for 0.9... = 1 true believers

mchammer187

Diamond Member
Nov 26, 2000
9,114
0
76
Originally posted by: Kyteland
Originally posted by: PlasmaBomb
That line is fine it is essentially

b^2 - b^2 = b^2 - b^2

I'm saying it doesn't follow from his second line.

subtract b^2 from both sides and then do a substitution of b^2 -> a^2 on the right
 

TridenT

Lifer
Sep 4, 2006
16,800
45
91
Originally posted by: scott
GodlessAstronomer Drove Me To It

a = b

ab = b^2

ab - b^2 = a^2 - b^2

b(a - b) = (a + b)(a - b)

b = a + b

b = b + b

b = 2b

1 = 2

ha ha ha lol . If true then 0.9... = 1




(who'll be first to point "it" out and win a gold star for their forehead?)


How does b = a + b if a = b?

That only works if it a = 0

You could have infinite A's...

B = A + B

B = A + A + B

B = A + A + A +B

:-/

Just substitute in for B every time...
 

PlasmaBomb

Lifer
Nov 19, 2004
11,636
2
81
Originally posted by: Epic Fail
Originally posted by: Kyteland
Originally posted by: scott
GodlessAstronomer Drove Me To It

a = b

ab = b^2

ab - b^2 = a^2 - b^2


b(a - b) = (a + b)(a - b)

b = a + b

b = b + b

b = 2b

1 = 2

ha ha ha lol . If true then 0.9... = 1




(who'll be first to point "it" out and win a gold star for their forehead?)

Does not compute.

Still fail after the edit.

OK...

ab = b^2 Right?

so ab - b^2 = 0

a = b

Therefore a^2 = b^2

a^2 - b^2 = 0

0 = 0 Right?

Therefore

ab - b^2 = a^2 - b^2 (since 0 = 0)
 

So

Lifer
Jul 2, 2001
25,923
17
81
Originally posted by: scott
GodlessAstronomer Drove Me To It

a = b

ab = b^2

ab - b^2 = a^2 - b^2

b(a - b) = (a + b)(a - b)

b = a + b

b = b + b

b = 2b

1 = 2

ha ha ha lol . If true then 0.9... = 1




(who'll be first to point "it" out and win a gold star for their forehead?)

"GodlessAstronomerDroveMeToIt.jpg"

It being "prove to everyone on the internet that you're bad at algebra" ;)
 

So

Lifer
Jul 2, 2001
25,923
17
81
Originally posted by: PlasmaBomb
Originally posted by: Epic Fail
Originally posted by: Kyteland
Originally posted by: scott
GodlessAstronomer Drove Me To It

a = b

ab = b^2

ab - b^2 = a^2 - b^2


b(a - b) = (a + b)(a - b)

b = a + b

b = b + b

b = 2b

1 = 2

ha ha ha lol . If true then 0.9... = 1




(who'll be first to point "it" out and win a gold star for their forehead?)

Does not compute.

Still fail after the edit.

OK...

ab = b^2 Right?

so ab - b^2 = 0

a = b

Therefore a^2 = b^2

a^2 - b^2 = 0

0 = 0 Right?

Therefore

ab - b^2 = a^2 - b^2 (since 0 = 0)

The problem is, a valid proof requires every step to be explicitly stated.
 

frostedflakes

Diamond Member
Mar 1, 2005
7,925
1
81
Originally posted by: mchammer187
Originally posted by: Kyteland
Originally posted by: PlasmaBomb
That line is fine it is essentially

b^2 - b^2 = b^2 - b^2

I'm saying it doesn't follow from his second line.

subtract b^2 from both sides and then do a substitution of b^2 -> a^2 on the right
You can't do that, though. If you do something to one side you have to do it to the other.