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/sci/ - Science & Math

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9197123 No.9197123 [Reply] [Original]

So tired of 0.9999...=1 threads. If you're memeing,please stop,because this meme died a couple of centuries ago and is no longer funny. If you're not, you're a brainlet, and please get off /sci/

>> No.9197130

>>9197123
name one number between .999... and 1

>> No.9197144

Wait, is this not real? 1/3 + 1/3 + 1/3 = 3/3 = 1
1/3 = .333...

>> No.9197164

>>9197123
waaaaaaaaaaaaaaaaaaaaaaahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

as long as there's newfag pansies like you who rage at stale memes, the memes will keep coming

>> No.9197178

>>9197130
I know that 0.999...=1 btw because I'm not a fucking moron. You didn't understand my point.

>> No.9197187

>>9197130
(0.999... + 1)/2

>> No.9197188

>>9197144
>1/3 = .333...
1/3 != 0.333...

>> No.9197196
File: 296 KB, 500x375, 1429134969909.png [View same] [iqdb] [saucenao] [google]
9197196

ITT : People that don't understand real numbers.

>> No.9197202

>>9197123
If .99999999..... = 1, does this imply that .99999999... equals .9999999......8, and so on, suggesting that all numbers equal each other?

>> No.9197213

>>9197188
nice bait

>> No.9197216
File: 56 KB, 645x773, 1503550881033.jpg [View same] [iqdb] [saucenao] [google]
9197216

>>9197213

>> No.9197219

>>9197187
This number must be between .999... and 1. Here it is: .999...95

>> No.9197249

>>9197123
Ironic shitposting is still shitposting.
Good job making the only .9999... = 1 thread on the board.

>> No.9197316

>>9197202

>.9999999......8

So anon, you're saying with that notation, you write an infinite number of 9s and then, AFTER you write an INFINITE number of 9s, you write an 8?

What a fascinating number that doesn't exist.

>> No.9197630

0.9999...>0.999...

>> No.9197895

>>9197178
Says the guy posting it now...

>> No.9197898

0.999... doesn't even exist.

>> No.9198084

>>9197188
prove it

[math]
\begin{align*}
&0.33... \\
3 & \overline{)1_0 \;\;\;\;\;} \\
& \;\;\;\underline{9} \\
& \;\;\;1_0 \\
& \;\;\;\;\; \underline{9} \\
& \;\;\;\;\; 1 \;\; etc
\end{align*}
[/math]

>> No.9198089

>>9197898
one shouldn't think so

>> No.9198116

0.9999 = 9(1/10 + 1/100 + 1/1000 + •••) = 9((1/10)/(9/10)) = 1

>> No.9198149

[math] \displaystyle
1 = \frac {3}{3} = 3 \cdot \frac {1}{3} = 3 \cdot 0. \bar{3} = 0. \bar{9}
[/math]

>> No.9198186
File: 395 KB, 540x960, 2017-09-18 22.29.58.jpg [View same] [iqdb] [saucenao] [google]
9198186

>>9198149
Some things are not as hard as they seem.

>> No.9198200

>>9198149
1/3 != 0.333...

>> No.9198226

>>9198200

>>9198084

>> No.9198247

>>9197187
(a+a)/2=a

>>9197219
See >>9197316

>> No.9198324

>>9197187
0.999(n)... + 0.000(n+1)x

>> No.9198349

>>9198324
yeah the ... destroys whatever is right of it

>> No.9198371

>>9197202
Yeah, all the numbers of that form equal each other. If you write 0. then write an infinite number of 9s then you write any natural number after that, it's always gonna be 1.

>> No.9198379
File: 124 KB, 953x613, image.jpg [View same] [iqdb] [saucenao] [google]
9198379

>> No.9198449

>>9197123
0.99999.... = 1/3+2/3
1/3=0.33333....=0.33333
2/3=0.66666....=0.66667
0.33333+66667=1

If you do not round your numbers go and find the end of 0.9 recurring and stop spamming this shitty meme on this board.

>> No.9198466

>>9198379
You know, there is something fundamentaly wrong in modern maths, you fuckers are theorizing all that bullshit, and all your trolling is fun...but when all that theorized math will get an aplication in engineering we all will shit bricks, ya know!?

>> No.9198536

>>9198449
>0.33333....=0.33333
where can we send the nobel prize

>> No.9198694

>>9198536
Nobel prizes aren't given for Mathematics because memes have no value.

>> No.9198713

>>9198247
1 is between 1 and 1.
I didn't say anything wrong.

>> No.9198716

>>9198713
1>1 and 1<1

where can we send the nobel prize

>> No.9198787

>>9198716
1>=1 and 1<=1
FTFY

>> No.9198797

>>9198787
not "between"

talk about moving goalposts

>> No.9198821

>>9198371
So this means every number is equal to each other, because I can write 2.0000.......0 and its equal to 2.0000.........1 and so on, so every number must be equal to each other.

>> No.9198836

>>9198821
Not every number but every number of the form "2.000...something" (there is an infinite number of zeroes). But there are of course numbers that can't be written in that form.

>> No.9198837

>>9198821

>>9198349

>> No.9199323

0.999...+x=1.
x is really small number (1/∞). This number is small enough to assume that it is equal to zero without much error when used in other calculations.

>> No.9199380

>>9198379
This image is self contradictory. If .000000...1 doesn't exist, you can't subtract .99999...... either, as this would imply .99999999 ends.

>> No.9199494

>>9198379
>all these “proofs”
>no mention of the completeness axiom

>> No.9199555

>>9197123
[math]x=0.\dot9[/math]
[math]10x=9.\dot9[/math]
[math]9x= 10x-x = 9.\dot9-0.\dot9=1[/math]
[math]9x=1[/math]
[math]\therefore 0.\dot9=1[/math]

>> No.9199578

>>9199555

[math]1/9[/math] is not [math]1[/math] anon

it should be written as [math]9x=9[/math]

[math]9x/9x =1[/math] [math]9/9=1[/math]

>> No.9199734

B I G B O Y C A U C H Y S E Q U E N C E S

>> No.9199756

>>9199380
Those number do exist, and performing operations with them is valid. They are just equal to 0 and 1 respectively.

>> No.9199761

>>9199756
So .9999999999999..., doesn't exist either?

>> No.9199762

>>9199494
>Implying brainlets that refuse to believe 0.999....=1 will understand the completeness axiom.

>> No.9199768

http://aynrandlexicon.com/lexicon/infinity.html

>> No.9199769 [DELETED] 

>>9199762
X = 3
10X = 30
10X - X = 30 - 3
7X = 27
X = 3.86

3.86 = 3

>> No.9199777

>>9199769
*unzips calculatrice*

x = 4
20x = 24
20x - x = 24 - 4
16x = 20
16x + 5(4) = 20 + 20
21x = 40
21(4) = 40
therefore 21 = 10

>> No.9199782

>>9199777
>x = 4
>20x = 24
0/10 bait

>> No.9199787

>>9197178
You didn't phrase it correctly you fucking mongoloid, from your subhuman-tier choice of words it seems like you're seriously convinced the equivalence it's not true

>> No.9199885

>>9197123
>So tired of 0.9999...=1 threads
>so I made another one
Good job, Bobby.

>> No.9200194

>>9197123
∞+1 != ∞

∞/(∞+1) != 1
0.999... !=1

>> No.9200314

if

1/2 + 1/4 + 1/8 ... = 1,

Then

9/10 + 9/100 + 9/1000 ... = 1,

Since the later approaches 1 more quickly than the former.

QED

>> No.9200320

>>9200194
>Comp Sci brainlets
REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

>> No.9200349

>>9200314
better yet, use the non-approach approach.
every line is =1 already

[math] \displaystyle
\begin{align*}
1 = \left (\frac{9}{10} + \frac{1}{10} \right )
&= 0.9 + \frac{10}{100} \\
= 0.9 + \left (\frac{9}{100} + \frac{1}{100} \right )
&= 0.99 + \frac{10}{1000} \\
= 0.99 + \left (\frac{9}{1000}+\frac{1}{1000} \right )
&= 0.999 + \frac{10}{10000} \\
= 0.999 + \left (\frac{9}{10000} + \frac{1}{10000} \right )
&= 0.9999 + \frac{10}{100000} \\
&\vdots
\end{align*}
\\ \displaystyle
\Rightarrow 0.\overline{9} = 1
[/math]

>> No.9200420

>>9200194
Holy fuck this made me cringe so hard, I think I just started another hurricane

>> No.9200530

if 0.999... = 1,

what's the difference between an open interval and a closed interval?

what does 1.000... - 0.999... equal?

By the way if anyone ever tries to argue that a number doesn't exist, feel free to ignore them. Numbers exist when they are defined and infinitesimals can be defined.

>> No.9200582

>>9199782
>four = four
>twenty four = twenty four
what seems to be the problem?

>> No.9200714

>>9197316
>Implying an infinite number of nine exist

>> No.9200753
File: 59 KB, 1012x540, 4segs2.png [View same] [iqdb] [saucenao] [google]
9200753

choosing between 0.999...=1 and 0.999!=1 is an axiom that can be taken either way depending on the framework of analysis.

>http://2occatl.net/Physics/1703.0073v3.pdf

>> No.9200777

>>9200530
>what's the difference between an open interval and a closed interval?
(0;1) doesn't countains 0 and 1 while [0;1] does. Are you even trying anon ?

>what does 1.000... - 0.999... equal?
0, that's especially obvious since you're starting from the hypothesis 1=0,999... Are you retarded anon ?

>By the way if anyone ever tries to argue that a number doesn't exist, feel free to ignore them. Numbers exist when they are defined and infinitesimals can be defined.
I define the "anon is fucking dumb" functions as the sctrictly increasing functions [math]f:\mathbb R \to \mathbb R[/math] which are differentiable with derivative <0. There, i defined the anon is fucking dumb functions, therefore they must exists, right anon ? Are you baiting anon ?

Yes, there are mathematical constructions of the infinitesimals, but that's not the question here : even in nonstandard analysis 0,999...=1 is still true.

>> No.9200912

>>9199777
Frenchfags need to get out. This website is for white people only.

>> No.9200922

>>9197316
>>9197898
>>9199380
>>9199756
>>9199761
>>9200530
>>9200714
>>9200777
Numbers don't exist in the first place, except as a concept

>> No.9200947

>>9200922
How is that related to >>9200777 ?

lrn2 reading comprehension fagget

>> No.9202772

>>9199777
check'd
incorrect
no respect

>> No.9202969
File: 28 KB, 409x404, facechange alex jones.jpg [View same] [iqdb] [saucenao] [google]
9202969

>>9198116
THATS THE WAY UH HUH UH HUH
I LIKE IT
UH HUH UH HUH

>> No.9203057

>>9200314
>Since the later approaches 1 more quickly than the former

Does it?

9/100 < 1/4
9/1000 < 1/8
etc.

>> No.9203063

>>9197219
>...95
Infinite one! Infinite two!