''does 0.999 = 1?''

[Eric]

Nope, It's only 0.999

[AK-47]

TruDat!

[Brassrhino]

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

[Fire]

unless you round to the nearest integer

[lol]

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

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

[Ming-Yan]

@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

[AK-47]

Crap. This is correct.

[Ming-Yan]

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.

[Ming-Yan]

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.

[noob007]

Think of it as being infinitely close to 1.


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