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.
UwU brat mathematician behavior
Submitted 3 days ago by fossilesque@mander.xyz to science_memes@mander.xyz
https://mander.xyz/pictrs/image/a9b2c785-b0aa-4481-a49c-7f7fc6e40b5f.png
Comments
PM_ME_VINTAGE_30S@lemmy.sdf.org 3 days ago
GandalfTheDumb@lemmy.world 3 days ago
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.
Ganbat@lemmy.dbzer0.com 3 days ago
Pikachu engineer
That’s a fucking favorite now. Keeping that in my back pocket.
ryedaft@sh.itjust.works 2 days ago
OPs boyfriend is obviously an i engineer and hates j engineers. No one can stay angry at mathematicians - engineers on the other hand…
wetbeardhairs@lemmy.dbzer0.com 3 days ago
The fun starts when you study quaternions
i^2 = j^2 = k^2 = ijk = −1
bisby@lemmy.world 3 days ago
I agree. Clearly i is current. What is this i=√-1 nonsense.
grysbok@lemmy.sdf.org 3 days ago
[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.
affiliate@lemmy.world 3 days ago
a real mathematician would use
(0, 1)
instead ofi
lemmy_outta_here@lemmy.world 3 days ago
NGL, this is hot.
AnarchoEngineer@lemmy.dbzer0.com 3 days ago
I’m a mechanical engineering student with a math minor and I’m a switch so yeah, I’d take either side of this
iAvicenna@lemmy.world 2 days ago
operative?
SanicHegehog@lemmy.world 2 days ago
imaJinary
TIL engineers can’t spell for shit.
sartalon@lemmy.world 2 days ago
As an EE, I used both. Def not a mathematician though. Fuck that, I just plug variables into programs now.
the_tab_key@lemmy.world 2 days ago
I have both mechanical and electrical backgrounds. MEs like I, EEs prefer j
zeca@lemmy.eco.br 2 days ago
The associativity thing also doesnt make sense.
Unlearned9545@lemmy.world 2 days ago
Engineer here: mostly use i, but have seen j used plenty. First time I saw j used was by a maths professor.
iAvicenna@lemmy.world 2 days ago
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.
jenesaisquoi@feddit.org 2 days ago
Cannot confirm, we always used i.
Kolanaki@pawb.social 3 days ago
Me, a language/arts person: “Huh?”
axEl7fB5@lemmy.cafe 2 days ago
Web dev here. “Huh?”
jenesaisquoi@feddit.org 2 days ago
Webdev not knowing anything about computer science (and thus mathematics)? I am shocked. Shocked!
lena@gregtech.eu 2 days ago
Fullstack dev here. “Huh?”
Sterile_Technique@lemmy.world 3 days ago
Medical here. “Huh?”
nfamwap@feddit.uk 2 days ago
Moron here. “Huh?”
Almacca@aussie.zone 2 days ago
I have no idea what they’re talking about, but I do love a happy ending.
laserm@lemmy.world 2 days ago
Why would a mathematician use j for imaginary numbers and why would engineer be mad at them?
CyanideShotInjection@lemmy.world 2 days ago
The only thing I can think of is that the OP studied electrical engineering at some point. But it’s a 4chan story so probably fake anyway.
dandelion@lemmy.blahaj.zone 1 day ago
fake and gay?
prex@aussie.zone 2 days ago
I think it might be the wrong way around: Engineers like to use j for imaginary numbers because i is needed for current.
AlboTheGuy@feddit.nl 2 days ago
Mathematicians are taught to be elastic with notation, because they tend to be taught many different interpretations of the same theory.
On the other hand engineers use more strict and consistent notation, their classes have a more practical approach.
Using the same notation makes it faster to read and apply math, a more agile approach helps with learning new theories and approaches and with being creative.
CosmicTurtle0@lemmy.dbzer0.com 3 days ago
This is the kind of brat I can get behind. 😏
_g_be@lemmy.world 3 days ago
😏
_stranger_@lemmy.world 3 days ago
sado-mathochist
Seasm0ke@lemmy.world 3 days ago
Well done, truly
burntbacon@discuss.tchncs.de 2 days ago
Thado-mathocist. The real chad all along.
It makes me wonder if somewhere out there in a multiverse, a community of lisping incels all collectively draw the chad wojak as as an aramaic looking dude.
ShinkanTrain@lemmy.ml 3 days ago
Randelung@lemmy.world 2 days ago
Something something distance calls for norm, not just squares.
||i||² + ||1||² = 2
bitcrafter@programming.dev 2 days ago
Imagining your death.
davidagain@lemmy.world 2 days ago
This one made me laugh almost as much as the OP. Thank you!
vivalapivo@lemmy.today 3 days ago
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
RamblingPanda@lemmynsfw.com 3 days ago
As a software dude I can see you wrote a regex, I just can’t find out what you’re trying to match.
vivalapivo@lemmy.today 2 days ago
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
AusatKeyboardPremi@lemmy.world 2 days ago
Pardon my denseness, but is this sarcasm? Since that is a TeX snippet.
Why would a RegEx start with a
$
?
Phoenix3875@lemmy.world 3 days ago
I think rather
d/dx
is the operator. You apply it to an expression to bind free occurrences ofx
in that expression. For example,dx²/dx
is best understood asd/dx (x²)
. The notation would be clear if you implement calculus in a program.bhamlin@lemmy.world 2 days ago
If not fraction, why fraction shaped?
Amir@lemmy.ml 2 days ago
If you use exterior calculus notation, with d = exterior derivative, everything makes so much more sense
yetAnotherUser@discuss.tchncs.de 2 days ago
I just think of the definition of a derivative.
d
is just an infinitesimally small delta. Sody/dx
is literally justlim (∆ -> 0) ∆y/∆x
. which is the same aslim (x_1 -> x_0) [f(x_0) - f(x_1)] / [x_0 - x_1]
.Note:
∆ -> 0
isn’t standard notation. But writing∆x -> 0
requires another step of thinking:y = f(x)
therefore∆y = ∆f(x) = f(x + ∆x) - f(x)
so you only need∆x
approaching zero. But I prefer thinkingd = lim (∆ -> 0) ∆
.
OsrsNeedsF2P@lemmy.ml 3 days ago
Better plot than 50 Shades of Grey
xx3rawr@sh.itjust.works 2 days ago
hehe plot. getit? math and graphs and shit
OsrsNeedsF2P@lemmy.ml 2 days ago
Lmao kill yourself
BudgetBandit@sh.itjust.works 2 days ago
I love how that wannabe 4chan nerd just got outnerded in the comment section
selokichtli@lemmy.ml 3 days ago
They both bottoms.
edinbruh@feddit.it 3 days ago
Relationship goals
itslilith@lemmy.blahaj.zone 2 days ago
$\int dx f(x)$ is standard notation for physicists
Thordros@hexbear.net 3 days ago
I believe the correct terminology is denominator mathematician.
Etterra@discuss.online 2 days ago
Can somebody ELI5 this for my troglodyte writer brain?
marcos@lemmy.world 3 days ago
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.
answersplease77@lemmy.world 2 days ago
so after he angered his bf he got fucked as in trouble with him or sex? raped? wtf lol
djsoren19@lemmy.blahaj.zone 3 days ago
Gods I wish I had a top to troll like this
jsomae@lemmy.ml 1 day ago
My initial thought was that it’s surprising that the engineer is using i whereas the mathematician is using j. But I know some engineers who are hardcore in favour of i. No mathematicians who prefer j though. So if such an engineer were dating a mathematician of all people who used j, I could see that being ♠ .
woodenghost@hexbear.net 3 days ago
But physicists actually do that? They often write it like this: ∫ dx f(x) or this: ∫∫∫ dxdydz f(x,y,z)
davidagain@lemmy.world 2 days ago
Thank you for the belly laugh!
ayyy@sh.itjust.works 3 days ago
Why are we still visiting literal pro-Nazi websites?
tfowinder@beehaw.org 2 days ago
Learned a new word, Hate ****
Droggelbecher@lemmy.world 3 days ago
Physicist behavior
Zagorath@aussie.zone 3 days ago
Fake and gay.
No way the engineer corrects the mathematician for using j instead of i.
LeFrog@discuss.tchncs.de 3 days ago
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.
boonhet@sopuli.xyz 3 days ago
Engineer here, I can definitely count to 10 tho
0 1 10
gnutrino@programming.dev 3 days ago
Electrical engineers are the ones that use j though (because i is used for current)
thomasloven@lemmy.world 3 days ago
10? That’s the name some put to 1e1, right?
exasperation@lemmy.dbzer0.com 3 days ago
Yup, I can count just fine to 10: black, brown, red, orange, yellow, green, blue, violet, gray, white.
Fedizen@lemmy.world 2 days ago
Having worked with electrical engineers, some of them are quite smart, the rest have lead poisoning.
Baguette@lemmy.blahaj.zone 3 days ago
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
Hoimo@ani.social 3 days ago
How do we know it’s gay though? OP could be a girl (male)
SippyCup@feddit.nl 3 days ago
Because it’s 4chan. And there are no women on the Internet on 4chan
floquant@lemmy.dbzer0.com 3 days ago
Sure OP is a girl. Guy In Real Life
ByteJunk@lemmy.world 3 days ago
Newfag.
(sorry! seemed like the appropriate 4chan reply)
TheSlad@sh.itjust.works 3 days ago
Right? They got that shit backwards. Op is a fraud. i is used in pure math, j is used in engineering.
Chakravanti@monero.town 2 days ago
That’s hilarious. You’re not seeing what’s going on backwards just like that (as I point at the point going nowhere shitty) in an equation that is finding as many clAEver ways to say something you actually not caring about talking about.
That’s like, "How many time van express the only thing that van’t be done until the 'verse itself tries to do what can’t be done and sever your…
…Oh, I see…you don’t have ([of course, because you can’t have to give {is}) nothing)] to give.
Unable to sea time doesn’t mean we can’t see(k)ER the mAETh.ac(k).cc(k).08
The only thin(g):(k) that doesn’t ever be never, is not at alla hack(g)in(g).G your lackthereof to divi…
kogasa@programming.dev 3 days ago
The mathematician also used “operative” instead of, uh, something else, and “associative” instead of “commutative”
Zagorath@aussie.zone 2 days ago
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.
NeatNit@discuss.tchncs.de 3 days ago
My thoughts exactly lol