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## #1 2005-12-15 21:55:25

simtom
Member
Registered: 2005-12-15
Posts: 1

### A + B = A?

Hey, check this out:

If  A=B
let A = 3 and B = 3
B^2=AB
so A^2 - B^2 = A^2 - AB
(A+B)(A-B)=A(A-B)
A+B = A ??

...I know why this is wrong.. but I think it's pretty cool..

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## #2 2005-12-15 22:13:46

mathsyperson
Moderator
Registered: 2005-06-22
Posts: 4,900

### Re: A + B = A?

Yes, I've seen that one before. Doesn't stop it from being cool, though.

Here's why it doesn't work:

Why did the vector cross the road?
It wanted to be normal.

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## #3 2005-12-15 22:51:28

MathsIsFun
Registered: 2005-01-21
Posts: 7,657

### Re: A + B = A?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman

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## #4 2005-12-16 06:29:18

mikau
Member
Registered: 2005-08-22
Posts: 1,504

### Re: A + B = A?

Disturbing.

A logarithm is just a misspelled algorithm.

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