Fake and gay.
No way the engineer corrects the mathematician for using j instead of i.
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.
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.
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
Sure OP is a girl. Guy In Real Life
Newfag.
(sorry! seemed like the appropriate 4chan reply)
The mathematician also used "operative" instead of, uh, something else, and "associative" instead of "commutative"
Right? They got that shit backwards. Op is a fraud. i is used in pure math, j is used in engineering.
My thoughts exactly lol
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.
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.
Pikachu engineer
That's a fucking favorite now. Keeping that in my back pocket.
The fun starts when you study quaternions
i^2 = j^2 = k^2 = ijk = −1
This can't be real
They're actually very useful: https://en.wikipedia.org/wiki/Quaternion
(...I think you may have gotten whooshed...)
It gets worse actually. You can define a number system using any power of 2 amount of i-like units in a similar relationship to quaternions using the Cayley-Dickson construction
Fascinatingly, you lose some property of the algebra at each step. Quaternions aren't commutative: ABC != CBA. Octonians aren't associative: (AB)C != A(BC). Once you get into 16 i's with subscripts, it really gets crazy.
(Also, I just got the joke. Damnit @HappyFrog@lemmy.blahaj.zone your serious answer threw me off!)
I agree. Clearly i is current. What is this i=√-1 nonsense.
sado-mathochist
Well done, truly
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
Is anyone doing anything tonight?
no, d..do you have a plan?
Something something distance calls for norm, not just squares.
||i||² + ||1||² = 2
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.
Me, a language/arts person: "Huh?"
Web dev here. "Huh?"
Medical here. "Huh?"
This is the kind of brat I can get behind. 😏
😏
I have no idea what they're talking about, but I do love a happy ending.
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.
Why would a mathematician use j for imaginary numbers and why would engineer be mad at them?
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.
Better plot than 50 Shades of Grey
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?
Relationship goals
$\int dx f(x)$ is standard notation for physicists
I love how that wannabe 4chan nerd just got outnerded in the comment section
They both bottoms.
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
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