d2jsp
Log InRegister
d2jsp Forums > Off-Topic > General Chat > Homework Help > Does .999999... = 1? > Iso Proofs
Prev19394959697121Next
Closed New Topic New Poll
Member
Posts: 18,180
Joined: Jun 5 2009
Gold: 5.00
Warn: 10%
Jul 7 2010 08:51pm
Quote (Magikarpet @ Jul 8 2010 12:45pm)
no

because 10x = 9+x
is 9.99=9.999


*sighs*
Okay I am gonna write everything slowly, step by step for you so you understand.
Please tell me which step it is which you disagree with:

Step 1: x = 0.999... (this is merely substituting x with 0.999...)
Step 2: 10x = 9.999... (multiplying both sides of the equation by 10)
Step 3: 10x - x = 9.999... - 0.999... (this is merely substituting 10x - x with what we already know 10x equals and x equals)
Step 4: 9.999... - 0.999... = 9 (simple mathematical equation)
Step 5: 9x = 9 (since the last equation was the same as 10x - x which equals 9)
Step 6: x = 1 (divide both sides of the equation by 9)
Step 7: 0.999... = 1 (since we know that x = 0.999... and x = 1, then 0.999... must equal 1)
Member
Posts: 9,968
Joined: Mar 6 2010
Gold: 61.84
Warn: 20%
Jul 7 2010 09:56pm
Quote (Hammer_Hdin @ Jul 7 2010 09:51pm)
*sighs*
Okay I am gonna write everything slowly, step by step for you so you understand.
Please tell me which step it is which you disagree with:

Step 1: x = 0.999... (this is merely substituting x with 0.999...)
Step 2: 10x = 9.999... (multiplying both sides of the equation by 10)
Step 3: 10x - x = 9.999... - 0.999... (this is merely substituting 10x - x with what we already know 10x equals and x equals)
Step 4: 9.999... - 0.999... = 9 (simple mathematical equation)
Step 5: 9x = 9 (since the last equation was the same as 10x - x which equals 9)
Step 6: x = 1 (divide both sides of the equation by 9)
Step 7: 0.999... = 1 (since we know that x = 0.999... and x = 1, then 0.999... must equal 1)


guess what! 10x = 9.99 :O
uMad

unless ur trying to disguise bad math skills by saying you have the power to change only one side of the equation to INF + (1) while keeping the other thing just INF
and if you say they are the same thing, well i will just magically make it back to INF again and prove u wrong. kthxkrai nub.
Member
Posts: 9,968
Joined: Mar 6 2010
Gold: 61.84
Warn: 20%
Jul 7 2010 10:06pm
Quote (Magikarpet @ Jul 7 2010 10:56pm)
guess what! 10x = 9.99 :O
uMad

unless ur trying to disguise bad math skills by saying you have the power to change only one side of the equation to INF + (1) while keeping the other thing just INF
and if you say they are the same thing, well i will just magically make it back to INF again and prove u wrong. kthxkrai nub.

so x=.999...
but ur saying you can do 10 (.9999...) = 9+(.999...)
just to dumb it down for u idiotic nubby, because the main reason why .9... can't be one is due to the fact that it will always be infinitely away from one ; )

there disproved both ur ways, now cry
Member
Posts: 9,899
Joined: May 7 2006
Gold: 550.00
Jul 7 2010 10:12pm
OHSHIT Magikarpet has just managed to disprove something considered uncontroversial by mathematics for the last century with various different proofs coming from all sorts of branches of math.

Nice trolling, try harder.

Seriously though, go around this one:

1/9=.11111....
2/9=.22222....
3/9=.33333....
4/9=.44444....
5/9=.55555....
6/9=.66666....
7/9=.77777....
8/9=.88888....
9/9=.99999....

Get out.
Member
Posts: 9,968
Joined: Mar 6 2010
Gold: 61.84
Warn: 20%
Jul 7 2010 10:21pm
Quote (Sioux @ Jul 7 2010 11:12pm)
OHSHIT Magikarpet has just managed to disprove something considered uncontroversial by mathematics for the last century with various different proofs coming from all sorts of branches of math.

Nice trolling, try harder.

Seriously though, go around this one:

1/9=.11111....
2/9=.22222....
3/9=.33333....
4/9=.44444....
5/9=.55555....
6/9=.66666....
7/9=.77777....
8/9=.88888....
9/9=.99999....

Get out.


no 9/9 = 1
Member
Posts: 9,899
Joined: May 7 2006
Gold: 550.00
Jul 7 2010 10:38pm
Quote (Magikarpet @ Jul 8 2010 12:21am)
no 9/9 = 1


Exactly.
Member
Posts: 9,968
Joined: Mar 6 2010
Gold: 61.84
Warn: 20%
Jul 7 2010 10:49pm
Quote (Sioux @ Jul 7 2010 11:38pm)
Exactly.


u are using fractions, ur limiting urself by dividing

do u realize that .9/9 = .1
and 1/9 =.1...
as you can see one is true, while the other is just an aproximation which doesn't mean it's exactly it...
and for 5/6/7/8

at some point for 5 theres a . (6), at 6 a . (7) etc which would make, yes 9 have a . (10)


maybe i could show u what i did on excel

1 0.111111111111111
2 0.222222222222222
3 0.333333333333333
4 0.444444444444444
5 0.555555555555556
6 0.666666666666667
7 0.777777777777778
8 0.888888888888889
9 1.00000000000000
10 1.11111111111111

Obviously the equation for 1/9 - 9/9 is flawed at it's base and through the enigma of infinity the numbers eventually round up on their on.


this is rly bad wording, sowwy

but here's a good thing, i'm right, u'r not.

even on their own 6/9 = .66666666666666666666667

or close to that ( in coordination w/ the amount of 6's)

so u used bad math also considering 6, 7, 8, 9 do not equal what u said the equal

This post was edited by Magikarpet on Jul 7 2010 10:57pm
Member
Posts: 9,899
Joined: May 7 2006
Gold: 550.00
Jul 7 2010 11:00pm
Quote (Magikarpet @ Jul 8 2010 12:49am)
u are using fractions, ur limiting urself by dividing

do u realize that .9/9 = .1
and 1/9 =.1...
as you can see one is true, while the other is just an aproximation which doesn't mean it's exactly it...
and for 5/6/7/8

at some point for 5 theres a . (6), at 6 a . (7) etc which would make, yes 9 have a . (10)


maybe i could show u what i did on excel

1 0.111111111111111
2 0.222222222222222
3 0.333333333333333
4 0.444444444444444
5 0.555555555555556
6 0.666666666666667
7 0.777777777777778
8 0.888888888888889
9 1.00000000000000
10 1.11111111111111

Obviously the equation for 1/9 - 9/9 is flawed at it's base and through the enigma of infinity the numbers eventually round up on their on.


this is rly bad wording, sowwy

but here's a good thing, i'm right, u'r not.

even on their own 6/9 = .66666666666666666666667

or close to that ( in coordination w/ the amount of 6's)

so u used bad math also considering 6, 7, 8, 9 do not equal what u said the equal


lol.
Member
Posts: 9,968
Joined: Mar 6 2010
Gold: 61.84
Warn: 20%
Jul 7 2010 11:09pm
Quote (Sioux @ Jul 8 2010 12:00am)
lol.


hey 6/9 does not equal .66666...!
Member
Posts: 9,899
Joined: May 7 2006
Gold: 550.00
Jul 7 2010 11:09pm
Quote (Magikarpet @ Jul 8 2010 01:09am)
hey 6/9 does not equal .66666...!


lol.
Go Back To Homework Help Topic List
Prev19394959697121Next
Closed New Topic New Poll