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# PlatniumPiano

## You are now breathing manually

#### Visitor Messages

Showing Visitor Messages 391 to 395 of 395
1. December 24th, 2008 1:43 PM
Eletj
2. December 24th, 2008 4:55 AM
Soul.
hey,do uknow about legend of dragoon?i really love that game very much!
3. December 23rd, 2008 2:12 PM
IIMarckus
A(A+B-X)=-B(A+B-X)
__________________
(A+B-X)

Which I assume translates to A(A + B − X) ÷ (A + B − X) = −B(A + B − X) ÷ (A + B − X). A = −B is a valid result from this step in all cases but one: when A + B − X = 0, because division by zero is undefined. Since the second line (A + B = X) specifically states that it is zero, the proof is invalid.

You can see a similar error in this proof.
4. December 22nd, 2008 10:59 PM
IIMarckus
The math in your signature is faulty…
(A+B)A+B=X(A+B) should be (A+B)(A+B)=X(A+B), though this is probably just a typo.

The real problem with the math is in the fourth step. A + B − X = 0, so what you actually have is
A × 0 = B × 0

Which is, of course, true. Then you try to divide by zero. However, 0 ÷ 0 ≠ 1! Division by zero is undefined.
5. December 22nd, 2008 3:43 PM
destinedjagold
ya really don't need to say thanks though~
but yeah, thanks for your thanks...

sounds a bit funny...

well, you are welcome.

Biography
... ... ... ... ... ... ... ... ... ...
Interests
Hanging with friends, playing piano
Location
Yesterday
Gender
Male ♂
Occupation
^_^
Nature
Lax
Favorite Pokémon
Sceptile, Feraligatr
• Signature

If you choose not to decide, you still have made a choice.

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• Last Activity: December 27th, 2010 12:10 PM
• Join Date: December 21st, 2008
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•  560cool. Probably back.
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