Yeah I know that. But I was feeling confused as to why it was here. That’s why I was feeling trolled, because it made me doubt basic math for being posted in a memes community.
They did the joke wrong. To do it right you need to use the ÷ symbol. Because people never use that after they learn fraction, people treat things like a + b ÷ c + d as
a + b
-----
c + d
Or (a + b) ÷ (c + d) when they should be treating it as a + (b ÷ c) + d.
That’s the most common one of these “troll.math” tricks. Because notating as
a + b + d
-
c
Is much more common and useful. Do people get used to grouping everything around the division operator as if they’re in parentheses.
Now that’s a good troll math thing because it gets really deep into the weeds of mathematical notation. There isn’t one true order of operations that is objectively correct, and in top of that, that’s hardly the way most people would write that. As in, if you wrote that by hand, you wouldn’t use the / symbol. You’d either use ÷ or a proper fraction.
Personally, I’d call that 36 as written given the context you’re saying it in, instead of calling it 1. But I’d say it’s ambiguous and you should notate in a way to avoid ambiguities. Especially if you’re in the camp of multiplication like a(b) being different from ab and/or a × b.
The P in PEMDAS means to solve everything within parentheses first; there is no “distribution” step or rule that says multiplying without a visible operator other than parentheses comes first. So yes, 36 is valid here. It’s mostly because PEMDAS never shows up in the same context as this sort of multiplication or large fractions
Well, now you might be running into syntax issues instead of PEMDAS issues depending on what they’re confused about. If it’s 12 over 2*6, it’s 1. If it’s 12 ÷ 2 x 6, it’s 36.
A lot of people try a bunch of funky stuff to represent fractions in text form (like mixing spaces and no spaces) when they should just be treating it like a programmer has to, and use parenthesis if it’s a complex fraction in basic text form.
Treat a + b/c + d as a + b/(c + d) I can almost understand, I was guilty of doing that in school with multiplication, but auto-parenthesising the first part is really crazy take, imo
SSUPII@sopuli.xyz 1 month ago
Yeah I know that. But I was feeling confused as to why it was here. That’s why I was feeling trolled, because it made me doubt basic math for being posted in a memes community.
JackbyDev@programming.dev 1 month ago
They did the joke wrong. To do it right you need to use the ÷ symbol. Because people never use that after they learn fraction, people treat things like a + b ÷ c + d as
Or (a + b) ÷ (c + d) when they should be treating it as a + (b ÷ c) + d.
That’s the most common one of these “troll.math” tricks. Because notating as
Is much more common and useful. Do people get used to grouping everything around the division operator as if they’re in parentheses.
SmartmanApps@programming.dev 3 weeks ago
Yes they do, because not every division is a fraction
JackbyDev@programming.dev 3 weeks ago
math.berkeley.edu/~wu/order5.pdf
Image
CannonFodder@lemmy.world 5 weeks ago
Or
12 / 2(6) And trying to argue this is 36.
JackbyDev@programming.dev 5 weeks ago
Now that’s a good troll math thing because it gets really deep into the weeds of mathematical notation. There isn’t one true order of operations that is objectively correct, and in top of that, that’s hardly the way most people would write that. As in, if you wrote that by hand, you wouldn’t use the
/symbol. You’d either use ÷ or a proper fraction.It’s a good candidate for nerd sniping.
Personally, I’d call that 36 as written given the context you’re saying it in, instead of calling it 1. But I’d say it’s ambiguous and you should notate in a way to avoid ambiguities. Especially if you’re in the camp of multiplication like
a(b)being different fromaband/ora × b.Feathercrown@lemmy.world 5 weeks ago
The P in PEMDAS means to solve everything within parentheses first; there is no “distribution” step or rule that says multiplying without a visible operator other than parentheses comes first. So yes, 36 is valid here. It’s mostly because PEMDAS never shows up in the same context as this sort of multiplication or large fractions
MotoAsh@piefed.social 5 weeks ago
Well, now you might be running into syntax issues instead of PEMDAS issues depending on what they’re confused about. If it’s 12 over 2*6, it’s 1. If it’s 12 ÷ 2 x 6, it’s 36.
A lot of people try a bunch of funky stuff to represent fractions in text form (like mixing spaces and no spaces) when they should just be treating it like a programmer has to, and use parenthesis if it’s a complex fraction in basic text form.
sukhmel@programming.dev 5 weeks ago
Treat
a + b/c + dasa + b/(c + d)I can almost understand, I was guilty of doing that in school with multiplication, but auto-parenthesising the first part is really crazy take, imoSmartmanApps@programming.dev 3 weeks ago
No don’t. That rule was changed more than 130 years ago. a+b/c+d=a+(b/c)+d, Division before Addition
JackbyDev@programming.dev 5 weeks ago
That’s a really odd way to parse it.
Zephorah@discuss.online 1 month ago
Alternatively, the poster calculated the wrong answer, thus assuming this guy was wrong.
Ghyste@sh.itjust.works 1 month ago
Because OP posts garbage to all the meme communities.
DragonTypeWyvern@midwest.social 1 month ago
This shit take got deleted right in front of my eyes
The system works
SSUPII@sopuli.xyz 1 month ago
Oh so just like me on !lemmyshitpost@lemmy.world
pixeltree@lemmy.blahaj.zone 5 weeks ago
Gotcha gotcha, sorry