• PeriodicallyPedantic@lemmy.ca
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    14 days ago

    Ok, then explain prefix and postfix, where these conventions don’t apply. How can these be rules of math when they didn’t universally apply?

    Says someone who didn’t rearrange "PEMDAS

    The order of operations tells us how to interpret an equation without rearranging it. When you pick a different convention, you need to rearrange it to get the same answer. What you did was rearrange the equation, which you can only do if you are already following a specific convention.

    No it can’t because no it wouldn’t 😂

    All conventions can produce the correct answer, when appropriately arranged for that convention, because the conventions are not laws of mathematics, they are conventions.

    Nope! The obey all the rules of Maths. They would get wrong answers if they didn’t

    They obey the laws of math. Conventions aren’t laws of math, they’re conventions. And a quick Google search will tell you that not everyone puts juxtaposition at a higher precedent than multiplication; it’s a convention. As long as people are using the same convention, they’ll agree on an answer and that answer is correct.

    You can be mean all you like, that doesn’t change the nature of conventions

    • Ok, then explain prefix and postfix, where these conventions don’t apply

      The conventions don’t apply, the rules still apply. Maths notation and the rules of Maths aren’t the same thing.

      How can these be rules of math when they didn’t universally apply?

      The rules do universally apply 🙄

      The order of operations tells us how to interpret an equation without rearranging it

      Yep, and you showed you don’t know the rules 🙄

      When you pick a different convention, you need to rearrange it to get the same answer

      Not necessarily, though it makes it easier (but also leads a lot of people to make mistakes with signs, as you found out 😂 )

      What you did was rearrange the equation

      To show you how to correctly do “Multiplication first”. 🙄

      which you can only do if you are already following a specific convention

      Which you didn’t, hence why you ended up with a wrong answer. 🙄 There is no textbook which says put the multiplication in Brackets if doing “Multiplication first”, none.

      because the conventions are not laws of mathematics, they are conventions

      And putting the Multiplication inside Brackets isn’t a convention anywhere 🙄

      They obey the laws of math. Conventions aren’t laws of math, they’re conventions

      Yep, and you ignored both, hence your wrong answer 🙄

      And a quick Google search will tell you that not everyone puts juxtaposition at a higher precedent than multiplication

      And a quick look in the Google support forum will show you many people telling them that is wrong, and Google just closes the incident 🙄

      it’s a convention

      No it isn’t. It’s against the rules. 🙄 Again, you won’t find this alleged “convention” in any Maths textbook

      As long as people are using the same convention, they’ll agree on an answer and that answer is correct

      Unless they disobeyed the rules, in which case they are all wrong 🙄

      You can be mean all you like, that doesn’t change the nature of conventions

      And you can be as ignorant of the rules and conventions of Maths as much as you want, and it’s not going to change that your answer is wrong 🙄

      • PeriodicallyPedantic@lemmy.ca
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        4 days ago

        Yeah, you clearly don’t even know what a convention is, and what are math conventions and math “rules” as you put it.

        You’re wrong, and even a 2 minute Google search would show you that and explain why. I’m done being Google for you when you’re not willing to Google it yourself.

        • Yeah, you clearly don’t even know what a convention is, and what are math conventions and math “rules” as you put it

          Says person who actually doesn’t know the difference, as per Maths textbooks

          You’re wrong

          oh no! you better start contacting all the textbook publishers and tell them that all Maths textbooks are wrong 😂

          even a 2 minute Google search would show you that and explain why

          Even a 2 minute Google search will bring up Maths textbooks which prove that Google is wrong 🙄

          I’m done being Google for you

          Maths teachers don’t use Google - that’s what Maths textbooks are for

          when you’re not willing to Google it yourself

          says person who was unwilling to use Google to find Maths textbooks 🙄

          • PeriodicallyPedantic@lemmy.ca
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            2 days ago

            Wikipedia

            In mathematics and computer programming, the order of operations is a collection of conventions about which arithmetic operations to perform first in order to evaluate a given mathematical expression

            What’s that? You don’t trust Wikipedia?
            Ok, you’ve yet to explain why notations like prefix and postfix dont need these “rules”.
            If they were rules of mathematics **itself** how could they only apply to certain notations?

            • Wikipedia

              isn’t a Maths textbook 🙄 far out, did you learn English from Wikipedia too? You sure seem to have trouble understanding the words Maths textbook

              You don’t trust Wikipedia?

              The site that you just quoted which is proven wrong by Maths textbooks, THAT Wikipedia?? 🤣🤣🤣

              you’ve yet to explain why notations like prefix and postfix dont need these “rules”.

              Umm, they do need the rules! 😂

              how could they only apply to certain notations?

              They don’t, they apply to all notations 🙄

              • PeriodicallyPedantic@lemmy.ca
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                21 hours ago

                They don’t, they apply to all notations

                I love how confident you are about something you clearly have no knowledge of.
                Adorable.

                Well, you made a good effort. At least if we’re judging by word count.

                  • PeriodicallyPedantic@lemmy.ca
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                    8 hours ago

                    To a “maths teacher”

                    Yeah sure
                    A “teacher” who doesn’t know that all lessons are simplifications that get corrected at a higher level, and confidentiality refers to children’s textbook as an infallible source of college level information.

                    A “teacher” incapable of differentiating between rules of a convention and the laws of mathematics.

                    A “teacher” incapable of looking up information on notations of their own specialization, and synthesizing it into coherent response.

                    Uh huh, sounds totally legit