Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#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..

Offline

#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.

Offline

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

MathsIsFun
Administrator
Registered: 2005-01-21
Posts: 7,711

Re: A + B = A?


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

Offline

#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.

Offline

Board footer

Powered by FluxBB