Page 1 of 3
#1
x = .99999999...
Multiply by 10
10x = 9.9999999...
subtract X
10x - x = 9.9999999... - .9999999...
Simplify
9x = 9
Simplify
x = 1

.333... = 1/3
3 x .333... = 3 x 1/3
.999... = 3/3
.999... = 1

.111... = 1/9
9 x .111... = 9 x 1/9
.999... = 9/9
.999... = 1

1 = 9/9
9/9 = 9 x 1/9
9 x .111... = .999...
thus 1 = .999...

More equations proving this here.

.999999.... = 1
Discuss.
Last edited by RPGoof at Aug 6, 2008,
#2
No it doesn't?
"We barely remember who or what came before this precious moment"

Tool, anyone?
Alter Bridge, maybe?
A bit of John Mayer?
Some beethoven sounds delightful, as well.
#4
yo dawg, is dis shyt legit? wer tha bitches at yo?
-\_/-
Quote by Fred1000000
BlackZeppelin is like Ghandi. With a bigger sense of humor.
it's the silence between the notes that makes the music.
#5
I remember a giant thread on this. This a last year stuff. Don't bring it up again. Get 'outta here, kid.

*pats on back*
Quote by denizenz
I'll logic you right in the thyroid.

Art & Lutherie
#7
Quote by RPGoof
x = .99999999...
Multiply by 10
10x = 9.9999999...
subtract X
10x - x = 9.9999999... - .9999999...
Simplify
9x = 9
Simplify
x = 1

.99999... = 1
Discuss.

You're supposed to subtract X from BOTH sides. So no, it doesn't.
Fender Hot Rod Deluxe
Gibson Faded V
Warmoth Strat copy
Epiphone Hummingbird (FS!!)
Ibanez SR400QM
Fender BXR100
Reggae Bass Covers mahn!!!

#8
yeah there are so many loopholes in math

whateves, no big deal
Quote by LeoKhenir
I love you, Killer Bacon.
#11
Quote by stinger12345
You're supposed to subtract X from BOTH sides. So no, it doesn't.

but x= .999999.... so it doesn't really matter what value you use. They are both interchangeable.
#12
Quote by stinger12345
You're supposed to subtract X from BOTH sides. So no, it doesn't.

x = .99999...

so it does work
CHECK YOUR MATH
(sorry for the double post)
Quote by LeoKhenir
I love you, Killer Bacon.
#13
Quote by stinger12345
You're supposed to subtract X from BOTH sides. So no, it doesn't.


owned.

EDIT: Nevermind.
Quote by Ylasto
R.I.P Ean.

Are there any other members of Lynyrd Skynyrd who are dead?
#15
Um, No.
Quote by ElMaco
My last pay check was £0 working 0 hours. I can't believe how easy it was
#16
Quote by InvaderTSN
0/0=1, which means you can divide by zero.

OMGWTFHAX


if you think about 0/0 can = any number

cause 2 X 0 = 0 so there for 0/0 should = 2
#17
this is the same as 1/3=.333333... so 3/3=.9999999

just kinda rounds.. dunno


Saying the Red Hot Chili Peppers have no talent is like saying Guy Fawkes didn't have an epic mustache.
#18
Quote by InvaderTSN
0/0=1, which means you can divide by zero.

OMGWTFHAX


No it doesn't because you can't divide by zero therefore the answer is undefined, not 1. Try it on a calculator if you don't believe me. And it can't be a fraction because you can't have 0ths, because then your results are undefined.
#19
Quote by RPGoof
but x= .999999.... so it doesn't really matter what value you use. They are both interchangeable.

Ok ok you're right, I missed that first line of x = .99999

So in conclusion: .999 = 1 IF x=.999

Which isn't the same thing as just plain old 1 = .999

Sounds like TS just learned how to use variables kind of...
Fender Hot Rod Deluxe
Gibson Faded V
Warmoth Strat copy
Epiphone Hummingbird (FS!!)
Ibanez SR400QM
Fender BXR100
Reggae Bass Covers mahn!!!

Last edited by stinger12345 at Aug 6, 2008,
#20
1+1=2


discuss.
Living is easy with eyes closed...
--------------------------

Quote by GnR_ROK
I'm surprised you returned to this thread after cheeseman owned you.
#23
Quote by dark&broken
No it doesn't because you can't divide by zero therefore the answer is undefined, not 1. Try it on a calculator if you don't believe me. And it can't be a fraction because you can't have 0ths, because then your results are undefined.


wait, hes right, forget what I said.
#24
who gives a sh*t, the real gem we've found here is that 0/0=1
what the f*ck doodz!!1!?

EDIT: oh wait...i just read the posts above me
#25
Quote by dark&broken
No it doesn't because you can't divide by zero therefore the answer is undefined, not 1. Try it on a calculator if you don't believe me. And it can't be a fraction because you can't have 0ths, because then your results are undefined.


Bah, forgot about the fraction thing.
#26
When you subtract x, technically you have to use X, not an equivilant of x, at least in higher math....
so 10x - x = 9.9999-x
10 = 9.9999-x

I'm sure there is a rule that prevents this kind of thing, I just don't know it

Edit: Sounds like TS just learned how to use variables kind of...

THIS
Quote by tjhome28
It annoys me when kids sit there playing the sweet child o mine or smoke on the water intro riff repeatedly
and badly
and so loud the whole shop can't hear themselves think
and with the worst amp settings possible

[/rant]


+1
Last edited by Xaveir at Aug 6, 2008,
#27
Quote by InvaderTSN
0/0=1, which means you can divide by zero.

OMGWTFHAX



No. because for it to be true 0x0 must equal 1, which it doesnt
Keep Strong Grundy


Quote by metaldud536
Milkshakes. They bring the boys to the yard.



Quote by humperdunk
OWNED
#28
.99999 = 1x

That's what it should say...right? O.o
The Pit. The Movie.
#29
Quote by cheeseman3001
1+1=2


discuss.

OMGWTFHAX

Also on a more serious note:

Quote by Spay
.99999 = 1x

That's what it should say...right? O.o

1x=x
Quote by bdfs05
u got me

Quote by alyxmelia
your a sick young lady tbh
#30
I've been failing math for 5 years.


This makes me feel really dumb.
To me:
Quote by crazy8rgood

In fact, I almost ALWAYS agree with YourDad.

Quote by itchy guitar
One of the best replies ever.

In the same thread

Do you love Arsis?
#31
Quote by dark&broken
No it doesn't because you can't divide by zero therefore the answer is undefined, not 1. Try it on a calculator if you don't believe me. And it can't be a fraction because you can't have 0ths, because then your results are undefined.


actually the term for this is indeterminate form (i think). cause the three possible answers are 0, infinity (undefined), or one. not to mention that the issue that it can equal any constant.

but yes... .9999 repeating is in fact one. the reason why is because in order to be defined as two separate numbers must have a number between them. What is in between them? an infinite number of 9's and then a 5? what the difference between 1 and .9999 repeating? an infinite, never ending series of 0's and then a 1? It makes more sense than you think.

you can try any form of math to solve this... I've used arithmetic, algebra and calculus and still came to the simple solution .9999 repeating=1. It is a fact... get over it!
#32
If you're using 0.999999... (repeating) then it's valid.

As the number of 9's go to infinity, the value goes to 1.

You can prove it using the formula for a sum of an infinite geometric series.

edit: http://en.wikipedia.org/wiki/0.999...
#33
Quote by YourDad
I've been failing math for 5 years.


This makes me feel really dumb.

I'm with you on that one.
-\_/-
Quote by Fred1000000
BlackZeppelin is like Ghandi. With a bigger sense of humor.
it's the silence between the notes that makes the music.
#34
If you put it into a calculator it doesn't work. Watch:

x = .99999999
10x = 9.9999999
10x - x = 9.9999999 - .99999999
9x = 8.99999991
x = 0.99999999

So...yeah, you're wrong.
#35
why don't we post some of the Millennium Problems and give a goal to work with. Million bucks to anyone that can solve any of these! Dibbs on Riemann's Hypothesis!
#36
Quote by RPGoof
x = .99999999...
Multiply by 10
10x = 9.9999999...
subtract X
10x - x = 9.9999999... - .9999999...
Simplify
9x = 9
Simplify
x = 1

.99999... = 1
Discuss.

Why would you multiply by 10?
Besides in order for this to be right you should be able to plug your answer back into the equation.
10x1-1=9.9999... I don't think so. Someone correct me if I'm wrong.
#37
mathias07 knows what he's talking about, listen to him
Quote by tjhome28
It annoys me when kids sit there playing the sweet child o mine or smoke on the water intro riff repeatedly
and badly
and so loud the whole shop can't hear themselves think
and with the worst amp settings possible

[/rant]


+1
#38
Quote by hardrock1315
If you put it into a calculator it doesn't work. Watch:

x = .99999999
10x = 9.9999999
10x - x = 9.9999999 - .99999999
9x = 8.99999991
x = 0.99999999

So...yeah, you're wrong.

9.999 repeating minus .999 repeating does not equal 8.999 repeating.
9.999 repeating minus 1.00000009 would equal 8.999
Lrn2simplemath
#39

point?

and you technically can't subtract an infinite decimal sequence
██████████████████████████
████████████████████████
█████████████████████
██████████████████████
█████████████████████
██████████████████████████
██████████████████████████


LET'S GO BUCKS
#40
lol wtf maths is wrong lol i knew i never needed it very much anyway lol
You are like a hurricane
There's calm in your eye.
And I'm gettin' blown away
To somewhere safer
where the feeling stays.
I want to love you but
I'm getting blown away.
Page 1 of 3