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💡𝚂𝗆𝖺𝗋𝗍𝗆𝖺𝗇 𝙰𝗉𝗉𝗌📱

@ SmartmanApps @programming.dev

Posts
1220
Comments
1145
Joined
2 yr. ago

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  • They’re definitely not

    Says person who definitely can't give a single example of any that aren't 🙄

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  • Just patently untrue,

    Maths textbooks are patently untrue?? 😂 I guess you think Earth is flat too

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  • If you believe the article is incorrect, submit your corrections to Wikipedia

    You know they've rejected corrections by actual Maths Professors right? Just look for Rick Norwood in the talk section. Everyone who knows Maths knows Wikipedia is wrong, and looks in the right place to begin with - Maths textbooks

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  • 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 🙄

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  • I don’t think you understand mathematics above the 7th-grade level you brag about teaching

    I don't think you understand any of it, not even Year 7

    No bona fides will excuse how you’ve acted; you have to be better

    says person who refuses to look in Maths textbooks

    RPN does not have parentheses

    in the foreground. In the background it does or it would give wrong answers. You understand that apps can do things that you don't see, right??

    but different

    Only the notation is different, the rules are the same

    they deserve to know exactly how small-minded and stubborn you are

    says the person who refuses to look in Maths textbooks 😂

    as if they define knowledge

    Textbooks do indeed define the notation and rules. 1+1=2 is defined as the notation to use to show that I had 1 thing and now I have 2 things

    your own visible failure to teach anyone anything

    says person ignoring all the people who actually did learn from me. That would be the people who are open to being wrong about how they thought it was done

    Nobody’s walking away from these interactions like ‘oh thanks, good to know, that’s perfectly clear now.’

    Yes they are! 😂

    you’re assigning Buddha nature to parentheses

    No, just literal textbook definition, which you refuse to look at 😂

    1 2 + 3 * is not an equation with parentheses

    So the app adds them in the background. Do you think apps don't know how many "a" you're talking about if you don't write 1a? Guess what, it knows in the background that a=1a, and that the 1 in 1-2-3 is +1, etc. Not typing them in doesn't mean they aren't being added

    The first time I explained this to you, you had never heard of it.

    yet again you seem to have me confused with someone else. I have no idea what you're talking about

    You are a

    Maths teacher

    Trying to ‘no u’ about your absence of self-awareness does not work

    says person who refuses to look in Maths textbooks

    because you didn’t predict me

    gaslighters gonna gaslight - there's nothing unpredictable about that

    What you’re doing is

    teaching the rules of Maths

    If this is how you teach children, it’s enforced learning by rote

    No it isn't, because they, having seen it also in the textbook, understand how it works

    their understanding of even basic mathematics is permanently

    improved, because they don't sit there going "Nah nah nah, nah nah nah, I'm not listening and not looking in the textbook!" 😂

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  • The rules are socially agreed upon

    Nope! Universal laws.

    They are not a mathematical truth.

    Yes they are! 😂

    There is nothing about the order of multiple different operators in the definition of the operators themselves

    That's exactly where it is. 2x3 is defined as 2+2+2, therefore if you don't do Multiplication before Addition you get wrong answers

    you can order those however you like.

    No you can't! 😂 2+3x4=5x4=20, Oops! WRONG ANSWER 😂

    All that matters is just what calculation it is that you’re after

    And if you want the right answer then you have to obey the order of operations rules

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  • Yeah, but even worse, you’re just talking about schools

    I'm talking about anyone at all in the U.S. is allowed to teach Maths without any Maths qualifications

    You forgot about all the kids being home schooled

    That happens in other countries too, and yet it's the U.S. which has been sliding down the world rankings for more than a decade, the country that doesn't require Maths teachers to have Maths qualifications.

    Also, it’s kinda obvious the rules of math aren’t different in the US

    That's right, as proven by U.S. Maths textbooks

    If people don’t know how to use math properly, the issue clearly is the education and not math itself

    Partly right. there's also people who just outright forgot the rules.

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  • only one valid notation

    Only one valid set of rules you mean. Notation varies by country

    I warned folks about your cocksure confusion of notation and rules

    says person who is confused about the difference between notation and rules 😂

    You’re so confused about notation versus rules

    Nope! That's you

    RPN must have parentheses, somewhere, somehow, because they’re in the One True

    Rules There you go confusing notation with rules again

    I don’t think you understand being wrong, as a concept

    says person who refuses to look in Maths textbooks 😂

    Your brain slides right off it and circles back to a sequence of words that lets you be smug

    And here you are writing a bunch of words and no Maths textbooks 😂

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  • Probably the part where you said how we write expressions is different from the underlying maths

    Yep, the underlying Maths is the same everywhere, because the rules are universal, but different countries have different notations, it's still the same Maths

    Because words mean things

    And you seem to be having trouble understanding the difference between "notation" and "rules"

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  • Post picture declaiming brackets as a multiplication symbol,

    What do you think the "B" step in BEDMAS is for?? 😂

    proceeds to solve the problem to the exact same solution using distributive law to

    Distribute the coefficient over the terms inside the brackets

    Fucking genius

    Says someone who can't tell the difference between Distributing, 2(1+3)=(2+6), and Multiplication, 2x(1+3)=2x4, 1/(2+6)=(1/8), 1/2x4=2

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  • Ohhh, so there is a difference between what’s in math(s) books and the underlying laws of reality

    No, and I have no idea where you got that idea! 😂

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  • In mathematics, a product is the result of multiplication,

    or Factoristion, ab+ac=a(b+c) <== a Product of a and (b+c)

    I mean, I don’t like to argue about this

    And yet here you are arguing with someone who is and is a Maths teacher

    there is an implied multiplication there.

    Nope! It's a Term/Product. There's no such thing as "implied multiplication" - you won't find it in any Maths textbook

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  • Which you said changed 130 years ago

    The definition of Division changed more than 130 years ago. a+b/c+d originally meant (a+b)/(c+d), but that limited you to one division per expression, so they changed the definition to be a+b/c+d=a+(b/c)+d, which brought it into line with all the other operators - the underlying Maths never changed, just the way we write expressions did

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  • https://en.wikipedia.org/wiki/Order_of_operations

    isn't a Maths textbook

    In mathematics and computer programming, the order of operations is a collection of conventions

    and rules 🙄 Haven't even got past the first sentence you quoted and it's already wrong

    These conventions

    Rules

    but some programming languages and calculators

    May disobey the rules and give wrong answers, like Texas Instruments calculators

    With math, you can invent your own notation if you like

    Yep, but you cannot invent your own rules 🙄

    This is done often.

    No it isn't.

    And if it makes sense, you can also change the order of operation

    No you can't, or you get wrong answers, like Texas Instruments calculators

    The notation you learn in school is just a common one, but other notations are equally valid and can be useful

    But the rules are universal. You seem to be confusing notation with the rules

    Therefore this kind of question is not a pure math question

    Yes it is

    what kind of conventions or notations people want to use

    We can see for ourselves quite clearly what notation they have used. There's no mystery or debate about it

    The context is what allows the math question to have a single answer

    The rules of Maths is what gives it a single answer - that's what they're for! 😂

    The rules of math itself are much more fundamental and they don’t care about how people decided to write formulas down.

    Yep, one of which is The Distributive Law, a(b+c)=(ab+ac).

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  • Yes it does

    Says person who can't cite a single example of it depending on the language 🙄

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  • Sorry, your realm does not extend into English

    Sorry, it most definitely does when it comes to how English is used in Maths

    It’s tangential to mathematics, but it isn’t mathematics

    The way we say Mathematical things is 100% Maths

    There’s absolutely nothing you can improve on?

    I can improve some badly written textbooks. Probably every Maths teacher can.

    Has a teacher ever been wrong (or just uninformed) about a topic in a subject they teach?

    Yes, ones who haven't looked in the textbook which seems to be the case with a lot of unqualified U.S. Maths teachers

    Does every English teacher know the content of every book?

    Probably the content of every book they teach 🙄

    No one knows everything about a subject

    Teachers do. It comes from teaching the same thing year after year after year

    Anyway, this isn’t your subject!

    Yes it is! 😂

    This is English, not math

    It's Mathematical English

    Do you see any formulas, proofs, or equations in these comments?

    Do you see words in Maths textbooks? And the definitions of them? 🙄

    What don’t you get?

    Why you keep insisting that Maths textbooks are wrong

    It being in an algebra textbook does not limit it to the realm of algebra

    And NOT being in any arithmetic book means it's not part of Arithmetic 🙄

    Numbers are in that textbook too

    Yep, both Arithmetic and Algebra, as opposed to a(b+c) which is only in Algebra books.

    If I’m wrong, I’d love to see the citation

    Says person who can't cite any Arithmetic books it's in 🙄

    Anyway, unless you provide that proof at the end there

    Already gave it in the previous post... which you didn't look at 🙄

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  • You already said that to me

    And you're still ignoring it

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  • Because division is multiplication

    No it isn't.

    and subtraction is addition

    And you still have to do both

    2/2 is the same as 2*½

    They're equal in value, they're not the same

    2-2 is the same as 2+(-2)

    You got that the wrong way around. Brackets have only been used in Maths for a few centuries now

    Well, as I already said multiple times: Division = Multiplication

    And you were wrong every time you said it.

    therefore they would be doing them together

    Not if you left them out of the mnemonic and they didn't know when to do them

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