Alaknar

joined 5 months ago
[–] Alaknar@sopuli.xyz 1 points 3 days ago (25 children)

No it isn’t 😂

Yes it is.

The part where you said to leave it out of the mnemonic “It should be limited - like Orders - to only Multiplication and Addition”

If you understand what is multiplication and what is addition, then you know what this doesn't suggest ignoring division or subtraction at all.

Nope. 2/2 is not the same as 2*½. Do you need glasses or something??

OK, teach me. What's the result of 2/2 and what's the result of 2*½?

Because 2-2 came first, before we started using Brackets in Maths, by several hundred years

Explain how is that relevant to the discussion. Or to the example I gave, where brackets are only used for readability sake, they're not changing the results in any way. You might as well note that as -2+2 - see? No scary brackets anymore, same result.

You glibly ignoring the history and rules of Maths 🙄

Well... yes, because we're not talking about the history, we're talking about the current rules.

That’s EXACTLY what the mnemonics are for! 😂 Don’t need to understand it, just follow the steps

This whole thread stemmed from the fact that some people were taught PEMDAS while others where taught PEDMAS.

Are you suggesting that the order of operations depends on your maths teacher?

No-one gets confused or angry about that

Wow, let me be the first to welcome you to the Internet! I know it might be jarring at first, but give it time and you'll get used to the weirdness! Glad to see you joining!

There are textbooks that specifically teach to do it that way

Great! Now find one that actually talks about that, instead of one that talks about the addition of similar monomials, which is a different thing altogether.

Actually, you know what? Never mind - instead just read the part you posted, but slower. Here, let me highlight the important bit:

"Addition of similar monomials is performed by taking the arithmetical difference between the total of the positive and the total of the negative coefficients, giving it the sign of the numerically greater total, and annexing it to the common literal part"

Which actually reinforces my point.

I have never seen any textbook say to do Subtraction before Addition, everyone is taught Addition first

See? This is exactly what I was talking about. Addition is NOT first, unless it's the first on the right. If subtraction is first, you do subtraction first.

Understanding that you can do them in any order proves there is no problem 😂

Again, let me extend a warm welcome on behalf of everyone on the Internet. I believe you'll have a great time here.

[–] Alaknar@sopuli.xyz 1 points 3 days ago (27 children)

No it isn’t.

Yes, it is.

And you still have to do both

Quote the part where I said you didn't.

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

They are the same.

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

  1. How is that "having it the wrong way around"?
  2. What does that have to do with the topic at hand? We're talking about maths today, not centuries ago.

And you were wrong every time you said it.

No, they're not.

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

Mnemonic without understanding what you're doing doesn't help. Which is why people get confused and argue online that you must do addition before subtraction, or the other way around, depending on what the mnemonic they learned was.

Understanding that subtraction is just the addition of a negative number solves this problem.

[–] Alaknar@sopuli.xyz 0 points 3 days ago (1 children)

What do you mean? I replied to it...

[–] Alaknar@sopuli.xyz 0 points 4 days ago (3 children)

You already said that to me. I replied here.

[–] Alaknar@sopuli.xyz 2 points 4 days ago (29 children)

Because you don’t want people to know when to do Division and Subtraction? 😂

Because division is multiplication, and subtraction is addition.

No it isn’t, but they are both binary operators.

2/2 is the same as 2*½

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

And where are they going to do Division and Subtraction in the left to right if you’ve left them out? 🙄

Well, as I already said multiple times: Division = Multiplication and Subtraction = Addition, therefore they would be doing them together, left to right. As in: 9-3+2 would not confuse anyone who learned "Addition → Subtraction", as it does right now.

[–] Alaknar@sopuli.xyz 4 points 5 days ago

“hard work let former line workers like Elon Musk become CEOs”.

Hard work, waking up early, no avocado toast or macha lattes, a small loan of $200 million from daddy the emerald mine owner, a "can do" attitude, and anyone can be a world-renowned CEO!

[–] Alaknar@sopuli.xyz 4 points 5 days ago

He kinda already did - he was complaining that he can't "get everything done like the president of China", and instead having to wait for other people's approval (like, you know, the Congress).

[–] Alaknar@sopuli.xyz 0 points 1 week ago (1 children)

What else do you call it when a multi-trillion dollar corporate enterprise sells surveillance data to every racist sheriff’s office and royal secret police and aspiring military dictator from South Dakota to Siam?

Capitalism.

WTF do western governments got to do with what private companies are doing?

[–] Alaknar@sopuli.xyz -1 points 2 weeks ago (2 children)

Write more non-Nazi stuff and it will stop being a Nazi platform.

[–] Alaknar@sopuli.xyz 0 points 3 weeks ago (1 children)

I mean, there are very few ambiguous cases when you know how the order of operations works.

[–] Alaknar@sopuli.xyz 1 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Because the people who learn "DM" or "MD" then spend hours online arguing that you must do one before the other.

view more: ‹ prev next ›