Another basic maths for you :)

ghostwolf82

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1

Thursday, May 9th 2013, 5:10pm

6/2(1+2)

Solve.

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Djed

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2

Thursday, May 9th 2013, 5:14pm

The answer is a gold medal!

More math fun!
https://www.youtube.com/watch?v=obIGsb-IZMo

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RoMage

rustyx is lame rogue

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3

Thursday, May 9th 2013, 5:16pm

9

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Borella

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4

Thursday, May 9th 2013, 5:29pm

One plus two equals three

Six divided by two equals three

Three times three equals

9

Borella - 100 W/M/S/R/P/K

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ghostwolf82

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5

Thursday, May 9th 2013, 5:58pm

Quoted from "Djed;600508"

The answer is a gold medal!

More math fun!
https://www.youtube.com/watch?v=obIGsb-IZMo

I haven't seen anything from him in a long time, thanks for the laugh!

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Auros

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6

Thursday, May 9th 2013, 6:51pm

Parens has highest precedence so all operations inside parens are conducted first. Multiplication has equal precedence with division, though this is still controversial in the form presented. The American Physical Journal states that division with a slash (/) has lower precedence than multiplication. You would think that this would have been standardized by now. Also, it used to be that implied multiplication had higher precedence than explicit multiplication, but I understand that his has been cleared up to make them equal...

6/2(1+2)
6/2(3)
6/6
1, per the American Physical Journal, and implied multiplication.

6/2(1+2)
6/2(3)
6/2 X 3
3 X 3
9, per most basic math texts, and modern interpretation of precedence.

Govinda P/W/K/M 100x4 :pump:

Wl/R/M/Ch 100x4 :borg:

Wd/W/S 100/100/100
W/M 100/100 Glass Cannon: oh gawd, not again :pinch:

... and numerous others Semi-retired :pillepalle:

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Kalvan

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7

Thursday, May 9th 2013, 8:04pm

Quoted from "Djed;600508"

The answer is a gold medal!

More math fun!
https://www.youtube.com/watch?v=obIGsb-IZMo

Here's an even better one, and is representative of the failures of my math education back when I was a wee sprat:

https://www.youtube.com/watch?feature=pl…e&v=DfCJgC2zezw

[ New Sig Coming. Watch This Space! ]

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RoMage

rustyx is lame rogue

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8

Thursday, May 9th 2013, 9:00pm

When you talk about math and fun, Arthur Benjamin comes into mind... here is his Ted Talk - Mathemagician.

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Quaffy2

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9

Thursday, May 9th 2013, 10:07pm

Quoted from "ghostwolf82;600506"

6/2(1+2)

Solve.

Honestly, I wouldn't write anything in that fashion as through simple text that can look ambiguous and get misinterpreted, especially when just using a /. Normally you would see the fraction with one number at least slightly above the other and know where the person wanted the parenthesis.

Id write it as 6/[2(1+2)] or 6/2 x (1+2) or use something that doesnt show the fraction as one line.

If I had to, for this example, I'd say the intent was to make that 3*3=9

Take for example if it was displayed as 6÷2(1+2), technically writtent the same way, but I would interpret that as 6/6 instead. As in 6 divided by (all the stuff over there on the right), where on paper ud put the 6 on top and the other stuff on bottom.

Either way, I'm going with the problem is ambiguously written if you want to actually communicate something

Quaffy - 87 Mage/ 85 Priest/ 70 Scout (formerly one of the much hated P/S in PvP

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ghostwolf82

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10

Thursday, May 9th 2013, 10:25pm

There is no ambiguity in it at all. The ambiguity is in how you may have been taught math. The difference here is no mathematician uses the obelus(÷) past the third grade. Just the use of a different symbol does not change the order of operations, as you may have been taught, which is incorrect. That is like assuming implied multiplication has a higher value than normal multiplication or division, which it does not.

Also, there is no fraction in my equation. Again, this stems from you having never done higher math classes.

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Quaffy2

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11

Thursday, May 9th 2013, 11:14pm

Quoted from "ghostwolf82;600534"

There is no ambiguity in it at all. The ambiguity is in how you may have been taught math. The difference here is no mathematician uses the obelus(÷) past the third grade. Just the use of a different symbol does not change the order of operations, as you may have been taught, which is incorrect. That is like assuming implied multiplication has a higher value than normal multiplication or division, which it does not.

Also, there is no fraction in my equation. Again, this stems from you having never done higher math classes.

I basically said it can be written in a much clearer fashion, not that we should use (÷), nor did I say using a different symbol changes the order of operations (which were arbitrarily determined). I still said what the answer would be, and have done my fair share of higher level math, though not a math major, I have a Master's degree in engineering. Given the choice I wouldnt have it written as 6/2(1+2). That makes it much easier to be misinterpreted.

I'd venture to say no mathmetician would write something looking like 6/2(1+2) when it can be expressed better and more clear, we're kinda limited with the format of how things can be written on a keyboard in the forums.

It's the same reason why I wouldnt write abc/def, with each letter being a variable.

Quaffy - 87 Mage/ 85 Priest/ 70 Scout (formerly one of the much hated P/S in PvP

)
Heavensfury, Govinda
Killed^byBorella February 15, 2012

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Inferiority

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12

Thursday, May 9th 2013, 11:21pm

As a mathematician, I feel I must interject here.

Should 6/2(1+2) be meant to imply that it's really a long fraction with 6 as the numerator and 2(1+2) as the denominator, there would have been parentheses around it like this: 6/[2(1+2)]

However, these parentheses are not present so we really have (6/2) * (1+2) and this makes 9.

In fact, if you enter "6/2(1+2)" into a calculator, Google or Wolfram Alpha, they will all give the answer as 9 too.

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Auros

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13

Friday, May 10th 2013, 12:24am

Quoted from "ghostwolf82;600534"

There is no ambiguity in it at all. The ambiguity is in how you may have been taught math. The difference here is no mathematician uses the obelus(÷) past the third grade. Just the use of a different symbol does not change the order of operations, as you may have been taught, which is incorrect. That is like assuming implied multiplication has a higher value than normal multiplication or division, which it does not.

Also, there is no fraction in my equation. Again, this stems from you having never done higher math classes.

Of course there is ambiguity, that is why you presented it that way. Quaffy is correct in that the better way is to use parens/brackets to remove any ambiguity. You would not present it the way he wrote it as the answer is evident and does not serve your purpose.

And this is basic math, has nothing to do with "higher math classes".

Govinda P/W/K/M 100x4 :pump:

Wl/R/M/Ch 100x4 :borg:

Wd/W/S 100/100/100
W/M 100/100 Glass Cannon: oh gawd, not again :pinch:

... and numerous others Semi-retired :pillepalle:

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Djed

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14

Friday, May 10th 2013, 7:05am

Quoted from "Kalvan;600525"

Here's an even better one, and is representative of the failures of my math education back when I was a wee sprat:

https://www.youtube.com/watch?feature=pl…e&v=DfCJgC2zezw

I've always liked this song and others from him.

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ruisen2000

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15

Friday, May 10th 2013, 7:11am

Quoted from "Quaffy2;600538"

I I have a Master's degree in engineering.

Reminded me of the Video Yoman linked lol
http://www.youtube.com/watch?v=rp8hvyjZWHs

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vfwiffo

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16

Friday, May 10th 2013, 7:44am

Filk >> math. Solve that!

-- Rustyx --- 92R / 92S / 92M on Reni (Guild KnightShift). Yes, running the new FOTM R/M, cause I am not elf enough to be WD/S.

Oh, and people who have more than 3 classes are clinically insane.

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Ravesden

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Friday, May 10th 2013, 10:44am

72 1/2.

Ravesden, D/S/Wd 80/75/62
Retired. Click siggy for old RoM vids, among other things.

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ghostwolf82

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18

Friday, May 10th 2013, 11:57am

Quoted from "Inferiority;600539"

As a mathematician, I feel I must interject here.

Should 6/2(1+2) be meant to imply that it's really a long fraction with 6 as the numerator and 2(1+2) as the denominator, there would have been parentheses around it like this: 6/[2(1+2)]

However, these parentheses are not present so we really have (6/2) * (1+2) and this makes 9.

In fact, if you enter "6/2(1+2)" into a calculator, Google or Wolfram Alpha, they will all give the answer as 9 too.

Thank you sir. Also, I love me some wolfram alpha!

Quoted from "Auros;600541"

Of course there is ambiguity, that is why you presented it that way. Quaffy is correct in that the better way is to use parens/brackets to remove any ambiguity. You would not present it the way he wrote it as the answer is evident and does not serve your purpose.

And this is basic math, has nothing to do with "higher math classes".

Actually, the point of this is that there is no ambiguity, and people have just forgotten how to do simple PEMDAS. If I wanted there to be more brackets or parenthesis, I would have added them. As I said before, parenthesis are never, ever implied. They either are, or they are not.

Quoted from "Ravesden;600570"

72 1/2.

If you keep answering that, someday you just might be right lol

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aardvark3

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19

Friday, May 10th 2013, 12:49pm

Here is a problem for you
At the cost of a 100k TP orb on sale Thursday night for 125 diamonds.

Part 1: How many diamonds would it take to level up one skill from level 76 to level 77?

Part 2: Since there was no diamond sale at the time of the sale how much real world money would that cost?

Extra credit question: Calculate the cost in real world money the cost to upgrade to level 78 all your skills that you currently use disreguarting all skills that do not level or max out at level 50, assuming that you earn TP at the highest level available with your equipment and house bonuses.