€︎ u/alargedong
πŸ“…︎ Nov 22 2018
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[Undergrad Linear Algebra/Vector Calculus] : What does the "degeneracy" or the non-degeneracy of a quadratic surface mean?

So I'm in my introductory vector calculus class, and we're talking about curves and surfaces in 3 dimensions (next chapter, n-dimensions). The instructor and the textbook kind of glossed over the whole "degeneracy" part of the topic and I was interested about it.

So, what does it really mean?

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πŸ‘€︎ u/kitizl
πŸ“…︎ Apr 20 2017
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[college stats] what does "Test the quadratic effect " mean when dealing with quadratic multiple regression?

i'm thinking it could mean use VIF test or is it something else?

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πŸ‘€︎ u/philmtl
πŸ“…︎ Oct 04 2014
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[gr 10 math] what does b and c mean in a quadratic so formula?

in my notes it said that, b is the lofation of the life of symmetry, where c is the value of the y intercept.

What is the difference between those two?

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πŸ‘€︎ u/badboyzpwns
πŸ“…︎ Dec 29 2015
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Need help with this: What exactly does he mean by β€œFlat signs are grouped in a square and small signs in a rectangle” is it like a quadrat?
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πŸ“…︎ Oct 19 2020
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PvP players: This is how you’ll spend your first weeks in 9.2

Hi all. I posted a write-up on my blog, which I thought is worth sharing with the PvP community on Reddit. It's focused on what you'll want to do, specifically as a PvP chad gamer. Hope it helps!

---

An end to the depression epidemic caused by The Maw & Korthia!

I’m an avid WoWhead reader. I don’t think I’ve missed at least skimming through a single post for ages. If you’re like me, which you probably aren’t because you have a blossoming social life, you’re likely aware that Patch 9.2 will bring a new zone, Zereth Mortis, new reputation grinds, the ability to craft and use two legendaries concurrently, and other miscellaneous tidbits.

But how does it all tie in together, specifically from the point of view of a PvP player? What awaits in terms of endgame progression? Perhaps you’ve heard of the Cinch of Unity, and of Cosmic Flux, the Enlightened, and of Cyphers of the First Ones, and of Progenitor Matrices and consoles and all that jazz, but what does it all mean? Which parts concern you as a PvP chad gamer, and which are just noise if you’re only looking to do Arena and RBGs?

I sacrificed more time than I care to admit manually going through the new Chapters on the Patch 9.2 PTR to better understand, and it’s time to present my findings!

I solemnly swear, on penalty of online exile, to update this write-up should things change. Feel free to bookmark.

Structural progression type deal in 9.2

This means that Blizzard has already set in stone a few things that you won’t be able to ignore:

  • Week 1 of Patch 9.2, you’ll only have access to Chapters 1 through 3 of the Campaign and the new raid on Normal difficulty. You’ll likely spend most of your time grinding reputation during those 7 days. World Quests open after Chapter 2, so start doing them. During Chapter 3, you’ll open access to the Cypher Research Console. You needn’t worry about it too muchβ€”it just lets you research bonuses to your character within Zereth Mortis only;
  • Week 2 of Patch 9.2 will unlock Chapter 4, Heroic Raiding, M+ and Rated PvP. Given that we’re PvPers, many of you will only need to care about the Campaign and queueing Arena. You’ll continue to accumulate reputation;
  • Week 3 of the patch, Mythic Raiding will open, and so will Chapter 5. You’ll do what you usually do, in addition to farming reputation with The Enlightened;
... keep reading on reddit ➑

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πŸ‘€︎ u/JacklinNeptulon
πŸ“…︎ Jan 22 2022
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SERIOUS: This subreddit needs to understand what a "dad joke" really means.

I don't want to step on anybody's toes here, but the amount of non-dad jokes here in this subreddit really annoys me. First of all, dad jokes CAN be NSFW, it clearly says so in the sub rules. Secondly, it doesn't automatically make it a dad joke if it's from a conversation between you and your child. Most importantly, the jokes that your CHILDREN tell YOU are not dad jokes. The point of a dad joke is that it's so cheesy only a dad who's trying to be funny would make such a joke. That's it. They are stupid plays on words, lame puns and so on. There has to be a clever pun or wordplay for it to be considered a dad joke.

Again, to all the fellow dads, I apologise if I'm sounding too harsh. But I just needed to get it off my chest.

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πŸ‘€︎ u/anywhereiroa
πŸ“…︎ Jan 15 2022
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Cycling in quadrate - the road sign with a bike & frei means go on or no cyclist?

very very new to Mannheim. picked up my bicycle last week. been told by all kinds of ppl that are not from Mannheim (we are all int. students) that I should keep an eye on the road signs in Quadrate or else feel sorry...

so those big red road sign with a bike and the word 'frei' means I could continue cycling on this road ja? what if there's neither any sign nor bike lane? which is really the case here.

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πŸ‘€︎ u/Starman_calling
πŸ“…︎ Sep 29 2017
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Blind computer science student goes above & beyond in inaccessible math course

I am not the OP. u/Laser_Lens_4 is the OP from r/blind.

Original

[Rant] Math makes me resent sighted people

I don't like doing these, but I need to talk about my frustrations with people who actually get it. Maybe some good can come out of it. Maybe some blind math wiz will laugh and tell me I've done everything wrong and send me to a website that let's me do this all with perfect accessibility. so here goes.

I'm one week away from completing a remedial math course in community college here in the states. I'm tired, stressed, angry, and want it to end... oh, and I'm insane enough to pursue a computer science degree, so I've got years of math ahead. Let me tell you a bit about my math story as a blind woman.

I was terrible at math in grade school. In retrospect, it was probably because I spent so much effort on squinting at all the weird symbols that I had no time left to actually learn the content. Now that I'm in college and using a sight-free workflow, I'm actually getting it. The most surreal event so far is learning logarithms and understanding it easily whilst vividly remembering sitting in high school and being thoroughly confused.

So where's the rant? Well, the entire past 16 weeks have been an exercise in misery. So, I walk into class, introduce myself to the instructor, and listen to him talk about math for an hour and a half. I go home to try homework online. What do I find? Not LaTeX, not MathML, but some proprietary code on Cengage's website. It's not too bad at first, but mind you absolutely nobody showed me how to use this website, so the first week consisted of me aimlessly navigating by headings and form fields. Then we hit exponents and quadratics. NVDA straight up didn't read superscripts. Thus begins my first email chain bitching at disability workers and web devs. They tell me to use Firefox and Math Player with NVDA, so that means I have to switch browsers, install software, and count my lucky stars that I know how to use NVDA since they provided no instruction for that. Fine, right? Nope. I have to switch the math renderer on the website to MathML, oh and they had to create a duplicate course where everything had been made accessible. So you know, separate but equal... just like the 60's! But wait, there's more. I couldn't switch the renderer myself. I had to have a sighted

... keep reading on reddit ➑

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πŸ‘€︎ u/juswundern
πŸ“…︎ Dec 21 2021
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Just because it's a joke, doesn't mean it's a dad joke

Alot of great jokes get posted here! However just because you have a joke, doesn't mean it's a dad joke.

THIS IS NOT ABOUT NSFW, THIS IS ABOUT LONG JOKES, BLONDE JOKES, SEXUAL JOKES, KNOCK KNOCK JOKES, POLITICAL JOKES, ETC BEING POSTED IN A DAD JOKE SUB

Try telling these sexual jokes that get posted here, to your kid and see how your spouse likes it.. if that goes well, Try telling one of your friends kid about your sex life being like Coca cola, first it was normal, than light and now zero , and see if the parents are OK with you telling their kid the "dad joke"

I'm not even referencing the NSFW, I'm saying Dad jokes are corny, and sometimes painful, not sexual

So check out r/jokes for all types of jokes

r/unclejokes for dirty jokes

r/3amjokes for real weird and alot of OC

r/cleandadjokes If your really sick of seeing not dad jokes in r/dadjokes

Punchline !

Edit: this is not a post about NSFW , This is about jokes, knock knock jokes, blonde jokes, political jokes etc being posted in a dad joke sub

Edit 2: don't touch the thermostat

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πŸ‘€︎ u/CzarcasmRules
πŸ“…︎ Jan 23 2022
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I personally find it weird that Ganyu's Playstyle being deemed boring is used as a con to weigh out whether you should roll for her or not.

Personally I don't like to use this reason because eventually you'll get bored of any character that you play in the long run. Also, I believe that by saying this, people are unintentionally selling the idea that Ganyu's Playstyle is inherently boring and you'll only get bored of it no matter what. It's like trying to say that there is an "objective" way of having fun when there are different ways that people play.

Like if I were to recommend whether or not people should play Ganyu, I would always leave out whether or not it is fun because again, YOU decide what is fun for yourself. Ganyu's one of the only proper archers in this game besides Amber, since normal attack archers are gimped by bad auto targeting, charged shots are the way to go, so it's kind of inevitable for the Playstyle to be not flashy. However that doesn't make it less fun since some people actually like being a bazooka or nuke from afar.

When I try to recommend Ganyu, I'd try to recommend it in the least bias way as possible through just mentioning the pros and cons, for example:

Pros:

  • Not easily gimped by debuffs due to having two sources of damage from ultimate and charge attack.

  • High raw attack damage

  • Very flexible build options through freeze, melt, and even support

  • Weapons are F2P friendly

Cons:

  • Melt is clunky to play for most players which means that it requires a shield and also trades off using Childe Vape or Raiden National, which is generally less clunky to play and scales off better in AOE + ST situations.

  • Freeze teams are expensive as off field hydro appliers are all 5 stars which are limited or lacking a banner and best Anemo Flexes are also limited

  • Freeze team falls off in AOE because it is dependent on Venti's quadratic scaling.

I just list out pros and cons and decide whether or not people should roll. Don't use this as an accurate guide of Ganyu's pros and cons though, just giving an example that's all.

I just find it puzzling that boring is always associated with her Playstyle when in fact fun again is subjective so people should really avoid projecting their ideas of fun when doing recommendations.

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πŸ‘€︎ u/nihilnothings000
πŸ“…︎ Dec 27 2021
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AMA: How I scored 99.50 without taking a single note in year 12.

First of all, I would like to clarify that my title is slightly clickbait. Whilst I didn't strictly record notes every single lesson about every single thing, I still did the questions my teachers told me to and virtually all homework.

Also consider this post an AMA, happy to answer every and all questions around VCE, my subjects or the UCAT test (3230).

Hello everyone, my name is u/robloxprostitute (@exy on discord iykyk) and I have been a long time lurker of the r/VCE subreddit. Over my VCE experience, I have been spoiled by the many useful, yet also useless and entertaining posts that this subreddit has been able to provide. Instead, I thought I would give back to the community today and share my experience in VCE, and how I was able to score a 99.50 ATAR while still actually being able to enjoy year 12.

General Study tips:

I would like to also add that all tips are merely tips that worked for me. What works for me may not work for you so I would encourage you to experiment with what study techniques work.

  1. Utilise productivity apps, but not in a stupid way: I was the type of student that used to spend hours setting up a notion, download all the study apps I can, and cram productivity videos in order to make myself feel good. This is a massive red flag, productivity apps are good, but are only good if you use them productively, which means, getting work done. So my main advice here is to not get caught up in creating super complex study systems, and just keep it simple and effective.
  2. Don't stress too much about things: It is so easy to get super frustrated when you drop easy mark/s in a maths SAC that you could've easily gotten, but don't get caught up in past mistakes. It is so crucial that you realise that what is in the past is in the past. Instead, look at where you went wrong in your preparation, and adjust that so come d-day (exams), you can be confident you won't make shitty mistakes.
  3. You don't need to know absolutely everything: I'll be quite honest and frank here, walking into my Chemistry exam, I barely knew what a free radical was, or what the obscure naming conventions are etc. The point I am making here is that when you study, you are far better preparing for areas which are likely to take up most of the exam, ie focus on the major topics in ER rather than that one super hard separator at the end of the methods exam. By prioritising what is important, you'll maximise the marks where you can and overall scor
... keep reading on reddit ➑

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πŸ‘€︎ u/RobloxProstitute
πŸ“…︎ Jan 07 2022
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Blind Girl Here. Give Me Your Best Blind Jokes!

Do your worst!

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πŸ‘€︎ u/Leckzsluthor
πŸ“…︎ Jan 02 2022
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Petition to ban rants from this sub

Ants don’t even have the concept fathers, let alone a good dad joke. Keep r/ants out of my r/dadjokes.

But no, seriously. I understand rule 7 is great to have intelligent discussion, but sometimes it feels like 1 in 10 posts here is someone getting upset about the jokes on this sub. Let the mods deal with it, they regulate the sub.

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πŸ‘€︎ u/drak0ni
πŸ“…︎ Jan 24 2022
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French fries weren’t cooked in France.

They were cooked in Greece.

πŸ‘︎ 9k
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πŸ“…︎ Jan 20 2022
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This subreddit is 10 years old now.

I'm surprised it hasn't decade.

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πŸ‘€︎ u/frexyincdude
πŸ“…︎ Jan 14 2022
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You've been hit by
πŸ‘︎ 6k
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πŸ‘€︎ u/mordrathe
πŸ“…︎ Jan 20 2022
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I'm sick of you guys posting dumb wordplay in here for awards and upvotes.

Don't you know a good pun is its own reword?

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πŸ‘€︎ u/diggitygiggitycee
πŸ“…︎ Jan 21 2022
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My 4 year oldest favourit joke, which he very proudly memorized and told all his teachers.

Two muffins are in an oven, one muffin looks at the other and says "is it just me, or is it hot in here?"

Then the other muffin says "AHH, TALKING MUFFIN!!!"

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πŸ‘€︎ u/smoffatt34920
πŸ“…︎ Jan 22 2022
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Dropped my best ever dad joke & no one was around to hear it

For context I'm a Refuse Driver (Garbage man) & today I was on food waste. After I'd tipped I was checking the wagon for any defects when I spotted a lone pea balanced on the lifts.

I said "hey look, an escaPEA"

No one near me but it didn't half make me laugh for a good hour or so!

Edit: I can't believe how much this has blown up. Thank you everyone I've had a blast reading through the replies πŸ˜‚

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πŸ‘€︎ u/Vegetable-Acadia
πŸ“…︎ Jan 11 2022
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A short guide to understanding bridges, wrapped tokens, and interoperability platforms

If you've been around here for a bit, you've probably heard mention of bridges and/or wrapped tokens (like wrapped Bitcoin, or WBTC). Here's an explanation of what these bridges do, how they do it, and what their relationship with wrapped tokens is.

What are Bridges

In short, bridges allow us to take assets from one blockchain and move them onto another chain where they are not native. For example, the Bitcoin-Ethereum bridge allows us to move our BTC from the Bitcoin network onto the Ethereum network, making it possible for your BTC to interact with the entire world of DeFi on Ethereum. For instance, this would allow you to use a DEX to buy ChainLink, an erc20 token native to the Ethereum network, with Bitcoin, which is not native to the Ethereum network. As another example, it would allow you to lend your BTC on Aave, an Ethereum-based lending protocol.

Before bridges, there was no possible way for assets on one blockchain to interact with another blockchain. Each network was isolated.

Now, you might be thinking "but we could already buy LINK with BTC on any CEX". Yes, this is true. But when we do, the LINK and BTC do not actually interact or even know about each other. No transaction actually occurs on-chain, for either of the two chains involved. Instead, the CEX just has one wallet for every major chain, and holds a giant pile of each of its assets in those wallets. When you trade a BTC/LINK pair on the CEX, all it is really doing is crediting your account with a voucher for some of the LINK in their huge LINK pool, and debiting you a voucher for some of the BTC in their BTC pool. This is how they make it seem like you can directly swap BTC and LINK despite them being on different chains.

With bridges, you can actually interact across chains. This is a big deal in the world of DeFi.

How they Work

A wrapped coin is a token that lives on one network (usually Ethereum) while representing a coin from another network.

Let's use as an example the biggest wrapped coin in crypto: wrapped Bitcoin. If you want to mint some WBTC, you would send your BTC to the Bitcoin/Ethereum bridge. Your BTC would get locked up at the bridge, and the equivalent amount of WBTC would be minted on the Ethereum side of the bridge.

Once you have your WBTC on the Ethereum side, you can do anything you want with it in the Ethereum ecosystem. It is simply an erc20 token, so you can do with it anything you could do with any other token on Ethereum.

Whenever you want to

... keep reading on reddit ➑

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πŸ‘€︎ u/pseudoHappyHippy
πŸ“…︎ Nov 08 2021
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What starts with a W and ends with a T

It really does, I swear!

πŸ‘︎ 6k
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πŸ‘€︎ u/PsychedeIic_Sheep
πŸ“…︎ Jan 13 2022
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What are the most overpowered general math techniques?

By this I mean approaches that can very effectively solve a lot of hard sounding problems in various fields once you get said problems in the 'right form'.

E.g. various linear algebra inequalities, or for instance the eigenvalue bound from quadratic forms.

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πŸ‘€︎ u/peeadic_tea
πŸ“…︎ Oct 31 2021
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Why is mohit tyagi maths considered so good?

I get that he teaches concepts well but he does very few good questions his lectures. Most of the ones he does are straight forward. I do not think that there is anything special about the way he teaches concepts. Compared to channels like unacademy, where there are question sessions in which you can not only understand the concepts but also understand the thought process that was used to reach the solution. Everyone says that MT sir teaches upto advanced level but most of the questions he covers are of mains level or below and he does not host seperate question sessions. I mean, I can understand 95 percent of the concepts from the book itself, I mostly watch youtubers so that I can learn problem solving. His videos are 7-8 year old with terrible quality and handwriting.

MT sir does not even bother to find questions. When he taught location of roots, he did not even bother to find proper questions. He just used random values due to which most of the questions has no answers. (There are no values that satisfy the condition.) The videos are just low effort compared to others.

I have only watched his quadratic and sequences playlist till now. Maybe I am missing something. Are there any disadvantages from studying from other youtubers. I do not want to offend anyone. Different people have different ways in which they learn. I just want to know because since everyone seems to recommend his videos, there must be something really good in them.

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πŸ“…︎ Jan 11 2022
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