• That’s not true

    Yes it is

    PEDMAS: 8÷2x4 = 4x4 = 16

    Yep.

    PEMDAS: 8÷2x4 = 8÷8 = 1

    Nope. PEMDAS: 8x4÷2 = 32÷2 = 16. What you actually did is 8÷(2x4), in which you changed the sign in front of the 4 - 8÷(2x4)= 8÷2÷4 - hence your wrong answer

    PE M|D A|S: 8÷2x4 = 4x4 = 16

    Yep, same answer regardless of the order 🙄

    And thats not even getting into juxtaposition operations,

    Which I have no doubt you don’t understand how to do those either, given you don’t know how to even do Multiplication first in this example.

    where fields like physics use conventions that differ from most other field

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

    you’re missing the point

    No, you are…

    It could be SAMDEP and math would still work

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

    you’d just rearrange the equation.

    Says someone who didn’t rearrange “PEMDAS: 8÷2x4 = 8÷8 = 1” and got the wrong answer 😂

    The rules don’t change

    Hence why “PEMDAS: 8÷2x4 = 8÷8 = 1” was wrong. You violated the rule of Left Associativity

    • PeriodicallyPedantic@lemmy.ca
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      11 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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          1 day 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.