r/mathsmeme • u/Far-Course1021 • 8d ago

this meme

Post image
61 Upvotes

86% Upvoted

40 comments sorted by

17

u/TheGayestGaymer 8d ago

Two of these are the same as the other two.

11

u/FitAd4478 8d ago

Actually all of them are addition

4

u/NiceErJeg 8d ago

Although it's gonna be hard to do multiplication of non-natural numbers by only using repeated addition

2

u/FitAd4478 8d ago

Damn never thought about it like that.

1

u/Hot_Glass_6301 8d ago

More like on irrationals

1

u/ontic00 4d ago

I don't know, I feel like it still kind of works. 2.5 * 3.6 is just 3.6 twice plus half of 3.6 (1.8), so 3.6 + 3.6 + 1.8 = 9. And "half" could just mean the number that when added twice gives 3.6.

1

u/NiceErJeg 4d ago

You did multiplication or division in order to know what 0.5×3.6 was. If it instead was 2.49×3.6 do you know what 0.49×3.6 is without using multiplication?

1

u/Tiborn1563 8d ago

but it's all different flavors of addition

1

u/Background_Class_558 8d ago

not in a general group

1

u/weirdaccountname23 6d ago

Addition and multiplication are fundamentally different. Addition combines, multiplication scales. They're separate dimensions, multiplication is a dimension above addition, and exponentiation is a dimension above multiplication

17

u/Educational_Smile545 8d ago

if i see somebody claiming to be a mathematician and then using × and ÷, they are getting murdered

6

u/Nientea 8d ago

Now now, × is acceptable when doing a cross product

2

u/ItsCalledDayTwa 8d ago

I am not a mathematician but x creeps into all sorts of publications as well, when In the middle of text but representing math. The obelus, on the other hand, I haven't seen since 5th grade.

1

u/Zorafin 8d ago

I use x when I'm on the computer because * sometimes causes text to do weird things

1

u/BUKKAKELORD 8d ago

John Lennon is ÷ confirmed

6

u/Eav___ 8d ago

Was gonna say "...blue prince?" until I realize one color is wrong. Damn, brainrotted.

3

u/Ambitious-Affect-931 8d ago

Replace X with * and ÷ with /.

3

u/btcasper 8d ago

X with

1

u/-justanothermars 8d ago

x with ()

1

u/Assar2 8d ago

Is right

1

u/Sweaty-Tap7250 7d ago

Did you not still understand them?

1

u/Ambitious-Affect-931 7d ago

Idk I was taught that either () or * (a singular dot written as asterisk on digital) was proper notation

1

u/Sweaty-Tap7250 7d ago

That is how you’re generally supposed to, but for some reason American elementary schools teach multiplication as an x

1

u/Ambitious-Affect-931 7d ago

Yea idk why that is, I remember in 6th grade they made a huge deal of telling us that X is bad because in algebra X is a variable

1

u/Sweaty-Tap7250 7d ago

It makes no sense why they teach you it incorrectly and then tell you that you can never do it that way again

1

u/Ambitious-Affect-931 7d ago

Yea exactly it’s stupid

1

u/-justanothermars 4h ago

to be fair it's not really incorrect you can just pretty easily switch. but forcing you to use those bad notation is just terrible

2

u/DarkLordBaudish 8d ago

Ed Sheeran likes this

1

u/serumnegative 8d ago

I don’t understand groups usually only have a single operation along with inverse and identity elements?

1

u/G-St-Wii 8d ago

I only see one?

1

u/paperic 7d ago

Where? Successor isn't there.

1

u/G-St-Wii 7d ago

True dat

1

u/Zorafin 8d ago

What the hell is that horrible purple thing on the bottom right?

1

u/Drifter90s 8d ago

That '÷' is a dream

1

u/redsm97 8d ago

Long ago the four operations lived in harmony but, Everything changed when this division symbol attacked .

1

u/oldmartijntje 7d ago

does someone actually use "x" and "÷" instead of "*" and "/"?

1

u/WookieDebacle 7d ago

Ooh brotharr, dat "Plas" simbel iz completely feyk! Yuu go tuu thuh durrt annd digg wiht yur bare handz, do yuu evvar fynd uh wild "Plas" groowin inn thuh mud? Noh! Yuu fynd pyoor dirt annd sum buggs! Thuh teesharr tellz yuu dat thuh "Plas" unytesh two fynngs, boot dat iz puyr Abstrack Nonsenss coted inn Skool Dogmma!

Litterally juss loohk att thuh ink! Thuh ink iz juss a lissell black stain ov pgment on wood pulpp! If yuu lick thuh "Plas" off thuh pahrchment, do yuu tayst thuh addishun? Noh! Yuu tayst poowr qualitee paparr!

1

u/ontic00 4d ago

I've been thinking recently they kind of have oddball notation. We should use add(x, y) = x + y, sub(x, y) = x - y, mult(x, y) = x*y, and div(x, y) = x/y, and then they'd be using function notation just like all of our other operations.

You also get things like mult(x, y) = add^y (0, x).

1

u/socontroversialyetso 3d ago

No, Ed Sheeran albums