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0.999999... = 1?

Name: Anonymous 2006-05-25 9:53

What the fuck. Why is that true. They got different numbers in them.

Name: Anonymous 2006-05-31 10:40

>>34 It is true that all matter and energy is quantised but time and probability and other factors exist as real numbers.

Name: Anonymous 2006-05-31 11:29 (sage)

>>41
That implies that the computing power of the universe is beyond that of a Universal Turing Machine. That's extremely counter-intuitive; it makes much more sense for space and time to be quantized, and I see no reason for it not to be.

Name: Anonymous 2006-05-31 13:48

Is 0.9999999... = 1?

Name: Anonymous 2006-05-31 13:59

Don't believe the stupid lies. How could 0.999... be 1 when we all know that it isn't? Think!

Name: Anonymous 2006-05-31 14:38

assume .999~ = 1

subtract 1 from both sides
-.000~1 = 0
multiply by 2
-.000~2 = 0
thus
.000~1 = .000~2
divide both sides by .000~1
1 = 2

Name: Anonymous 2006-05-31 14:59

.000~1

We are beyond math now.  We are in the realm of Meta Math!

Name: Styrofoam 2006-05-31 23:10 (sage)

>>39
>>40

Why do you fucking retards return every time this thread occurs?  I can only hope that each time I post this, one person is convinced, that way, assuming there is only a finite number of idiots here, eventually you will all learn.

Let:
x = 0.999~
Multiply both sides by 10.
10x = 9.999~
Subtract 0.999~ (which is equal to x) from both sides.
9x = 9
Divide both sides by 9.
x = 1
We began by stating that x = 0.999~, therefore.
0.999~ = 1

A proof that requires nothing more than middle-school algebra.  Satisfied?

Name: Anonymous 2006-05-31 23:51

>>45 Uh, no. There is no last digit in the infinite expansion of 0.999... So you can't do operations like that. Analog of using infinities and ordinary arithmatic to show that 1=2...

(And if there were, which there isn't, it would be a 9, not a 1)

Name: Anonymous 2006-06-01 1:11

>>39
>>40
What the fuck? People are posting all sorts of mathematical proofs, and you're saying "to your knowledge"? Jesus fucking christ. Learn to yield to someone who has a clue.

http://en.wikipedia.org/wiki/Proof_that_0.999..._equals_1

Name: Anonymous 2006-06-01 3:39

>>47
>>49

Noob. 0.999... is infinitely close to 1, but does not equal 1. Don't worry, you'll get it in a few years when you learn about things like LIMITS

Name: Anonymous 2006-06-01 5:07

This forum's sucks...
as long as i can count my money, it doesn't matter to argue that fucking number.
MATHer FUCKER!!

Name: Anonymous 2006-06-01 6:42

>>50

You know that link 49 and 5 posted up? You might want to look at that, I think you'll find it jolly interesting.

Name: Anonymous 2006-06-01 7:13

>>49,52
There exist people who are fundamentally unable to comprehend the concept of infinity. Don't worry too much about it. Instead, we should revel in our superiority.

Name: Anonymous 2006-06-01 8:02

that's funny because if you understood infinity you would understand that 0.999... isn't 1

Name: Anonymous 2006-06-01 12:35

Remember what infinity means. Alright, instead of using mathematical rigour (which is self-evidently reliable anyway) I'll try and use common reasoning. 0.9999... is infinitely close to 1 right? The seat of my trousers is infintely close to the chair I'm sitting on, that means it's touching it. In the same way 0.9999... touches 1, it therefore equals 1.

Name: Anonymous 2006-06-01 14:48

Nice try, but no. It's kinda like the integers 1 and 2 are touching, but they are not equal. That's just how mathematics works, sorry.

Name: Anonymous 2006-06-01 15:58 (sage)

The reason why the 1=2 proof works is because you're dividing by zero during the proof.
As for The "10-.999~"=9, I'd say that it'd equal 9.000~ with a one at the end (of infinity). However, for anything non-purely theoretical, yes, you can round it and make it one.

Name: 55 2006-06-01 17:55

>>56

I didn't mean that, read it again. 'Touch' was used to illustrate the fact that you can imagine something being infinitely close to something means it touches it. As in, as the difference between 0.999... and 1 becomes infinitely closer you cannot possibly measure and state it. They are therefore not consecutive, but the same number; they are touching rather than the shortest of distances apart.
So, taken in this sense, 1 and 2 are consecutive, but not touching.


...Just look at the wiki, that'll make sense.

Name: Anonymous 2006-06-01 19:14 (sage)

>>58
Two possibilities:
1. These people are trolling. You are wasting your time.
2. They are like Christians; no amount of logic will make them see they are wrong. You are wasting your time.

Name: Anonymous 2006-06-02 0:12

>>58

Infinitely close = touching is a "real world approximation", and doesn't really stand up to mathematical rigour. 0.999... is as much 1 as 22/7 is Pi. That is, not at all.

Name: Anonymous 2006-06-02 1:06

>>50, >>54, >>56, >> 60

no because you are retarded

Name: Anonymous 2006-06-02 1:11

Except that 22/7 is only equal to pi when you're looking at the first few decimal places, yet .999... is infinitely close to one when there are an infinite number of nines (that is, the decimal is written out fully), so that argument is pretty stupid.

There is no real number between .999... and 1, so therefore .999...=1.

Name: Anonymous 2006-06-02 1:17

>>57
"with a one at the end (of infinity)"
There is no end of infinity! That's the whole point. There isn't a one at the end because THERE IS NO END.

For purely theoretical math, yes, 0.999... is EXACTLY equal to 1. It's no different than writing 2/2 or cos(0) or 3*5/15. It's exactly equal to 1.

>>60
You're talking about mathematical rigour? That's laughable. Find me a mathematician on the planet who thinks 0.999... is not 1, and I'll give you my first born son.

Name: Anonymous 2006-06-02 1:19

>>50
Uhh, the real number line is continuous, so the limit of x at any point is equal to x. Since the limit of 0.999... is 1, then 0.999... = 1.

In other words, you just proved yourself wrong. Congratulations.

Name: Anonymous 2006-06-02 1:48

>>34
There are no fractions in physics? Are you high?
Example 1 of 10983758302098373856563924: electrons have spin 1/2.

Name: Anonymous 2006-06-02 2:05

This is way totally something worth getting yr panties all in a bunch over because it has so many real world practical applications.

Name: Anonymous 2006-06-02 2:21

You all fail. 0.999... isn't 1 and no amount of whining and false analogies will make it so.

>>63

Abraham Robinson.

I expect that child to be airmailed to me ASAP. And don't forget to insure it. On the off chance that it's not white, only ship me its heart (sacrificial reasons).

Name: Anonymous 2006-06-02 2:31

n = 0.9999...
10n = 9.9999...
9n = 9
n = 1

Name: Anonymous 2006-06-02 4:05

i think your math is flawed

n= .999999...
10n=9.999999....
9n=8.99999999....and infinity of nines ....9999991
n= .99999999...

n does not = 1

Name: Anonymous 2006-06-02 6:24 (sage)

>>67
Abraham Robinson
lolol
I think you're getting your systems mixed up here, genius!

>>69
Read this again:
There is no end of infinity! That's the whole point. There isn't a one at the end because THERE IS NO END.

Name: Anonymous 2006-06-02 6:37

>>70

You are a bad loser. At least admit defeat with a shred of dignity.

Name: Anonymous 2006-06-02 6:51

>>71 You wouldn't know dignity if it beat Super Mario Bros. in 5 minutes and 47 seconds.

Name: Anonymous 2006-06-02 6:58 (sage)

>>71
I'm not even the guy who he'd been talking to. I just found his bringing up of nonstandard analysis hilarious.

Name: Anonymous 2006-06-02 9:26

>>65
Let's not forget
a) pi, e, and every other mathematical constant
b) h, c, and every other physical constant
lollerwaffles

Name: Anonymous 2006-06-02 9:36

>>67
Way to fail. Abraham Robinson was not dealing with numbers you fucking tard. He was performing analysis on hyperreals; he defined things in sequences. Guess what, if you convert a hyperreal to ACTUAL NUMBERS, you get zero, which means 0.999... = 1. Another tard who proved himself wrong. Congratulations.

Learn some fucking a) basic calculus, b) set theory, and c) group theory, and then stop trying to apply random concepts to the real number line.

I can't believe how fucking stupid everyone is. This is like an argument on religion. You can throw away pages and pages of mathematical proofs, but you read a random piece of nonstandard math that doesn't even apply to real numbers, and you fucking cling to it like a security blanket.

Name: Anonymous 2006-06-02 9:39

>>69
>9n=8.99999999....and infinity of nines ....9999991

I think YOUR math is flawed. You just put a last number on your decimal expansion there pal. The number has to end in "...", that's the whole point. What is so complicated here?

Name: Anonymous 2006-06-02 9:45

>>74
Not to mention the fact that trancendentals (due to radicals) and imaginary numbers (anything in wave analysis, such as electrodynamics or quantum mechanics) are also everywhere in physics.

Immesureable fail on the integer physics there bub.

Name: Anonymous 2006-06-02 12:18

>>65
Don't forget, quarks have a charge of either -1/3 or 2/3.

Name: Styrofoam 2006-06-03 2:43

I think the guy who said there are no fractions in physics was confused by quanta.  Still, it's pretty stupid.

Also, I'm going to say it again because people don't seem to be getting it: You can't have "an infinite number of zeros (or nines) and then a one."  There is no fucking end of infinity.  If you want to stick a one after an infinite strings of zeros, start running to the end of this infinite line.  When you get there, you'll have proven me wrong.  And you had better start now; infinity is a long way to run.

Name: Anonymous 2006-06-03 2:53

1/3 != .33333... it is just the closest representation that this stupid arab number system can give us. down with it i say

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