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On April 09 2011 00:05 Vorenius wrote:
But all that aside, it seems many people got it wrong for complete all reasons. There seems to be a trend of NAs assuming division takes priority over multiplication. I'll assume it has to with that PEDMAS thing. Where I'm from we were just taught the order of operations without any silly mnemonic and that worked out just fine. Especially since PEDMAS is kinda flawed since it's P>E>(DM)>(AS) and not P>E>D>M>A>S
Wierd thing is for me, is that during elementary school (grades 4-8) I was tought that it was B>E>D>M>A/S (notice how they still grouped A/S together, just not D/M). Now in Highschool however i am being taught D/M are on the same tier
The answer of this question can completely depend on who taught you how do to Bedmas (Its brackets, not parenthesis)
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The Problem with this is, Not Anywhere is the sign "/" used in Real Life
thats a sign only for the Internet cause you cant use fraction strokes there ..
in Real Life you never have to make the decision if you first divide or multiply ..
and especially not at university
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I don't see how some people can get his wrong. In Belgium, you see these in early high school. Don't know in what grade US people see it, or other countries for that matter. Please enlighten me.
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this is not mathematics, this is merely a notation problem.
please go back to school, and feel free to "feel smart" there.
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On April 09 2011 00:11 phil.ipp wrote:
The Problem with this is, Not Anywhere is the sign "/" used in Real Life
This is false, you use that sign when you fraction two fractions for readability.
(1/2)
------ vs
(4/6)
1
---
2
--------------
4
---
6
for example.
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On April 09 2011 00:13 EffectS wrote:
I don't see how some people can get his wrong. In Belgium, you see these in early high school. Don't know in what grade US people see it, or other countries for that matter. Please enlighten me.
We get it in early highschool or grade 8 for my self...
The thing is that with PEDMAS the DM (division and multiplication) tier are done at the same time...
So some people are doing the multiplication then division
Where others are doing divison then multiplication
It just depends on if you see it as
48
2(9+3)
or
48 *(9+3)
2
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On April 09 2011 00:15 Wonderballs wrote:Show nested quote +On April 09 2011 00:11 phil.ipp wrote:
The Problem with this is, Not Anywhere is the sign "/" used in Real Life
This is false, you use that sign when you fraction two fractions for readability. (1/2) ------ vs (4/6) 1 --- 2 -------------- 4 --- 6 for example.
at your school maybe, i studied 1 year mathematics, 14 years normals school and this "/" was never used anywhere ..
oh i forgot we used this ":" in elementary school ..
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you can all laugh at people that they didnt remember the some rule (BEDMAS or what its called) .. but thats about it ..
now some people here think they are so smart haha :D
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On April 09 2011 00:16 Insanious wrote:Show nested quote +On April 09 2011 00:13 EffectS wrote:
I don't see how some people can get his wrong. In Belgium, you see these in early high school. Don't know in what grade US people see it, or other countries for that matter. Please enlighten me. We get it in early highschool or grade 8 for my self... The thing is that with PEDMAS the DM (division and multiplication) tier are done at the same time... So some people are doing the multiplication then division Where others are doing divison then multiplication It just depends on if you see it as 482(9+3) or 48 *(9+3) 2
No that's not it, the problem is not that people think division or multiplication comes first, the problem is whether juxtaposition takes precedence over normal division and multiplication.
Simple math: it doesn't.
Algebra: it does.
EDIT: why is this thread so long?
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bc so many people get offended when one questions their intelligence, especially in geeky communities like that of a pc game... 
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![[image loading]](http://i54.tinypic.com/25ji8wi.png)
perl wins
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I would read 48/2x as 48/(2x) because when you include algebra and not just pure numbers the outer parenthesis around the of 2x is silently there.
48/2x =>
x=(9+3)
(48/(2x))
(48/(2(9+3)))
edit:
On April 09 2011 00:22 buhhy wrote:
Simple math: it doesn't.
Algebra: it does.
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I couldn't even compile the equation:
![[image loading]](http://imgur.com/Bl7Sz.png)
So I had to slightly modify it and it spits out the answer 288:
![[image loading]](http://imgur.com/SJhv4.png)
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On April 09 2011 00:20 phil.ipp wrote:Show nested quote +On April 09 2011 00:15 Wonderballs wrote:On April 09 2011 00:11 phil.ipp wrote:
The Problem with this is, Not Anywhere is the sign "/" used in Real Life
This is false, you use that sign when you fraction two fractions for readability. (1/2) ------ vs (4/6) 1 --- 2 -------------- 4 --- 6 for example. at your school maybe, i studied 1 year mathematics, 14 years normals school and this "/" was never used anywhere .. oh i forgot we used this ":" in elementary school ..
How do I rebuttal that? "Well we don't do it; therefore it's asinine"
Well... my school isn't the only school that likes things to look nice.... you can be a disorganized slob if you want... but realize that you're not the center of the universe.
(btw my 4 years engineering + "normal school" undergrad trumps your 1 year math.)
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It gets a lot easier if you think of multiplication and division being the same operation (or division being the inverse of multiplication).
1 ÷ 4
is equivalent to
1 x 1/4
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On April 09 2011 00:27 hiddink wrote:perl wins
Um... you changed the notation, you added in the multiplication symbol into the equation because
48/2*(9+3)
is very different than
48÷2(9+3)
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On April 09 2011 00:27 hiddink wrote:perl wins
You aren't using implied multiplication. I think the discussion would be much different if the original post contained the expression as you wrote it. Lol.
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On April 09 2011 00:29 Insanious wrote:Um... you changed the notation, you added in the multiplication symbol into the equation because 48/2*(9+3) is very different than 48÷2(9+3)
Actually no, those two statements are equivalent. An implied multiplication operation has no higher or lower priority than an explicit one.
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On April 09 2011 00:27 hiddink wrote:perl wins
as with many other inconsistencies with the problem, the computer has no idea how to interpret the parenthesis if there is no operator between it and the previous term. It's a matter of programming logic than actual algebra.
MATLAB OUTPUT
>> 48/2(9+3)
??? 48/2(9+3)
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Error: Unbalanced or unexpected parenthesis or bracket.
On April 09 2011 00:31 trainRiderJ wrote:Show nested quote +On April 09 2011 00:29 Insanious wrote:On April 09 2011 00:27 hiddink wrote:perl wins Um... you changed the notation, you added in the multiplication symbol into the equation because 48/2*(9+3) is very different than 48÷2(9+3) Actually no, those two statements are equivalent. An implied multiplication operation has no higher or lower priority than an explicit one.
They are equivalent yes. However consider
48
---- * (9+3)
2
is this statement equivalent to the original?
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On April 09 2011 00:31 trainRiderJ wrote:Show nested quote +On April 09 2011 00:29 Insanious wrote:On April 09 2011 00:27 hiddink wrote:perl wins Um... you changed the notation, you added in the multiplication symbol into the equation because 48/2*(9+3) is very different than 48÷2(9+3) Actually no, those two statements are equivalent. An implied multiplication operation has no higher or lower priority than an explicit one.
Indeed, they both equal 288.
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EPT
