The crazy math thread!

2007-01-09 11:39:43

#1

Daysniper: Member; +42|6645

So I know there are probably many math geeks among the super-cool video game players here at BF2s. So lets tell the world about some very very odd things in math! Math FTW!
Anyway, so did you know that .999 repeating = 1? No rounding involved.
Here's the proof-
.9999 r. = x
9.999 r. = 10x
-x -x
9 = 9x
1=x!

And.....

e = 2.71828183...
pi = 3.14195....
i = an imaginary number

e^pi x i = -1

an irrational number raised to the irrational number x an imaginary number power = -1? YES! And this is the basis for lots of engineering. I am afraid to go on a bridge now .

And if you can figure how this is wrong then you get karma! Yay:

x = y
x^2 = xy
x^2 - y^2 = xy - y^2
(x-y)(x+y) = y(x-y)
------------- --------
(x-y) (x-y)

x+y = y

if x =1 and y = 1 then 1 + 1 = 1

Yay!

Last edited by Daysniper (2007-01-09 12:07:35)

2007-01-09 11:41:45

#2

King_County_Downy: shitfaced; +2,791|6607|Seattle

That's very interesting! 7 is another cool number to find wierdness with. I can't remember all the things seven is cool for, but maybe someone else here does.

Sober enough to know what I'm doing, drunk enough to really enjoy doing it

2007-01-09 11:44:31

#3

=Karma-Kills=: "Don't post while intoxicated."; +356|6594|England

Cool... but old

2007-01-09 11:47:01

#4

Yaocelotl: :D; +221|6660|Keyboard

That has already been reviewed and argued. PLEASE USE THE FUCKING SEARCH

Last edited by Yaocelotl (2007-01-09 11:47:17)

2007-01-09 11:48:41

#5

King_County_Downy: shitfaced; +2,791|6607|Seattle

Yaocelotl wrote:
That has already been reviewed and argued. PLEASE USE THE FUCKING SEARCH

Why don't you be an asshole about it while you're at it?

Sober enough to know what I'm doing, drunk enough to really enjoy doing it

2007-01-09 11:54:38

#6

SuperSlowYo: slow as you go; +124|6570|Canaduhhh.. West Toast

https://img384.imageshack.us/img384/9404/findxqp9.jpg

i am no mathmagician... my skills are weak... this picture is about as good as my math gets

Last edited by SuperSlowYo (2007-01-09 11:55:14)

2007-01-09 11:54:43

#7

Titch2349: iz me!; +358|6362|uk

There is some way of proving 0 = any number aswell.......

2007-01-09 11:54:47

#8

SaladForks: /ph34r; +129|6592|Eastern USA

Daysniper wrote:
x = y
x^2 = xy
x^2 - y^2 = y - xy
(x-y)(x+y) = y(x-y)
------------- --------
(x-y) (x-y)

x+y = y

if x =1 and y = 1 then 1 + 1 = 1

Yay!

If x=y, then (x-y) = 0. Division by zero, Good game.

2007-01-09 11:57:26

#9

Titch2349: iz me!; +358|6362|uk

SuperSlowYo wrote:
http://img384.imageshack.us/img384/9404/findxqp9.jpg

i am no mathmagician... my skills are weak... this picture is about as good as my math gets

4 squared + 3 squared = x squared

16 + 9 = x squared

25 = x squared

sqaure root of 25 = x

5 = x

Last edited by Titch2349 (2007-01-09 11:57:47)

2007-01-09 12:00:36

#10

Daysniper: Member; +42|6645

Can anyone point me to the thread where it has been reviewed and argued?

2007-01-09 12:01:24

#11

Gawwad: My way or Haddaway!; +212|6694|Espoo, Finland

Any equation that has an answer that can't be true, has a fault in it.

2007-01-09 12:03:35

#12

Daysniper: Member; +42|6645

Gawwad wrote:
Any equation that has an answer that can't be true, has a fault in it.

But maybe by some wierd forec of the universe the false is actually true, and the true is instead false!

https://i83.photobucket.com/albums/j318/daysniper/gif.gif

2007-01-09 12:04:08

#13

Surgeons: U shud proabbly f off u fat prik; +3,097|6499|Gogledd Cymru

Daysniper wrote:
And if you can figure how this is wrong then you get karma! Yay:

x = y
x^2 = xy
x^2 - y^2 = y - xy
(x-y)(x+y) = y(x-y)
------------- --------
(x-y) (x-y)

x+y = y

if x =1 and y = 1 then 1 + 1 = 1

Yay!

the highlighted bit should read as follows x^2 -y^2 = xy-xy

2007-01-09 12:06:15

#14

Paco_the_Insane: Phorum Phantom; +244|6654|Ohio

http://forums.bf2s.com/viewtopic.php?id=55153

2007-01-09 12:06:22

#15

Daysniper: Member; +42|6645

surgeon_bond wrote:
Daysniper wrote:
And if you can figure how this is wrong then you get karma! Yay:

x = y
x^2 = xy
x^2 - y^2 = y - xy
(x-y)(x+y) = y(x-y)
------------- --------
(x-y) (x-y)

x+y = y

if x =1 and y = 1 then 1 + 1 = 1

Yay!
the highlighted bit should read as follows x^2 -y^2 = xy-xy

nope. But I did do it wrong. It should be read as xy - y^2 . Fixed.

Last edited by Daysniper (2007-01-09 12:07:56)

2007-01-09 12:09:06

#16

hurricane2oo5: Do One Ya Mug !!!; +176|6774|mansfield

37 - 7 = 30

yay

2007-01-09 12:11:03

#17

heggs: Spamalamadingdong; +581|6398|New York

Anyway, so did you know that .999 repeating = 1? No rounding involved.
Here's the proof-
.9999 r. = x
9.999 r. = 10x
-x -x
9 = 9x
1=x!

really?
my calculations say no.

so you have

.99999r = x

you mulitply both sides by 10.

9.99999r = 10x

you subtract both sides by x.

9.9999r - x = 10x-x

9.9999r - x = 9x

9.999r = 10x.

x = 9.9999r/10= .999999r

you get nowhere. unless you can prove me wrong, i fail to see how this makes any sense.

if x = .9999r, then it equal .9999r. i don't see how you can manipulate this equation to make it anything different. if you do something to one side, you must do it to the other.

Last edited by heggs (2007-01-09 12:13:05)

Remember Me As A Time Of Day

2007-01-09 12:13:11

#18

Daysniper: Member; +42|6645

heggs wrote:
Anyway, so did you know that .999 repeating = 1? No rounding involved.
Here's the proof-
.9999 r. = x
9.999 r. = 10x
-x -x
9 = 9x
1=x!

really?
my calculations say no.

so you have

.99999r = x

you mulitply both sides by 10.

9.99999r = 10x

you subtract both sides by x.

9.9999r - x = 10x-x

9.9999r - x = 9x

9.999r = 10x.

x = 9.9999r/10= .999999r

you get nowhere. unless you can prove me wrong, i fail to see how this makes any sense.

x = .9999 r so 9.9999r - .99999r = 9. Done.

Last edited by Daysniper (2007-01-09 12:13:31)

2007-01-09 12:14:03

#19

Gawwad: My way or Haddaway!; +212|6694|Espoo, Finland

heggs wrote:
Anyway, so did you know that .999 repeating = 1? No rounding involved.
Here's the proof-
.9999 r. = x
9.999 r. = 10x
-x -x
9 = 9x
1=x!

really?
my calculations say no.

so you have

.99999r = x

you mulitply both sides by 10.

9.99999r = 10x

you subtract both sides by x.

9.9999r - x = 10x-x

9.9999r - x = 9x

9.999r = 10x.

x = 9.9999r/10= .999999r

you get nowhere. unless you can prove me wrong, i fail to see how this makes any sense.

if x = .9999r, then it equal .9999r. i don't see how you can manipulate this equation to make it anything different. if you do something to one side, you must do it to the other.

Please, go here. Don't ruin this thread before it started.

2007-01-09 12:16:56

#20

Surgeons: U shud proabbly f off u fat prik; +3,097|6499|Gogledd Cymru

Daysniper wrote:
surgeon_bond wrote:
Daysniper wrote:
And if you can figure how this is wrong then you get karma! Yay:

x = y
x^2 = xy
x^2 - y^2 = y - xy
(x-y)(x+y) = y(x-y)
------------- --------
(x-y) (x-y)

x+y = y

if x =1 and y = 1 then 1 + 1 = 1

Yay!
the highlighted bit should read as follows x^2 -y^2 = xy-xy
nope. But I did do it wrong. It should be read as xy - y^2 . Fixed.

if x=y right then x^2 should equal y^2 !

2007-01-09 12:18:06

#21

Daysniper: Member; +42|6645

surgeon_bond wrote:
Daysniper wrote:
surgeon_bond wrote:

the highlighted bit should read as follows x^2 -y^2 = xy-xy
nope. But I did do it wrong. It should be read as xy - y^2 . Fixed.
if x=y right then x^2 should equal y^2 !

yes. Am I missing something?

2007-01-09 12:22:50

#22

Surgeons: U shud proabbly f off u fat prik; +3,097|6499|Gogledd Cymru

refer to my first post x^2 - y^2 = xy-xy ---- not xy-y

edit; oops my bad i didnt see your revisiions

Last edited by surgeon_bond (2007-01-09 12:24:26)

2007-01-09 12:23:01

#23

heggs: Spamalamadingdong; +581|6398|New York

Gawwad wrote:
heggs wrote:
Anyway, so did you know that .999 repeating = 1? No rounding involved.
Here's the proof-
.9999 r. = x
9.999 r. = 10x
-x -x
9 = 9x
1=x!

really?
my calculations say no.

so you have

.99999r = x

you mulitply both sides by 10.

9.99999r = 10x

you subtract both sides by x.

9.9999r - x = 10x-x

9.9999r - x = 9x

9.999r = 10x.

x = 9.9999r/10= .999999r

you get nowhere. unless you can prove me wrong, i fail to see how this makes any sense.

if x = .9999r, then it equal .9999r. i don't see how you can manipulate this equation to make it anything different. if you do something to one side, you must do it to the other.
Please, go here. Don't ruin this thread before it started.

ahh, but he didn't state the rounding and such as he was doing this. HIS method doesn't make sense, the thread that you referenced does.

and i'm not ruining the thread, i worked it out, and stated my answer. i wasn't looking to start trouble.

and from a practicality standpoint, .99999999999r is going to be so infinitely small away from 1, that you wouldn't be able to measure this value anyway. the tolerances in the equipment would cause error before you could read this value anyway. so essentially, .99999r does equal 1.

Remember Me As A Time Of Day

2007-01-09 12:32:34

#24

Gawwad: My way or Haddaway!; +212|6694|Espoo, Finland

heggs wrote:
Gawwad wrote:
heggs wrote:
Anyway, so did you know that .999 repeating = 1? No rounding involved.
Here's the proof-
.9999 r. = x
9.999 r. = 10x
-x -x
9 = 9x
1=x!

really?
my calculations say no.

so you have

.99999r = x

you mulitply both sides by 10.

9.99999r = 10x

you subtract both sides by x.

9.9999r - x = 10x-x

9.9999r - x = 9x

9.999r = 10x.

x = 9.9999r/10= .999999r

you get nowhere. unless you can prove me wrong, i fail to see how this makes any sense.

if x = .9999r, then it equal .9999r. i don't see how you can manipulate this equation to make it anything different. if you do something to one side, you must do it to the other.
Please, go here. Don't ruin this thread before it started.
ahh, but he didn't state the rounding and such as he was doing this. HIS method doesn't make sense, the thread that you referenced does.

and i'm not ruining the thread, i worked it out, and stated my answer. i wasn't looking to start trouble.

and from a practicality standpoint, .99999999999r is going to be so infinitely small away from 1, that you wouldn't be able to measure this value anyway. the tolerances in the equipment would cause error before you could read this value anyway. so essentially, .99999r does equal 1.

Scroll fast trough the other thread and you will know why I thought this might ruin this thread
9 pages of nonsense...

And to put it straight for good: 0.999~=1 in math, no rounding needed
(0.999~ meaning a zero followed by an infinite number of nines)

2007-01-09 12:51:45

#25

B.Schuss: I'm back, baby... ( sort of ); +664|6851|Cologne, Germany

didn't we have this already...?

closed

EDIT:oh, well, I really don't care. re-opened after a heart-breaking appeal...

I had no idea what you were talking about anyway. But don't you geeks dare posting child pornography..

BF2S Forums The crazy math thread!

Yaocelotl wrote:

Daysniper wrote:

SuperSlowYo wrote:

Gawwad wrote:

Daysniper wrote:

surgeon_bond wrote:

Daysniper wrote:

heggs wrote:

heggs wrote:

Daysniper wrote:

surgeon_bond wrote:

Daysniper wrote:

surgeon_bond wrote:

Daysniper wrote:

surgeon_bond wrote:

Gawwad wrote:

heggs wrote:

heggs wrote:

Gawwad wrote:

heggs wrote:

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