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Old Nov 6, 2006 | 06:33 PM
  #31  
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Originally Posted by Jani
1/3 cannot be written as an exact decimal.... .33333repeating is an Approximation.

proofs lose validity when you approximate.

limit of .9999 = 1, but .9999 != 1
This should close the case.
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Old Nov 6, 2006 | 06:33 PM
  #32  
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:rofl:



Bwahaha.
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Old Nov 6, 2006 | 06:51 PM
  #33  
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Originally Posted by Jani
1/3 cannot be written as an exact decimal.... .33333repeating is an Approximation.

proofs lose validity when you approximate.

limit of .9999 = 1, but .9999 != 1
repeating decimals are not approximations in any way, they are exact

here is my mth491 book

numbers: rational and irrational
by: ivan niven

pay attention to problem set 8, number 1, part f

the last pic is the solutions in the back of the book

problem set 8, number 1, part f

from this i conclude that writing .999 repeating as a fraction is exactly 1
thus .999... = 1
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Old Nov 6, 2006 | 06:52 PM
  #34  
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Originally Posted by Red X
This should close the case.
No it won't because Asian's still stand by the fact that cow=dog :madr:
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Old Nov 6, 2006 | 07:09 PM
  #35  
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Originally Posted by cpvdh
repeating decimals are not approximations in any way, they are exact

here is my mth491 book

numbers: rational and irrational
by: ivan niven

pay attention to problem set 8, number 1, part f

the last pic is the solutions in the back of the book

problem set 8, number 1, part f

from this i conclude that writing .999 repeating as a fraction is exactly 1
thus .999... = 1
wheres the proof?








using calc, you can prove .999 = 1, but thinking outside that box... .999 != 1

its like saying 1 = 2 if you tilt your head and squint hard enough... or cow=dog h:
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Old Nov 6, 2006 | 07:21 PM
  #36  
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Originally Posted by Jani
wheres the proof?
it is one of the homework questions, it doesnt show the proof, just the solution

im not sure where you are jumping from if .999... = 1 then 1=2

.999... is an infinite decimal
.999...9 would mean there is an actual end to it, thus a terminating decimal, thus it would not be equal to 1

if you cant see that 1/3 = .333... repeating then there is some other assumption you are making that isnt valid, repeating decimals are just as valid a number as an integer or a fraction, they arent approximations or rounding

edit - page 1.999... owned
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Old Nov 6, 2006 | 07:24 PM
  #37  
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i know 1/3 = .333... but .333r * 3 = 1., not .9999r
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Old Nov 6, 2006 | 07:24 PM
  #38  
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im gonna go watch tv now.
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Old Nov 6, 2006 | 07:31 PM
  #39  
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Originally Posted by Jani
i know 1/3 = .333... but .333r * 3 = 1., not .9999r
it sure does
.333... *3 = .999 r
think about when you learned to multiply and did it vertically

0.33333...
* 3
_______
0.00009...
+ .00090...
+ .00900...
+ .09000...
+ .90000...
________
0.99999...

there is no point at which you round up to get the 1
but we know that it does indeed equal 1

enjoy tv, im gonna go rub one out, all this math got me excited h:
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Old Nov 6, 2006 | 08:41 PM
  #40  
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Originally Posted by Jani
cow=dog h:
You sir, are a hero among asians :hsugh:
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