LadyButterfly she/herNov 27
I dunno
Show threadSSUPIINov 27

I feel like I am getting trolled

Isn’t 17 the actual right answer?

Show threadpixeltreeNov 27

Inside the parens first, so it becomes 2 + 5*3

Then tou do multiplication before addition, so 2 + 15

Then addition, so 17

Show threadSSUPIINov 27
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.
Show threadJackbyDevNov 27

They did the joke wrong. To do it right you need to use the ÷ symbol. Because people never use that after they learn fractions, 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. So people get used to grouping everything around the division operator as if they’re in parentheses.

Show thread💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱Dec 14

Because people never use that after they learn fractions,

Yes they do, because not every division is a fraction

Show threadJackbyDevDec 14

math.berkeley.edu/~wu/order5.pdf

Show thread💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱Dec 14

math.berkeley.edu/~wu/order5.pdf

I already said he was wrong about that. Quoting him saying it doesn’t change that he’s wrong about it

Show threadJackbyDev
Take it up with Berkeley then.
Dec 14 at 6:30pmWeb
Show thread💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱Dec 15

Take it up with Berkeley then

What for? You’re only the second person ever to have quoted him. You’re not the first person to refuse to look in Maths textbooks though 🙄

Show threadJackbyDevDec 15
Take it up with Berkeley.
Show thread💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱Dec 15

Take it up with Berkeley

Says person refusing to look in Maths textbooks 😂

Show threadJackbyDevDec 15
I cannot stress this enough. If you have a problem with that, contact the author or Berkeley, not me.
Show thread💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱Dec 15

I cannot stress this enough. If you have a problem with that, contact the author or Berkeley, not me

I cannot stress this enough - look in Maths textbooks, not random University blogs 😂

Show threadJackbyDevDec 15
Tell them, not me.
Show thread💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱Dec 15

Tell them, not me

You’re the one commenting without reading Maths textbooks

Show threadJackbyDevDec 15
Go tell Berkeley I did that.
Show thread💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱Dec 15

Go tell Berkeley I did that

What for? They don’t care if you’re Mathematically illiterate

Show threadmindbleachDec 15
You can stop humoring this broken robot. Especially when the context is ‘yeah I already said this textbook is wrong, but I am better than you because you need to read this textbook.’
Show threadJackbyDevDec 15
They seem to believe that and on the 8th day God made the one true objective order of operations that all humans use and agree on.
Show threadmindbleachDec 15

Except for that time the definition changed 130 years ago. Which is not a rule! It’s notation, or syntax, or possibly sometimes a rule. Whichever one lets them sneer hardest.

I tried explaining RPN to them a year ago. They still insist there’s parentheses in it. Today they called it an “app.”

Dogmatic patience vampire is still trying to bait me into further wasted effort.

Show threadJackbyDevDec 15

Wowww. Insisting that they’re good at math. I distinctly remember learning that RPN doesn’t need parentheses in college.

reverse Polish calculators do not need expressions to be parenthesized

en.wikipedia.org/wiki/Reverse_Polish_notation

But, you know, anyone can edit Wikipedia. Someone probably put that there who hasn’t opened a math textbook.

Reverse Polish notation - Wikipedia

Show threadmindbleachDec 15

Oh of course. The sky isn’t blue unless that’s written in a maths textbook.

And if you look up and see stars, it’s still blue, because it’s written in a maths textbook! Are you saying a teacher could be wrong?!, smug emoji, crying emoji, roll-eyes emoji?