UwU brat mathematician behavior

I have no idea what they're talking about, but I do love a happy ending.

I love how that wannabe 4chan nerd just got outnerded in the comment section

Learned a new word, Hate ****

Anger bang

Can somebody ELI5 this for my troglodyte writer brain?

Integrals are an expression that basically has an opening symbol, and an operation that is written at the end of it that is used also as a closing symbol, looks kinda like:$ {some function of x} dx.
The person basically said "the dx part can be written at the start also, and that would make my so mad :3": $ dx {some function of x}.
This gets their so mad because understandably this makes the notation non-standard and harder to read, also you'd have to use parentheses if the expression doesn't just end at the function.
Note: dollar used instead of integral symbol
An Integral is usually written like ∫ f(x) dx or alternatively as df(x)/dx. Please note that this is just a way to apply the Operation Integration, like + applies the operation 'Addition'. There is no real multiplication or division.
But sometimes you can take a shortcut and treat dx as a multiplied constant. This is technically not correct, but under the right circumstances comes to the same solution as the proper way. This then looks like this ∫ f(y) dy/dx dx = ∫ f(y) dy
Another thing you can do is to move multiplicative constants from inside the Integral to in front of the Integral: ∫ 2f(x) dx = 2 ∫ f(x) dx. (That is always correct btw)
What anon did was combine those two things and basically write ∫ f(x) dx = dx ∫ f(x). Which is nonsensical, but given the above rules not easily disproven.
This is more or less the same tactic used by internet trolls just in a mathy way. Purposefully misinterpreting arguments and information, that cost the other party considerably more energy to discover and rebut. Hence the hate fuck.

operative?

Also mathematicians use i for imaginary, engineers use j. The story does not add up. I have never seen a single mathematician use j for imaginary.

Engineer here: mostly use i, but have seen j used plenty. First time I saw j used was by a maths professor.
- Interesting I never saw j from a maths person. Friends (from a decade ago!) in electronics eng dep said they use j because i was reserved for current. perhaps the latter depends on the department.
Cannot confirm, we always used i.
imaJinary
TIL engineers can't spell for shit.
As an EE, I used both. Def not a mathematician though. Fuck that, I just plug variables into programs now.
- I have both mechanical and electrical backgrounds. MEs like I, EEs prefer j

$\int dx f(x)$ is standard notation for physicists

But the post says before the integral, so I understand what they did would be $dx \int f(x)$, which is disgusting
Yes but everyone knows physicists like weird notations

Me, a language/arts person: "Huh?"

Web dev here. "Huh?"
- Webdev not knowing anything about computer science (and thus mathematics)? I am shocked. Shocked!
Medical here. "Huh?"
- Moron here. "Huh?"

I think rather d/dx is the operator. You apply it to an expression to bind free occurrences of x in that expression. For example, dx²/dx is best understood as d/dx (x²). The notation would be clear if you implement calculus in a program.

If not fraction, why fraction shaped?
- If you use exterior calculus notation, with d = exterior derivative, everything makes so much more sense

Thank you for the belly laugh!

Fake and gay.

No way the engineer corrects the mathematician for using j instead of i.

Right? They got that shit backwards. Op is a fraud. i is used in pure math, j is used in engineering.
As an engineer I fully agree. Engineers¹ aren't even able to do basic arithmetics. I even cannot count to 10.
¹ Except maybe Electrical engineers. They seem to be quite smart.
- Having worked with electrical engineers, some of them are quite smart, the rest have lead poisoning.
- Engineer here, I can definitely count to 10 tho
  0 1 10
- Electrical engineers are the ones that use j though (because i is used for current)
- 10? That’s the name some put to 1e1, right?
- Except maybe Electrical engineers.
  Yup, I can count just fine to the 10th number in a zero-indexed counting system: black, brown, red, orange, yellow, green, blue, violet, gray, white.
- The inner machinations of an electrical engineer is too complicated for me to understand, I think they might be thinking on a higher order to understand these circuits
  Thats why I barely passed my electrical engineering class lol
The mathematician also used "operative" instead of, uh, something else, and "associative" instead of "commutative"
- "operative" instead of, uh, something else
  I think they meant "operand". As in, in the way dy/dx can sometimes be treated as a fraction and dx treated as a value.
How do we know it's gay though? OP could be a girl (male)
- Because it's 4chan. And there are no women on the Internet on 4chan
- Newfag.
  (sorry! seemed like the appropriate 4chan reply)
- Sure OP is a girl. Guy In Real Life
My thoughts exactly lol

Is anyone doing anything tonight?

Something something distance calls for norm, not just squares.
||i||² + ||1||² = 2
Imagining your death. :P
But seriously, it's perfectly sensible when remember that i is just the mathematical representation of "left turn", just like -1 is the mathematical representation of "go backwards"-- and as we know, two left turns sends you backwards. So think about this triangle in the following way:
Imagine you are a snail, starting at the origin. Now imagine that you walk forward 1 step along the horizontal line. Then you turn 90° to the left to start walking along the vertical line, but then, because you need to walk i steps along this line you take another 90° turn to the left, which means that you are now walking backwards and you end up back at the origin. How far away from the origin are you? Zero steps.
no, d..do you have a plan?
This one made me laugh almost as much as the OP. Thank you!

As a physicist I can't understand why would anyone complain about a +jb or $\int dx f(x)$. Probably because we don't fuck

As a software dude I can see you wrote a regex, I just can't find out what you're trying to match.
- Pardon my denseness, but is this sarcasm? Since that is a TeX snippet.
  Why would a RegEx start with a $?
- Heeyy... So when you need to express something more, well, delicate than just code, you need to use math symbols. For that you can use tex expressions. Modern markdown supports it: just copy and paste the $..$ part into any render engine

sado-mathochist

Well done, truly

This is the kind of brat I can get behind. 😏

😏

Better plot than 50 Shades of Grey

hehe plot. getit? math and graphs and shit
- Lmfao kill yourself

Wait bottom mathematican is using j=√-1 instead of i and not the engineer? Because I'm EE gang, and all my homies use j.

The fun starts when you study quaternions
i^2 = j^2 = k^2 = ijk = −1
- This can't be real
That part also got me really confused. All the mathematicans I know use i while engineers use i or j depending on the kind of engineer. I've never seen a Pikachu engineer using anything other than j.
- OPs boyfriend is obviously an i engineer and hates j engineers. No one can stay angry at mathematicians - engineers on the other hand...
- Pikachu engineer
  That's a fucking favorite now. Keeping that in my back pocket.
[Lapsed] mechanical engineering gang checking in. I was also surprised. Though, tbh, I think it came down to personal preference of the professor more than field-wide consensus.
I agree. Clearly i is current. What is this i=√-1 nonsense.
a real mathematician would use (0, 1) instead of i

I believe the correct terminology is denominator mathematician.

NGL, this is hot.

I’m a mechanical engineering student with a math minor and I’m a switch so yeah, I’d take either side of this

Relationship goals

They both bottoms.

Hum... I don't think the integral "operator" applies by multiplication.

You can put the dx at the beginning of the integral, but not before it.

Physicists be like: whitness me
- Nobody on your link is treating the integral "operator" as multiplicative.
  dx \int f(x) is blatantly different from \int f(x) dx
If you were using nonstandard analysis with dx an infinitesimal you could put it outside I guess. Maybe with differential forms too?
- Switch it with a summation operator and see if it makes sense. The problem isn't the operation by itself, but the fact that the operator implies an argument application, like a function.
- In the context of differential forms, an integral expression isn't complete without an integral symbol and a differential form to be integrated.

Gods I wish I had a top to troll like this

Imagine a top that isn't math brained, giving you so much more opportunities to troll before they find out...and then when they do learn something you have been trolling them....
- No, in my experience people like that just end up trolling me because they have no frame of reference and don't care about reality. You can't troll somebody with math if they reject the idea of learning anything about or using math.

Physicist behavior

But physicists actually do that? They often write it like this: ∫ dx f(x) or this: ∫∫∫ dxdydz f(x,y,z)

Why are we still visiting literal pro-Nazi websites?

4chan is a largely fascist website but that doesn't mean every single screenshot is fascist or does something to promote it
- It normalizes their behavior instead of shunning it. Remember: If there’s one Nazi at the bar who hasn’t been kicked out, you’re at a Nazi bar.
Didn't realize you had to be a nazi in order to post on 4chan.
- If you are unaware of 4chan being a tool to push people towards fascism, you seriously need to do some more reading and learning. It is an explicit goal of the platform. Here is a random example of an article you can read. Wikipedia is also full of good information.