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Re: favorite unsolved math problem?

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AdvorsusDuo is not online. AdvorsusDuo
Joined: 17 May 2012
Total Posts: 5265
22 Nov 2013 03:16 PM
mine would be either Goldbach's conjecture or the Riemann hypothesis
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Victimize is not online. Victimize
Joined: 09 Jun 2013
Total Posts: 1789
22 Nov 2013 03:17 PM
not so much a problem but i like fermat's last theorem
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QuadFactor is not online. QuadFactor
Joined: 19 Apr 2011
Total Posts: 333
22 Nov 2013 03:17 PM
I just can't get over that tangent doesn't even exist. It's just the ratio of sine against cosine.
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trappingnoobs is not online. trappingnoobs
Joined: 05 Oct 2008
Total Posts: 19100
22 Nov 2013 03:52 PM
"I just can't get over that tangent doesn't even exist. It's just the ratio of sine against cosine."

... how does that mean it doesn't exist? what makes sine and cosine exist more than tangent? they're both ratios too... in fact, their relationship is tight enough that they're just offset by x = -90 from each other, so you could argue one of them doesn't exist too with that logic.
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UnAdmin is not online. UnAdmin
Joined: 10 Jul 2012
Total Posts: 4706
22 Nov 2013 05:43 PM
y - y(1) = m(x-x(1))
it's like
why the extra x and y stuff
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cntkillme is not online. cntkillme
Joined: 07 Apr 2008
Total Posts: 44956
22 Nov 2013 06:54 PM
sine(x) = cosine(90 - x)
or w/e

sine(33) = cos(57)
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AdvorsusDuo is not online. AdvorsusDuo
Joined: 17 May 2012
Total Posts: 5265
23 Nov 2013 06:32 AM
bump
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digpoe is not online. digpoe
Joined: 02 Nov 2008
Total Posts: 9092
23 Nov 2013 07:26 AM
mine is pi.
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chickenman158 is not online. chickenman158
Joined: 18 Jan 2011
Total Posts: 915
23 Nov 2013 08:13 AM
1/0
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Victimize is not online. Victimize
Joined: 09 Jun 2013
Total Posts: 1789
23 Nov 2013 09:27 AM
0/0
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Prehistoricman is not online. Prehistoricman
Joined: 20 Sep 2008
Total Posts: 12490
23 Nov 2013 09:48 AM
Those aren't unsolved. Any 'problem' about the nature of infinity is not solvable in standard mathematics. There are number spaces known that can deal with these numbers, but not algebra.
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cntkillme is not online. cntkillme
Joined: 07 Apr 2008
Total Posts: 44956
23 Nov 2013 10:09 AM
0/0 should be 1!!
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digpoe is not online. digpoe
Joined: 02 Nov 2008
Total Posts: 9092
23 Nov 2013 11:45 AM
what about pi then? :(
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chickenman158 is not online. chickenman158
Joined: 18 Jan 2011
Total Posts: 915
23 Nov 2013 12:13 PM
@Prehistoricman

I know. Complex numbers are able to handle it. Just like dual numbers are able to find the end of 0.9999...

I am talking about Real numbers by default though :p
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Victimize is not online. Victimize
Joined: 09 Jun 2013
Total Posts: 1789
23 Nov 2013 12:37 PM
@cnt
it could be 1 or 0, because even though it's 0 parts out of 0 total, there's 0 parts of it
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MettaurSp is not online. MettaurSp
Joined: 20 Mar 2010
Total Posts: 3179
23 Nov 2013 01:52 PM
0/0 could technically be all real numbers, because of the fact that 0 can go into 0 infinite number of times.
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trappingnoobs is not online. trappingnoobs
Joined: 05 Oct 2008
Total Posts: 19100
24 Nov 2013 09:20 AM
If we defined a specific number for 0/0 = x then, since division is, by nature, the inverse of multiplication, then in theory, x * 0 = 0 and only x * 0 = 0. So we'd end up with x+1 * 0 = undefined.

So following that logic if 0/0 was 1 then 2 * 0 = undefined.
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VanillaLight is not online. VanillaLight
Joined: 02 Nov 2013
Total Posts: 834
24 Nov 2013 01:04 PM
Mine would have to be the square root of two.
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trappingnoobs is not online. trappingnoobs
Joined: 05 Oct 2008
Total Posts: 19100
24 Nov 2013 01:14 PM
"Mine would have to be the square root of two."

..? and how is this unsolved?
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Absurdism is not online. Absurdism
Joined: 18 Jul 2013
Total Posts: 2568
24 Nov 2013 01:23 PM
umg i have so many
Fermat's Last Theorem, Goldbach's conjecture, the Hadamard conjecture, division by 0, the abc conjecture; the list goes on.
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trappingnoobs is not online. trappingnoobs
Joined: 05 Oct 2008
Total Posts: 19100
24 Nov 2013 01:30 PM
"Fermat's Last Theorem, Goldbach's conjecture, the Hadamard conjecture, division by 0, the abc conjecture; the list goes on."

Fermat's is proven... As for division by 0, that's undefined by nature. It's not unsolved. It's undefined. There's a big difference.
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woot3 is not online. woot3
Joined: 10 Nov 2008
Total Posts: 3599
24 Nov 2013 05:00 PM
Not really unsolved, but the posts every other week annoy me.

1/3 = 0.333333 recurring

(1/3)*3 = 3/3 = 1
(0.3333333)*3 = 0.99999999 recurring

wut?
this annoys me so much.
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Prehistoricman is not online. Prehistoricman
Joined: 20 Sep 2008
Total Posts: 12490
24 Nov 2013 05:06 PM
0.9 recurring == 1

Fact.
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woot3 is not online. woot3
Joined: 10 Nov 2008
Total Posts: 3599
24 Nov 2013 05:12 PM
No, it does not. I refuse to accept it!
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awsumpwner27 is not online. awsumpwner27
Joined: 03 Sep 2011
Total Posts: 4389
24 Nov 2013 05:30 PM
Your refusal to accept it does not make it less true.
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