Y + 2 = Y ... Anyone have the answer?

old school basic, anyone??

Ok why did I just think the same exact thing?

"0+2=1, race that to the finish line at a dead run"

NOMEANSNO

You are correct to say the equation is bullshit however in mathematics we don't say that. What we say is Y+2=Y as long as 2=0, by subtracting Y from both sides, which is never, and so therefore the original equation is never true. Certainly there will be some yards who say hey what about infinity, infinity plus two equals infinity, but infinity is not a real number and therefore you are not allowed to use it as an answer.

Y is not a number.

2=0

This is the correct answer.

This is also a correct statement.

You are incorrect.

There are cases where Y = Y + 2.

One could take the derivative of both sides, with respect to Y, and the result would be true.

makes no sense what so ever.

2 = 2/2 ? wtf man

No..you are incorrect, Y+2 can never be Y regardless of how you present it Y + something is always more than Y even when Y is infinity.

If you can prove otherwise you will probably get a nobel prize..Good luck :-)

Last Edited by The Scientist on 07/06/2012 06:24 AM

Are you not familiar with the concept of vacuous truth in mathematics?

sort of obvious
once you realize what appears to be mathematics
is something else entirely

(y-y)y = 0 = y2-y2

factor the right side:
y2-y2 = (y-y)(y+y)

factor the left side:
(y-y)y = (y-y)(y+y)


Divide both sides by (y-y)....

y = y+y

1 = 2

0 the circumference, Nuit
. the center, Hadit
2 the world of illusion


all about the Binomial Reflexion Sequence....

if there would be a sale in a store where you could buy 1 bottle of coke and get 2 for free the equation would be y = y+2

so y = y+2 can be true but only if it is part of a bigger set of rules.

Look , if Y was an empty set or zero, and then you add 2 it becomes 2 and no longer empty so Y which equals the empty set would equal zero not two.

Y cannot be empty after adding 2 so your proposition fails

oops....had a typo

equation is ok now....

y+2=y^2

y = 2

yes i know cose

y=-1

y=2

yes....all leading to the square root of two....

1.414

y + 2 = y

y = conspiracy theorists

conspiracy theorists + 2 = conspiracy theorists

Mathematical logic does not seem to be your strongest point.

Consider a simple conditional statement: If 0 = 1 then 1 =2. If you look at the truth values of this conditional then you must conclude that the statement is true. The statement is vacuously true, but nonetheless true---there is no discrimination between a true statement (T->T, or F->F) and a vacuously true statement (F->T) in mathematics.

Now onto the OP's problem.

If y < y + 2 and y + 2 < y then y = y + 2.

Let p = y < y + 2, q = y + 2 < y, and r = y=y+2

Now we can look at the dichotomous outcomes and determine the falsity of the statement:

(p and q) => r
(T and F) => F
F => F
T

Whenever the antecedent is false the conditional is automatically true. If you do not believe this, then by all means go ahead and construct a truth table and see it for yourself.

Like I said, you must not understand the concept of vacuous truths in mathematics. It's a pity, I would have expected someone with the username "Scientist" to at least have a basic understanding of mathematical logic.

It does, no joke.

If it's a fonction it can be done. (loop feedback)

y=0 (or wathever number)

if y + 2 = y

if you feedback "y" in the same equation

then y + 2 = 4 and so on...

it shuold be

2Y

It has been a long time since I took Abstract Algebra but, I think you are in a finite ring where 2 and 0 are both additive inverses.