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Whats your such opinion (discuss.tchncs.de)
submitted 11 months ago by cryptix@discuss.tchncs.de to c/asklemmy@lemmy.ml
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[-] Vagabond@kbin.social 8 points 11 months ago

I see what you're getting at but the issue isn't really the assumed multiplication symbol and it's priority. It's the fact that when there is implicit multiplication present in an algebraic expression, and really best practice for any math above algebra, you should never use the '÷' symbol. You need to represent the division as a numerator and denominator which gets rid of any ambiguity since the problem will explicitly show whether (2+2) is modifying the numerator or denominator. Honestly after 7th grade I can't say I ever saw a '÷' being used and I guess this is why.

That said, I'll die on a hill that this is 16.

[-] MotoAsh@lemmy.world 2 points 11 months ago* (last edited 11 months ago)

There is another example where the pemdas is even better covered than a simple parenthetical multiplication, but the answer there is the same: It's the arbitrary syntax, not the math rules.

You guys are both correct. It's 16 and the problem is a syntax that implies a wrong order of operations. The syntax isn't wrong, either, just implicative in your example and seemingly arbitrary in the other example I wish I remembered.

[-] SmartmanApps@programming.dev -1 points 8 months ago

not the math rules

If it involves Maths, then it's Maths rules.

It’s 16

It's 1

[-] MotoAsh@lemmy.world 1 points 8 months ago

Do you not understand that syntax is its own set of rules?

[-] SmartmanApps@programming.dev -1 points 8 months ago

Do you not understand that syntax is its own set of rules?

Yes, the rules of Maths, as I was already saying. I'm a Maths teacher. I take it you didn't read the link then.

[-] taladar@sh.itjust.works 1 points 11 months ago

the assumed multiplication symbol and it’s priority.

Precedence is the term usually used for this (at least anywhere where computers have to parse expressions)

[-] SmartmanApps@programming.dev 0 points 8 months ago

I’ll die on a hill that this is 16

Rest in peace

this post was submitted on 07 Dec 2023
539 points (87.7% liked)

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