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2DWorlds Forums
''does 0.999 = 1?'' - Printable Version

+- 2DWorlds Forums (http://2dworlds.buildism.net/forum)
+-- Forum: 2DWorlds (http://2dworlds.buildism.net/forum/forumdisplay.php?fid=4)
+--- Forum: 2DWorlds Discussion (http://2dworlds.buildism.net/forum/forumdisplay.php?fid=10)
+--- Thread: ''does 0.999 = 1?'' (/showthread.php?tid=6148)

Pages: 1 2

''does 0.999 = 1?'' - Eric - 06-24-2011

Nope, It's only 0.999

RE: ''does 0.999 = 1?'' - AK-47 - 06-24-2011

TruDat!

RE: ''does 0.999 = 1?'' - Brassrhino - 06-24-2011

Lolwut? 0.999 = 0.999. Herp, Derp. ^_^

RE: ''does 0.999 = 1?'' - Fire - 06-24-2011

unless you round to the nearest integer Smile

RE: ''does 0.999 = 1?'' - lol - 06-24-2011

Actually it meant 0.999... (Notice the punctuation) = 1

http://en.wikipedia.org/wiki/0.999...

RE: ''does 0.999 = 1?'' - Ming-Yan - 06-24-2011

@Lol

In that equation, the .999 is rounded and is not accounted for.
Think about it.
99999999999999999...
10000000000000000...

is not the same as
1
1

RE: ''does 0.999 = 1?'' - AK-47 - 06-24-2011

[Image: 680fee112b7c09afa53b3f35eea46f9c.png]

Crap. This is correct.

RE: ''does 0.999 = 1?'' - Ming-Yan - 06-24-2011

That is COMPLETELY INCORRECT.

It doesn't work because 9.999... is not rational and therefore when multiplied is rounded.
You can tell the rounding error by plugging it back in.

10(1) =/= 9.999...
why? because 10 does not equal 9.999...

Didn't teachers tell kids to check their answers by plugging it back in?
Also this would appear as invalid in a calculator because a variable cannot have 2 numbers unless they are the same.
You cannot have X as .999 and as 1, they are different numbers. [unless it is a quadratic which it is not]

Which leads to another point, don't trust wikipedia.

RE: ''does 0.999 = 1?'' - Ming-Yan - 06-24-2011

Like I said, even if the first 2 equations check, if one doesn't...there was an error.
10(1) =/= 9.999... no matter how you slice it.
X cannot equal 2 numbers unless a quadratic and a quadratic that consists of 1 would only be X = -1, 1.

X = 1 and .999... is an invalid answer to any equation unless rounded.
There was a rounding error when 10 was multiplied to an irrational number.

That's like saying 10Ï€ is the same as 31.4, it's not. Pi is irrational and therefore would be rounded when trying to multiply it.

RE: ''does 0.999 = 1?'' - noob007 - 06-24-2011

Think of it as being infinitely close to 1.


Something that is *infinitely* close to something, is that thing.