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#1 |
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Banned
Join Date: May 2008
Posts: 3
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So, I went to my AP physics class today and the teacher asked us a question, and he wanted our answer to be JUSTIFIED by us with specific evidence, here was the question:
Does 1 = .999...(repeating), literally as it is I and two other people got this right out of thirty, so I want to see how many here can get it right, ready, go! EDIT: The underscore didn't go in the right place so I had to fix it, it's .999...forever Last edited by Cerulean Angel; 09-7-2008 at 09:34 PM.. |
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#2 |
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sonder
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Well 1/3 = .333.
2/3 = .666. and 3/3 = .999. But 3/3 is 1. So technically it does ...
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#3 |
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I V vi iii IV I IV V
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I assume you mean .999 repeating (your repeating sign is somehow over the "D" in "Does")
I'm not that great at math, but my friend is. bringst3hgrind (9:28:10 PM): ok bringst3hgrind (9:28:11 PM): um bringst3hgrind (9:28:12 PM): let bringst3hgrind (9:28:19 PM): x = .999999 repeating bringst3hgrind (9:28:31 PM): so bringst3hgrind (9:28:43 PM): 10x = 9.999999999999999999 bringst3hgrind (9:28:56 PM): subtract x from both sides bringst3hgrind (9:29:01 PM): 9x = 9 bringst3hgrind (9:29:04 PM): x = 1 Edit: ninja'd |
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#4 |
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Banned
Join Date: May 2008
Posts: 3
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waiting for more before I give out the answer, and there's more than one justification, I'm looking more for an algebraic formula or something, but that was a good way of putting it
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#5 | |
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Banned
Join Date: May 2008
Posts: 3
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Quote:
The other way is true, but my teacher wanted a more solid answer |
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#6 |
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Retired BOSS
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1. ban evasion, so banned.
2. .999 does NOT equal 1. but .999... (Repeating) DOES equal 1. proofs: proof a: ![]() proof b: ![]() proof c: ![]() there are more... http://en.wikipedia.org/wiki/0.999... edit: 3. this is a retardedly easy and basic and well known problem to be given out in an AP Physics class.
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RIP Last edited by Tasselfoot; 09-7-2008 at 09:40 PM.. |
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#7 |
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<<Insert Title Here>>
Join Date: Sep 2004
Location: Regina, SK, Canada
Age: 31
Posts: 1,436
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I also wonder what relevance this holds to Physics. I think it would be better suited to a Math class.
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#8 |
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Very Grave Indeed
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I'm not good at math, why does this thread title have anything to do with me?
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#9 |
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let it snow~
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People think you're smart.
Logically, it doesn't. Mathematically, it does. It makes logical people like me hate mathematical people like Tass. This and that stupid Monty Hall problem. |
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#10 |
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Very Grave Indeed
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Monty Hall makes sense to me now.
So does the comparative size of infinities, but that one took a lot of explaining. A lot of things which are 'true' in math are highly counterintuitive to non-mathematicians. |
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#11 |
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Retired BOSS
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I love the Monty Hall problem.
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