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Old Jun 21, 2006 | 10:09 AM
  #121  
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Originally Posted by reno96teg
let it go, man. i have a math minor and an engineering degree, and i believe that this guy is full of crap.
Me too. I don't care whether the guy is full of crap. I haven't made a judgement one way or the other, which is why i'm still posting. I'm responding to clickwir.
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Old Jun 21, 2006 | 10:15 AM
  #122  
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Originally Posted by Kestrel
I'm going to say this one more time...0.9repeating, which is the number in question, is an infinite construct: that is, 0.9 followed by an infinite number of 9's. We are talking about infinite sum of numbers, and the limit or infinite sum is the correct way to deal with it. It seems counterintuitive, but the math supports the conclusion.
using limits IS the correct way to do it, but in regards to the original question, a number with a repeating decimal CANNOT be equal to a real/whole number
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Old Jun 21, 2006 | 10:18 AM
  #123  
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Originally Posted by Jani
using limits IS the correct way to do it, but in regards to the original question, a number with a repeating decimal CANNOT be equal to a real/whole number
I heard this mentioned before, I don't understand. You are saying that 1/3 doesn't equal .33333 repeating?
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Old Jun 21, 2006 | 10:19 AM
  #124  
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Originally Posted by Buyimports2
I heard this mentioned before, I don't understand. You are saying that 1/3 doesn't equal .33333 repeating?
1/3 * 3 = 1

.33 repeating * 3 = .99repeating
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Old Jun 21, 2006 | 10:20 AM
  #125  
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Originally Posted by Jani
using limits IS the correct way to do it, but in regards to the original question, a number with a repeating decimal CANNOT be equal to a real/whole number
i think you guys will never solve this. Because mathematical science says it is the same while logic says it isint. Just because something is mathemicly doesnt mean it is logicly and vice versa...
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Old Jun 21, 2006 | 10:21 AM
  #126  
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Originally Posted by Jani
1/3 * 3 = 1

.33 repeating * 3 = .99repeating
and i think that's what is comes down to... it is the same. in math anywais.h:
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Old Jun 21, 2006 | 10:23 AM
  #127  
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Originally Posted by Tark
i think you guys will never solve this. Because mathematical science says it is the same while logic says it isint. Just because something is mathemicly doesnt mean it is logicly and vice versa...
HAHA!!! Somebody tell that to that to clickwir.
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Old Jun 21, 2006 | 10:24 AM
  #128  
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Originally Posted by reno96teg
let it go, man. i have a math minor and an engineering degree, and i believe that this guy is full of crap.
There are a lot of math professors who don't disagree with him. I have a math minor and two engineering degrees, and while he may be an arrogant SOB I don't think he's entirely wrong.

The problem with the statement is that it goes against every notion we have of less than, greater than, or equal to. How can something that looks less than one be equal to one? But the concept of infinity is counterintuitive in its nature. Inf - Inf doesn't equal 0, and what the hell is 2*Inf or Inf+5? What's 0.9 repeating, but 1 - x where x gets very very small. But if its infintesimally small, do we acknowledge its existence, or do we just say it's nothing? Modern calculus, physics, and engineering disregards x's existence at this point, and x becomes zero, so 0.9repeat = 1. This is the realm I was trained in, so I too, agree that x becomes 0 and so 0.9repeat = 1. Number theory also supports this conclusion as well.

The point is, that the guy isn't full of shit. It's a legitimate statement supported in many realms of mathematics, but goes against your basic notions of how numbers work.
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Old Jun 21, 2006 | 10:26 AM
  #129  
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Originally Posted by Jani
1/3 * 3 = 1

.33 repeating * 3 = .99repeating
That could almost be proof that .99999 = 1.

I see what you are saying though. Thanks
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Old Jun 21, 2006 | 10:27 AM
  #130  
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Modern calculus, physics, and engineering disregards x's existence at this point, and x becomes zero, so 0.9repeat = 1. This is the realm I was trained in, so I too, agree that x becomes 0 and so 0.9repeat = 1. Number theory also supports this conclusion as well.
im an EE student, and i also agree with you...... but nowhere in the original proof or answer does it say that they are disregarding the tiny difference between 1 and .9repeating.
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