Your Universal Remote Control Center
RemoteCentral.com
Intermission Forum - View Post
Previous section Next section Previous page Next page Up level
Up level
The following page was printed from RemoteCentral.com:

Login:
Pass:
 
 

Page 2 of 2
Topic:
Do you ever lose hope in humanity?
This thread has 27 replies. Displaying posts 16 through 28.
OP | Post 16 made on Wednesday April 20, 2011 at 20:30
Anthony
Ultimate Member
Joined:
Posts:
May 2001
28,543
On April 20, 2011 at 00:08, Daniel Tonks said...
I'm assuming this is the original thread you were referencing: [Link: physicsforums.com] - some interesting discussion on ths issue.

(And yes, the first time I did it myself I came up with 288.)

no, a different forum that has nothing to do with either math or physics
...
Post 17 made on Thursday April 21, 2011 at 10:05
djy
RC Moderator
Joined:
Posts:
August 2001
33,903
Ah! I think we get to the nub of the argument.

[Link: knowyourmeme.com]

I see this 48/2(9+3) as this...




The alternatives (which I believe to incorrect) see it as this...




If one is using a single line, and it's the latter that's intended, the denominator should be clearly defined...

Last edited by djy on April 21, 2011 11:35.
Post 18 made on Sunday April 24, 2011 at 12:07
highfigh
Loyal Member
Joined:
Posts:
September 2004
7,808
On April 16, 2011 at 13:19, Anthony said...
I think it is just the UK equivalent of PEMDAS
I am guessing B=brackets since I know that is what they call parenthesis.

Then, what do they call [ ] or { }?
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."
Post 19 made on Sunday April 24, 2011 at 12:09
highfigh
Loyal Member
Joined:
Posts:
September 2004
7,808
On April 18, 2011 at 21:44, Anthony said...
actually there is something wrong with it, the correct answer is 288

What's wrong with it? Explain what, don't just say it's wrong. The operation in parentheses has to be performed first because anything under the / is the same as using a horizontal dividing line and you can't just grab part of the equation and work it out randomly.
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."
Post 20 made on Sunday April 24, 2011 at 12:13
highfigh
Loyal Member
Joined:
Posts:
September 2004
7,808
On April 13, 2011 at 23:01, Anthony said...
On an other thread in an other forum, someone started a poll

what is the answer to
48/2(9+3)

and there are two answers
a) 2
b) 288

roughly half the people voted 2 and even scarier some people are arguing that there is nothing wrong with picking 2 as the answer.

If the 48/2 was supposed to be a separate operation, it would have been expressed as (48/2)(9+3)=x
My mechanic told me, "I couldn't repair your brakes, so I made your horn louder."
Post 21 made on Sunday April 24, 2011 at 12:34
djy
RC Moderator
Joined:
Posts:
August 2001
33,903
On April 24, 2011 at 12:07, highfigh said...
Then, what do they call [ ] or { }?

[Link: en.wikipedia.org]


On April 24, 2011 at 12:09, highfigh said...
What's wrong with it? Explain what, don't just say it's wrong.

I thought I had.


On April 24, 2011 at 12:13, highfigh said...
If the 48/2 was supposed to be a separate operation, it would have been expressed as (48/2)(9+3)=x

As would (2(9+3)) or, more correctly, [2(9+3)] if it is to be considered the denominator. To quote from here...

Similarly, care must be exercised when using the slash ('/') symbol. The string of characters "1/2x" is interpreted by the above conventions as (1/2)x. The contrary interpretation should be written explicitly as 1/(2x). Again, the use of brackets will clarify the meaning and should be used if there is any chance of misinterpretation.

Last edited by djy on April 24, 2011 14:41.
OP | Post 22 made on Monday April 25, 2011 at 11:35
Anthony
Ultimate Member
Joined:
Posts:
May 2001
28,543
On April 24, 2011 at 12:09, highfigh said...
What's wrong with it? Explain what, don't just say it's wrong. The operation in parentheses has to be performed first because anything under the / is the same as using a horizontal dividing line and you can't just grab part of the equation and work it out randomly.

the operation in paranthesis is done first, thart is 9+3=12.

48/2(9+3) means 48/2(12) we did the parenthesis, now we move on
if 48/2(12) mixes you up because you see ( to represent multiplication, then replace it with *, in the end it is the same operation, both (and x) represent multiplication.
so if I asked 48/2*12 would you still say it is 2? you should do the operations (since they are all multiplication/division and so on the same level ) in the order they appear. So 48/2=12 since / pops up first and then 24*12=288

it would have been expressed as (48/2)(9+3)=

even though mathematically, that representation would be equally correct to the original, no mathematician would ever use it. The parenthesis in (48/2) is redundant and useless and Mathematicians are lazy by nature, that is why they would also not write it as 48/2*(9+3) why add an extra symbol when it implies multiplication without it.
...
Post 23 made on Tuesday May 3, 2011 at 10:49
djy
RC Moderator
Joined:
Posts:
August 2001
33,903
Do you think we finally convinced him?
Post 24 made on Monday March 11, 2019 at 08:41
markuszusack
Junior Member
Joined:
Posts:
March 2019
1
Well, I think you should know BODMAS

In BODMAS,we actually have

B
O
D M
A S

i.e. Divsion and Multiplication have the same order

So, we first open the bracket.

And then go from left to right.

The correct answer is 288
Markus
Post 25 made on Monday March 11, 2019 at 16:55
Mac Burks (39)
Elite Member
Joined:
Posts:
May 2007
17,450
After almost 8 years of living real life since this post hit the web... i can safely say that i don't need to understand what you folks are talking about.
Avid Stamp Collector - I really love 39 Cent Stamps
Post 26 made on Monday May 27, 2019 at 18:45
davidcasemore
Super Member
Joined:
Posts:
January 2003
3,236
On March 11, 2019 at 16:55, Mac Burks (39) said...
After almost 8 years of living real life since this post hit the web... i can safely say that i don't need to understand what you folks are talking about.

Well, it's the same formula Trump uses to calculate his tax returns knowing that the IRS won't know any better.
Fins: Still Slamming' His Trunk on pilgrim's Small Weenie - One Trunk at a Time!
Post 27 made on Wednesday June 5, 2019 at 05:39
Strigiform
Junior Member
Joined:
Posts:
May 2019
2
"It's the same thing that was discussed during the campaign trail, the president is under audit. It's a routine one that continues," he said in a video I saw on FB2Mate. How do you guys think about it??
Post 28 made on Saturday March 21, 2020 at 16:14
Hi-FiGuy
Super Member
Joined:
Posts:
January 2004
2,727
everyday
Do they speak English on What?
Page 2 of 2


Jump to


Protected Feature Before you can reply to a message...
You must first register for a Remote Central user account - it's fast and free! Or, if you already have an account, please login now.

Please read the following: Unsolicited commercial advertisements are absolutely not permitted on this forum. Other private buy & sell messages should be posted to our Marketplace. For information on how to advertise your service or product click here. Remote Central reserves the right to remove or modify any post that is deemed inappropriate.

Hosting Services by ipHouse