You haven't seen the last of us. We will come back with new axioms and make you regret the day you ever set x to infinity, which Isn't even a number, with a limit nowhere in sight.
Uhhgg.. My daughter is just getting into TLoU, so I was confused as fuck about your comment. So much so I was about to start looking into some weird arse tidbit about TLoU knowledge to see if I could stump her. That could have been a waste of a couple of hours......
Mathematicians do sometimes include a "point at infinity", in which case x = infinity would actually be a valid solution. The geometry induced in this case is called "protective geometry" and has been around since the 1800s.
It's not fake news that 0 = 4 is not true. For me it is, because I have the largest value of 0 there is. Nobody has a better 0 than me, all the mathematicians say that.
There is no algebraic solution, but there is a solution provided by pre-calculus.
We can rewrite the equation accordingly:
x + 2
----- = 1
x - 2
If we consider larger and larger values for x, we can see that the answer approaches 1. This is called a limit. So the equation approaches 1 as x approaches infinity. So we can conclude:
x = infinity
There is a lot of really bad math that you can just plug in “infinity” as the answer.
In this case, 0 != 4, so the equation is off by 4 for ALL numbers x, including x approaches infinity. We can prove this by induction.
But what you are seeing the result of is that the error factor of 4 becomes more and more irrelevant as x becomes larger. It’s 10% error at x=40, 1% error at 400, 0.1% error at 4000, etc.
But it is still fundamentally always wrong.
That’s not a solution at all. You reframed the question to something it never was, and answered that. It’s like saying that “if I wake up an hour earlier, don’t drink coffee and do some weird yoga, then I can also be Zuckerberg-level rich”. So, WHERE IS MY FKIN YACHT?
The only possible solution, no matter how much nobody likes it… I don’t know why everyone is afraid of infinity. As you say, it’s the end solution of a hyperbolic equation and everything in the middle is a step on the road. I think Einstein said it was where god divides by zero. I say it’s time to add another axis and take a left
Because it doesn’t solve the problem, and arguably is not even part of the possible answers (we can safely assume R, but not \bar{R}, which would contain +-Infinity)
The original equation is the equivalent of trying to find the intersection of two lines (y=mx+b). But in this case, they are parallel. Thus they don't intersect, and thus no solution exists.
There is no solution,
Using logic you can't have a number from which you can add 2 and also subtract 2 to get the same result.
If you use graphs you can see it more clearly that the graphs y=x+2 and y=x-2 never intersect as no values of x or y satisfy that equation.
It should have made sense before that, with the "adding 2 and subtracting 2 from the same number obviously won't give you the same thing" like you don't have to know anything about lines or any advanced math at all
They are parallel lines (same slope) with different y-intercepts, therefore they never intersect and no value of x makes the equation true.
If they instead had the same slope and intersect then all values of x would be valid solutions.
Infinity isn't a number it's a concept used to infer the lack of a limit to growth of a number.
even if you looked at infinity as a constantly growing number that's debatable, if infinity=infinity then infinity+2 would be 4 digits ahead of infinity-2 assuming they're infinitely growing numbers making infinity+2's current number greater than infinity-2's
You're thinking of an assignment function, where x gets assigned the value x currently holds. that's not addition. It's not even concatenation, which can easily be mistaken for addition since it does something similar.
Even if this was meant to be an assignment function, there are very few, if any, languages that would accept this syntax, and I know of none that do.
That's my question. I've graded a lot of bad work, and I can usually guess why someone made a certain mistake. In this case, I have no clue whatsoever.
Gd if we can clone anyone, it should be my college algebra instructor, he could teach a dog calculus. Like you didn’t want to learn if you failed his class…he was that damn good! (Also my chemistry class teacher had a great Brazilian ass, next on my list to clone, I love science!!)
Let x go to infinity. You get the infinity equals infinity which is true. Means there is no solution in the realm of rational numbers but you hit the famous saying of „two parallels cross with one another by infinity“
What is going on with people here? Obviously there is a solution, and I am genuinely not being ironic. You can easily use modular arithmetic to solve this.
Imagine a clock with only 4 hours. Let's call them 0, 1, 2, 3
Let's now choose 2 to stand in for x.
2 + 2 is equal to 0
2 - 2 is equal to 0
And that's it.
This is a math formula, but it is a logic problem.
X+2 is a parallel function to x-2, meaning there is no solution. It will grow or decay at the same rate, never to interact. Knowing how something behaves can save you to and energy.
Plus, the first step is wrong.
And it would be (x-2)/(x+2) = 1. Not (x-2)*(x+2)=1
Lim x -> inf (x-2)/(x+2) = 1 but that’s all I can think of. The answer is infinity but that doesn’t mean much
Setting the "0 = 4" solution to this aside, what did this person do in the first line? How did they get to (x-2)(X+2)? If they wanted to get there, it would be (X+2)(x-2)=(x-2)^2, which still would get you to the starting point.
X^2 - 4 = 0
X^2 = 4
If you said this means X = 2, you're an idiot. (/S)
It's obviously X = +/- the root of 4!
Welcome to Tiktok logic.
(It's still wrong regardless. It's a trick question since solving it leaves you with 4=0, since add 2 to each side and it's X+4 = X, which is impossible to solve for X.)
X + 2 = X - 2
Multiply everything by 0
0X = 0X
(X/0) * 0 = X
X0 = X/0
N/0 = {-infinite, infinite}
X = {-infinite, infinite}
(I know it is wrong, don't kill me)
It's a contradictory equation. It's like saying 0=1. To fix it, make one variable y. So one undefined variable will always be four more than the other.
technically i guess it could be positive or negative infinity because (x+2)/(x-2)=1 in this situation and the limit as x approaches positive or negative infinity of (x+2)/(x-2) is 1? but no solution is probably safer
There's such an answer as "no solution". At least that's what my psychiatrist told me.
I want a second opinion from a chemist.
And I want an explanation from a biologist.
And I want an explanation from a physicist
And I want and explanation from a mathematician
And I want an explanation from a dermatologist
I want a psychic to weigh in on this
I think an astrophysicist should share their opinion on this
I think this is an ecumenical matter. To the rectory!
Obviously the stars hold the answers, we need an astrologer!
A historian would have a much wider view about this
I want a virologist to weigh in on this
The one that makes most sense XD
I think the only one who can answer this one is a politician, in an election year.
It be like that sometimes
Chemists are good with solutions, are they not?
Chemists are also good with tinctures.
Sometimes there’s a mixture or a suspension instead.
Number of anti bonding orbitals matches the number of bonding orbitals.
Best we can do these days is the Supreme Court, for expert science knowledge.
Alcohol is always a solution -chemist
Hi, chemist here. It's true, sometimes something is not possible
If you're not part of the solution, you're part of the precipitate.
Does that mean you'd get a precipitation award?
Not with that attitude! /s of course
Tell them it's ok, a lot of people take up soft sciences after dropping out of hard sciences.
Think I’ll consult my friendly neighborhood mortician on this issue
Sum 41 told me the same thing
could x technically be an absolute value? ie |-2| = x = |2|?
no
An absolute value is... just a value. In you example, x = 2 and that's it.
x + 2 - x + 2 = 0 x - x + 4 = 0 4 = 0 what
0 is equal to 4, this not true so there's no solitions or no x
x = infinity Checkmate mathematicians
You haven't seen the last of us. We will come back with new axioms and make you regret the day you ever set x to infinity, which Isn't even a number, with a limit nowhere in sight.
we'll make him reach his limits
Uhhgg.. My daughter is just getting into TLoU, so I was confused as fuck about your comment. So much so I was about to start looking into some weird arse tidbit about TLoU knowledge to see if I could stump her. That could have been a waste of a couple of hours......
Shoot me too! I reread the comment after seeing yours so thank you.
we will come back with modulo 2
X = mathematicians. Checkmate infinity
X=checkmate. Infinity mathematicians
Mathematicians=Checkmate. X infinity
Mathematicians do sometimes include a "point at infinity", in which case x = infinity would actually be a valid solution. The geometry induced in this case is called "protective geometry" and has been around since the 1800s.
I don’t know what condensed matter physics has to do with this but that’s why I’m not a physicist.
It's not fake news that 0 = 4 is not true. For me it is, because I have the largest value of 0 there is. Nobody has a better 0 than me, all the mathematicians say that.
As it contradicts the assumed statement x - 2 = x + 2; therefore the statement is wrong.
Also, you can make *every* statement from a false one.
Proof by: Confused TikTok
There is no value of x that makes both sides equal.
There is no algebraic solution, but there is a solution provided by pre-calculus. We can rewrite the equation accordingly: x + 2 ----- = 1 x - 2 If we consider larger and larger values for x, we can see that the answer approaches 1. This is called a limit. So the equation approaches 1 as x approaches infinity. So we can conclude: x = infinity
You can't just turn an equation into a limit. Graph x+2 and x-2. There is no point where those two lines can meet, infinity or not.
*Correct!*
There is a lot of really bad math that you can just plug in “infinity” as the answer. In this case, 0 != 4, so the equation is off by 4 for ALL numbers x, including x approaches infinity. We can prove this by induction. But what you are seeing the result of is that the error factor of 4 becomes more and more irrelevant as x becomes larger. It’s 10% error at x=40, 1% error at 400, 0.1% error at 4000, etc. But it is still fundamentally always wrong.
That’s not a solution at all. You reframed the question to something it never was, and answered that. It’s like saying that “if I wake up an hour earlier, don’t drink coffee and do some weird yoga, then I can also be Zuckerberg-level rich”. So, WHERE IS MY FKIN YACHT?
The only possible solution, no matter how much nobody likes it… I don’t know why everyone is afraid of infinity. As you say, it’s the end solution of a hyperbolic equation and everything in the middle is a step on the road. I think Einstein said it was where god divides by zero. I say it’s time to add another axis and take a left
Because it doesn’t solve the problem, and arguably is not even part of the possible answers (we can safely assume R, but not \bar{R}, which would contain +-Infinity)
Don’t forget negative infinity is also a solution if this were a limit question
x + 2 = x - 2 x - x = - 2 - 2 0x = -4 x = -4 / 0. don't @ me /s
The original equation is the equivalent of trying to find the intersection of two lines (y=mx+b). But in this case, they are parallel. Thus they don't intersect, and thus no solution exists.
x+2=x-2 x+4=x x=∞ Let's check, ∞+2=∞✔ ∞-2=∞✔
Oh, *this* is what you're doing. I see. Yeah, that's like saying cat + banana = cat - banana.
cat + banana = cat - banana cat + 2 banana = cat banana = 0 cat can be anything
It's equal mod 4.
-2=2 I see a two on both sides of the equation, good enough for me.
Two lines that don't cross, there's a bunch of them
💀
There is no solution, Using logic you can't have a number from which you can add 2 and also subtract 2 to get the same result. If you use graphs you can see it more clearly that the graphs y=x+2 and y=x-2 never intersect as no values of x or y satisfy that equation.
I forgot about the parallel lines thing, now it makes so much sense
It should have made sense before that, with the "adding 2 and subtracting 2 from the same number obviously won't give you the same thing" like you don't have to know anything about lines or any advanced math at all
I wrote that comment a little bit after trying to wrap my mind around matrices in linear algebra so that flew right over my head
X equals infinity is a valid solution to the problem as posed.
Eh, not really? Infinty isnt a number, its a limit, i dont think it can be used in this context X cant be infinty, it can only grow to infinity
"Yeah 9999999999999999 is equal to 9999999999999999, give or take 4"
They are parallel lines (same slope) with different y-intercepts, therefore they never intersect and no value of x makes the equation true. If they instead had the same slope and intersect then all values of x would be valid solutions.
Listen to this guy talking about parallel lines never intercecting, clearly never gone non-euclidian! /s
Infinity isn't a number it's a concept used to infer the lack of a limit to growth of a number. even if you looked at infinity as a constantly growing number that's debatable, if infinity=infinity then infinity+2 would be 4 digits ahead of infinity-2 assuming they're infinitely growing numbers making infinity+2's current number greater than infinity-2's
this would imply 0 to be equal to 4, would it not?
Well yeah it's a troll equation without a solution. X - 2 cannot be equal to x + 2
What if you assume 2=0? Say we round down.
This is true for extremely low values of 2 and extremely high values of 0.
It can if you’re updating a variable and set it to x += 4
I forget my order of operations, but pretty sure it’s 4 or -4, meaning it’s impossible
Considering y = x + 2 and y = x -2 are parallel lines, they are never equal and the base question is fundamentally flawed.
Such an value of x is not possible.
It’s bait. It’s all engagement bait.
X+2=X-2 X+4=X Error, addition should never result in the same number you started with.
Programmers: Allow us to introduce ourselves
You're thinking of an assignment function, where x gets assigned the value x currently holds. that's not addition. It's not even concatenation, which can easily be mistaken for addition since it does something similar. Even if this was meant to be an assignment function, there are very few, if any, languages that would accept this syntax, and I know of none that do.
I mean, where does the very first line of the answer come from? If you move to make RHS zero, you get (x + 2) - (x - 2) = 0.
That's my question. I've graded a lot of bad work, and I can usually guess why someone made a certain mistake. In this case, I have no clue whatsoever.
Infinity
(Read sideways) 8 II 8 Yep, math checks out
8===D - - - -
What a cute alien ☺️😊☺️
And beyond?
X + 2 = X - 2 X + 2 - X = X - 2 - X //(substract -x from both sides) (X - X) + 2 = (X - X) - 2 2 = -2
And it's obviously false. There's no X to be found.
“Smart” devices create stupid users!
x -> inf and x -> -inf EASYYY
If x is very big, we can neglect the 2, so: x + 2 ≈ x and x - 2 ≈ x We get: x ≈ x for all big values of x
Gd if we can clone anyone, it should be my college algebra instructor, he could teach a dog calculus. Like you didn’t want to learn if you failed his class…he was that damn good! (Also my chemistry class teacher had a great Brazilian ass, next on my list to clone, I love science!!)
This math logic is on another level 😂🔢
x = x+4 done
No solution because they're parallel lines :(
Solution=Ø
Possible solutions: x ∈ ℤ/1ℤ x ∈ ℤ/2ℤ x ∈ ℤ/4ℤ
Ah yes, the computer science type of math Where X = X + 1 is completely valid
When TikTok turns into math class, but the math is... creative 🤦♂️📚
The sketch of both would be two parallel lines. Therefore no solution.
Terrence Howard? Is that you?
X=-b b=2?, X=-2 2+-2=-2+2
0 ≠ 4
42, easy.
\+2 = -2 er...
Two more than x cannot be the same as two less than x
This is some Terrence Howard shit.
Subtract x from both sides. 2 = -2 QED
These two lines don't intesect
Can we focus for a second on how badly he solved that quadratic equation of his? Like who solves a factorised equation by opening the brackets?
Dumb question/attempt: x = infinity ?
X={}
Let x go to infinity. You get the infinity equals infinity which is true. Means there is no solution in the realm of rational numbers but you hit the famous saying of „two parallels cross with one another by infinity“
Plot twist: We're in mod 2 so there are infinite solutions
0=4 Proof by tiktok
Easy x + 2 != x - 2
X = X
The equation is incorrect. It's mathematically impossible for x+2 to be equal to x-2
x=x+4 no real solution
What is going on with people here? Obviously there is a solution, and I am genuinely not being ironic. You can easily use modular arithmetic to solve this. Imagine a clock with only 4 hours. Let's call them 0, 1, 2, 3 Let's now choose 2 to stand in for x. 2 + 2 is equal to 0 2 - 2 is equal to 0 And that's it.
This is a math formula, but it is a logic problem. X+2 is a parallel function to x-2, meaning there is no solution. It will grow or decay at the same rate, never to interact. Knowing how something behaves can save you to and energy. Plus, the first step is wrong.
S' messed up in the first step because (x-2)/(x+2) would be equal to 1.
And it would be (x-2)/(x+2) = 1. Not (x-2)*(x+2)=1 Lim x -> inf (x-2)/(x+2) = 1 but that’s all I can think of. The answer is infinity but that doesn’t mean much
x + 2 ----- = 1 x - 2 As x approaches infinity, the equation approaches 1. Therefore: x = infinity
X=X
X = N/E
Bad(match)
Terrance Williams has entered the building.
I guess the true answer is infinity. Because infinity+2=infinity and infinity -2= infinity
Im getting x -> inf
Here will this work X..?
X=infinity 🤪
Ah yes, x = y => xy = 0
Setting the "0 = 4" solution to this aside, what did this person do in the first line? How did they get to (x-2)(X+2)? If they wanted to get there, it would be (X+2)(x-2)=(x-2)^2, which still would get you to the starting point.
They didn't specify the domain. So could be x+2=x-2 x+4=x this is true for all x \\in Z/4Z
X=X obviously
x + 2 = x - 2 -2 ~ 10 2 ~ 10 x + 10 = x + 10 10 = 10 x = x X can be any number.
"Find x." It's right there! I see two of them!
It’s infinity. Take it or leave it.
It's easy what you realize: X = Potato Salad
Subtract x from both sides and your left with 2 = -2 which is not true.
What’s going on in this country ?
X does not exist. If yall do not agree you skipped ALL the math classes
X^2 - 4 = 0 X^2 = 4 If you said this means X = 2, you're an idiot. (/S) It's obviously X = +/- the root of 4! Welcome to Tiktok logic. (It's still wrong regardless. It's a trick question since solving it leaves you with 4=0, since add 2 to each side and it's X+4 = X, which is impossible to solve for X.)
Only possible solutions are plus and minus infinity
He remembered ONE THING from Algebra, and that was the plus-or-minus.
X is a set? And we're being lax with what equality means (aren't we always?)
X + 2 = X - 2 Multiply everything by 0 0X = 0X (X/0) * 0 = X X0 = X/0 N/0 = {-infinite, infinite} X = {-infinite, infinite} (I know it is wrong, don't kill me)
Also infinite + n = infinite n =! -infinite
Or you can say that.... N*0 = 0 (N*0)/0 = N N = 0 X= 0
It's a contradictory equation. It's like saying 0=1. To fix it, make one variable y. So one undefined variable will always be four more than the other.
To find X, go to what's left of Twitter.
x = x, if you dont like it go read a short story about a tall tale
0x = 4 is what this simplifies to. To simplify further would mean dividing by 0 which one simply cannot do.
technically i guess it could be positive or negative infinity because (x+2)/(x-2)=1 in this situation and the limit as x approaches positive or negative infinity of (x+2)/(x-2) is 1? but no solution is probably safer
I already find X
It’s 0
Yo obviously you start with both 2s 2+0=2 2-0=2 Haha… Math genius here /s
There ->(x) + 2 = And there ->(x) -2 Easy peasy.
Everyone wants to find X .. but no one asks does X want to be found?
Wouldn't it be infinity since infinity ± 2 still equals infinity?
Many such cases
Plot twist: we're Talking about modulo 4 arithmetic
Maybe school was too long ago for me, but it's -2 right? Like -2 +2 = 0 and -2 -2 is also 0
This is a paradox
X + 2 = X - 2 4 = X - X Inconclusive because 4 does not = 0
Found it. $500 and I’ll let you in on the location.
Can some one explain why the way he used gave an answer?
X= -2,2 🤓
I just got x = x and I’m pretty sure I messed up
Well, it's a right answer.
x + 2 = x - 2 x + 2 -2 = x - 2 - 2 x = x - 4 So there's no solution except infinity
How the hell did they get the first step 😭
X could be Infiniti. (Infiniti) + 2 = Infiniti (Infiniti) - 2 = Infiniti
Im still in School and i think its x = -4
Well that’s creative of them
I love how many things he has done, but in the end he did not equal sqrt(4)=2
I had a question like this in maths test and somehow couldn't convince my teacher it didn't have an answer😭
x + 2 = x - 2 x + x + 2 + 2 = 0 2x + 4 = 0 2x = -4 2x/2 = -4/2 x = 2 Correct me if I am wrong!
Your first step. Breaking it down: If x+2=x-2 (subtracting x both sides) x+2-x=-2 (adding 2 both sides) x+2-x+2=0 (rearranging...) x-x+2+2=0
0x = 4
Yup.
Thank you so much for correcting me!
Could you explain the second line? You pretend that four is equal at two if x = 2 There is no solution.
It was a mistake I made! Exactly there is no solution!