New Math

[Bartimaeus]

A fun little youtube video.

http://www.youtube.com/watch?v=tx5KDyvl ... re=related

[Senethior459]

Speaking of new math... I proved 0 is equal to 1 the other day, and I can prove that any number is equal to a number that is one lesser (or greater).
The proof:

Let x and y be nonzero numbers, and x=y

x=y | Given
x^2=xy | Multiplication
x^2-y^2=xy-y^2 | Subtraction
(x+y)(x-y)=y(x-y) | Factoring
x+y=y | Division
2y=y | Substitution
2=1 | Division
1=0 | Subtraction

You can add/subtract whatever amount to both sides, so you can prove for example that 2000=1999 by adding 1998 to each side, or that -289=-290 by subtracting 291 from each side.

Anyone see it? There is an error, and I know what it is. Do you?

[Kryptonyte]

I proved 0 is equal to 1 the other day, and I can prove that any number is equal to a number that is one lesser (or greater). Anyone see it? There is an error, and I know what it is. Do you?

No, you didn't prove it. You broke the rules of math by doing it, so therefore it's invalid.
I don't get why people say they can prove that. >.>

Because if you have

(Saying that x and y both equal 2, because they equal each other)

(2+2)(2-2)=2(2-2)

You have 0=0

You can't divide. Congratulations on not proving anything besides the fact that if you break
the rules of math, you can get an invalid statement saying that a number equals one above/below it.

[initialD]

x=y | Given
(x+y)(x-y)=y(x-y) | Factoring
x+y=y | Division


Anyone see it? There is an error, and I know what it is. Do you?

Nice trick.
since x=y. x-y will be 0
You don't get 1 by doing the division.
(x-y)/(x-y) = not define number.
That's why. Nice trick.
lol

[Dekar]

The video is really awesome

[Senethior459]

I hadn't thought about it the way you said, Krypt, but you're right. The problem I saw was what initialD found, that I'm dividing by zero.

My math teacher showed this to me the other day: http://video.dearbornschools.org/play.php?vid=442