48/2(9+3) = ???
- Thread starter Morgan C
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JeffTD
Senhor Testiculo
Apparently in Poland they don't teach "quantity of" equations, then.
*edit* In all seriousness, I'd say that assuming that 2(9+3) = 2*(9+3) is as ridiculous as assuming it was meant to be written as (2(9+3)).
*edit* In all seriousness, I'd say that assuming that 2(9+3) = 2*(9+3) is as ridiculous as assuming it was meant to be written as (2(9+3)).
midget donkeys
Member
- Jan 11, 2007
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This thread is awesome. My wife teaches math at a community college I am going to show this thread to her tonight so she can have some laughs.
This conversation might take the cake for being the most heated pointless argument on sneap forum yet.
Please resume throwing poop at one another.
This conversation might take the cake for being the most heated pointless argument on sneap forum yet.
Please resume throwing poop at one another.
Clockwork
Bass playing guy.
PEMDAS tells me the answer is 2. But my desire to be a non-conformist tells me the answer is 288.
Audiosprite
ok
http://www.wolframalpha.com/input/?i=48/2(9+3)
wolfram says 288, i'll go with that
and that's why i always use excessive limiters when typing.
wolfram says 288, i'll go with that
and that's why i always use excessive limiters when typing.
LeSedna
Mat or Mateo
I think you should deal with it since I've never been taught "quantity of" neither. I don't even know what it means ?
For me, 2(9+3), putting aside any notion of informatics/TI calculator etc, only pure maths, exactly means the same as 2*(9+3), and I have never hear the word "quantity" so there is cultural explanations in the problem as well.
Also, in China, there are parts where they don't write calculus the same way we do. I had a chinese guy who had to learn again a few basic stuff to get used to our western way of writing stuff on a blackboard.
EDIT : and that's why the way I have been taught how to write maths links me to 288
My TI-84 Plus says it's 288 so I'm going to go with that. Which I don't find that odd.
48/2(9+3)=48/2(12)=48/2*12=24*12=288
This what I've been taught.
Matlab 7 doesn't dare giving an answer, it says it's undefined. Wonder why...
Maple 14 says it's 2. Although it doesn't allow writing it in that machinetext-y form. So I wouldn't call that THE answer. Edit: Managed to type 48/2(9+3) with a workaround: answer was 288
I've never heard of that "quantity of...". Very curious where that info can be found. Khanacademy doesn't even mention this, and they're americans: http://www.khanacademy.org/video/order-of-operations?playlist=Developmental Math
48/2(9+3)=48/2(12)=48/2*12=24*12=288
This what I've been taught.
Matlab 7 doesn't dare giving an answer, it says it's undefined. Wonder why...
Maple 14 says it's 2. Although it doesn't allow writing it in that machinetext-y form. So I wouldn't call that THE answer. Edit: Managed to type 48/2(9+3) with a workaround: answer was 288
I've never heard of that "quantity of...". Very curious where that info can be found. Khanacademy doesn't even mention this, and they're americans: http://www.khanacademy.org/video/order-of-operations?playlist=Developmental Math
JeffTD
Senhor Testiculo
The quantity of part is basically distributive property...
7(x+1) is said, aloud in English, as "7 quantity x plus one." What it means is that there are seven instances (quantities) of the equation x+1. It's the same as
(x+1+x+1x+1+x+1x+1+x+1+X+1), or (7x+7). Because 7(x+1) is it's own term, it's solved first, whereas if it were written 7*(x+1), that would be a binomial.
Again, it sounds retarded saying the two are different because mathematically they are the same when isolated outside of an equation, but it changes how the rest of an equation will react to it.
7(x+1) is said, aloud in English, as "7 quantity x plus one." What it means is that there are seven instances (quantities) of the equation x+1. It's the same as
(x+1+x+1x+1+x+1x+1+x+1+X+1), or (7x+7). Because 7(x+1) is it's own term, it's solved first, whereas if it were written 7*(x+1), that would be a binomial.
Again, it sounds retarded saying the two are different because mathematically they are the same when isolated outside of an equation, but it changes how the rest of an equation will react to it.
C_F_H_13
Protools Guru
gabriel g.
Member
Its not written clear.
Normaly you would write 288=48/2 X (9+3)=24x(9+3)=216+72=288=24x12
and you would write 2=48/2(9+3)=48/(2(9+3))=48/18+6=48/24=2
but this is all piss easy math dudes come on.
I had to do math 1 and math 2 for mediatechnics which includes everything you would ever need for AD/AD and wav-forms....thats tuff!!!
Normaly you would write 288=48/2 X (9+3)=24x(9+3)=216+72=288=24x12
and you would write 2=48/2(9+3)=48/(2(9+3))=48/18+6=48/24=2
but this is all piss easy math dudes come on.
I had to do math 1 and math 2 for mediatechnics which includes everything you would ever need for AD/AD and wav-forms....thats tuff!!!
SocialNumb
Damn Christians!
48/2(9+3)=288 in:
ti-83
ti-84 plus
ti-86
Maple 14
Wolframalpha http://www.wolframalpha.com/input/?i=48/2(9+3)
Google http://www.google.se/#hl=sv&xhr=t&q...=&aql=&oq=48/2(9+3)&pbx=1&fp=1590cde2b32b90c0
ti-83
ti-84 plus
ti-86
Maple 14
Wolframalpha http://www.wolframalpha.com/input/?i=48/2(9+3)
Google http://www.google.se/#hl=sv&xhr=t&q...=&aql=&oq=48/2(9+3)&pbx=1&fp=1590cde2b32b90c0
whilst i appreciate that this has troll all over it, i'll give it a go..
the real issue here is which has higher precedent, division or multiplication?
i.e, does a/b*c = (a/b)*c or a/(b*c) ?
there are rules for both, PEMDAS and BEDMAS are the two i've heard of. however, the former yields 2 as the answer, where as the latter gives 288.
when i wrote a compiler, which must evaluate expressions exactly like this, we were told division binds stronger than multiplication. furthermore, wikipedia seems to agree with me, that division binds stronger, so i'm more inclined to believe that the answer is in fact 288.
i guess it depends who you want to believe really..!
thanks,
p.s i'm a 3rd year maths and computer science student.
edit: further reading suggests that you should perform left to right evaluation in ambiguous situations like this, as multiplication and division have equal precedence. (this again gives 288..)
the real issue here is which has higher precedent, division or multiplication?
i.e, does a/b*c = (a/b)*c or a/(b*c) ?
there are rules for both, PEMDAS and BEDMAS are the two i've heard of. however, the former yields 2 as the answer, where as the latter gives 288.
when i wrote a compiler, which must evaluate expressions exactly like this, we were told division binds stronger than multiplication. furthermore, wikipedia seems to agree with me, that division binds stronger, so i'm more inclined to believe that the answer is in fact 288.
i guess it depends who you want to believe really..!
thanks,
p.s i'm a 3rd year maths and computer science student.
edit: further reading suggests that you should perform left to right evaluation in ambiguous situations like this, as multiplication and division have equal precedence. (this again gives 288..)
The-Zeronaut
Mixing..Y U SO DIFFICULT?
- Sep 24, 2007
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FloridaRolf
W.A.T.
Sickan
¯\(°_o)/¯
Sickan
¯\(°_o)/¯
I love how both sides use PEMDAS as an argument for why their answer is correct.
Division and multiplication hold the same importance, and you go left to right. It could just as well be PEDMSA.
And this 'quantity of' stuff is pure bullshit.. Sure you might say the two differently, but it doesn't make a difference to them mathematically. Again, I understand what you're saying, but it's wrong and I want a source other than you.
Division and multiplication hold the same importance, and you go left to right. It could just as well be PEDMSA.
And this 'quantity of' stuff is pure bullshit.. Sure you might say the two differently, but it doesn't make a difference to them mathematically. Again, I understand what you're saying, but it's wrong and I want a source other than you.
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