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View Poll Results: does .9~=1?
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Do You Think .9~=1?

Old Sep 18, 2005 | 10:38 PM
  #21  
spaceman Spiff's Avatar
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^^ some kid tried to prove that .9~ =1 in one of my math classes and the teacher just shhut him down by mathmatically disproving him... and i.9~ isnt a special case .x~ =.x~ nothing else.
Old Sep 19, 2005 | 01:10 AM
  #22  
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In the end it doesnt realy matter, given enough digits the diffrence is so small as to be of no practical use. Its a mind game for board mathematicians.
Old Sep 19, 2005 | 01:43 AM
  #23  
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Originally Posted by psyclo' post='759938' date='Sep 17 2005, 10:38 PM

Infinity is not a number it is a concept. You can't technicaly do algebra with infinity.


One of my math teachers and I had a discussion aboot this. There are actually different types of infities, and I may have to take a class that is like mathematics of infinity. You can do some weird calculations with it apparently. But yes Eric, by the laws of limits .99~ is 1.





I also had a discussion with one of my engineering professors who said that it is impossible to ever get to exactly the right position with a hole or something of that sort. That you will always be at .99~ or .000001. I tried to reason that at some point you MIGHT hit exactly 0. But he's still pretty much right.



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Old Sep 19, 2005 | 04:30 PM
  #24  
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0.999... = 1 - 1/∞

since 1/∞ does not equal 0 (however close it may come),

0.999... does not equal 1.



QED.



Mark
Old Sep 19, 2005 | 04:35 PM
  #25  
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Originally Posted by inanimate_object' post='760377' date='Sep 19 2005, 02:30 PM

0.999... = 1 - 1/∞

since 1/∞ does not equal 0 (however close it may come),

0.999... does not equal 1.



QED.



Mark
you cant divide a number by infinity.



if you cant prove that the proofs are wrong then they are correct, and if they are correct then .9~ = 1
Old Sep 19, 2005 | 06:50 PM
  #26  
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Get a damn job.
Old Sep 19, 2005 | 06:57 PM
  #27  
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he does, he sells knives.
Old Sep 20, 2005 | 01:02 AM
  #28  
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I would like to take this moment to say that our little boy, Eric, is growing up. He has developed reasoning skills. Honey I'm so proud of you. Just letting you know that mama loves you.



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Old Sep 20, 2005 | 01:04 AM
  #29  
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Originally Posted by G2G' post='760598' date='Sep 19 2005, 11:02 PM

I would like to take this moment to say that our little boy, Eric, is growing up. He has developed reasoning skills. Honey I'm so proud of you. Just letting you know that mama loves you.



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(i just wanted to use this because i dont know what else you would use it for)
Old Sep 20, 2005 | 03:53 AM
  #30  
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Originally Posted by Eric Happy Meal' post='760380' date='Sep 19 2005, 10:35 PM

you cant divide a number by infinity.



if you cant prove that the proofs are wrong then they are correct, and if they are correct then .9~ = 1
It's just a representation of a number that tends towards 0.



Mark

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