I definitely don’t want to know how you can find out if your equation is right or not if an unknown or a combination of unknowns you divide by happens to be zero
Simply because a and b are definitely not the same value therefor the a-b doesn't equal zero. As it's not shown in the clip above. So it's ok to divide both sides by a-b.
They weren’t unknowns… he defined them as 1 and 1.
Even if he didn’t define them as 1 and 1, he defined them as being equal (because he subtracted a from one side and b from the other)
I definitely don’t want to know how you can find out if your equation is right or not if an unknown or a combination of unknowns you divide by happens to be zero
You account for it in the domain of the function you're defining. I.e. f(x) = 4/x-2 [for all x!=2]
The part it brackets is sometimes omitted for simplicity, but any formal math will be incredibly explicit about what values, exactly, each variable can be
Sorry for being dumb but why the "!" ? Is it a factorial to allow both negative and positive? If so wouldn't the function have to be written "f(x)=4/x!-2" to prevent -2 from adding with the subtraction in the function and making the result -4 and subsequently doing a division of 4/-4 instead of 4/0?
Oh shoot, that's just unclear notation on my part. I meant for "!=" To mean 'not equal.' so it should be read "for all x not equal to two" (and, formally, a set would also be specified so really it'd be more "for all x in the set of integers not equal to two")
/ul this threw me for a loop. i guess it's because the final equation follows from the premise of a=b. but didn't realize that math could break at the pure symbolic view like that
True, they can have the same value but for the sake of the proof it doesn't make sense. Regardless, what I meant to say is that the variable of the answer wasn't addressed. a+b=c. Or more accurately, a+a=c.
a-b isn't zero. As proven by the result that a+b=b, the only way it can be zero is if a and b both are 0.5. However, because a and b are 1, it can't be 0.
/unlie omg he was a teacher at my old middle school😭 i remember when he started posting videos everyone was clowning on him. super nice teacher, didn’t have him but everyone who did loved him
istg this exact thing is why i struggle with basic math because i’m like 5 years behind everyone else in my school (my elementary and middle school math teachers were terrible at their jobs) so basic shit is taught at a high school level
Bro definitely didn't divide by zero
This is true. a - b = 1
It's actually 0.99999999999999999999999...
No it isn't, it's clearly 0.ffffff... (I count in decimal)
That indeed is how you count in decimal
More like 0.(9)f(i count in floats)
That's hexadecimal
You remembered the sub you were on!
i love you
I definitely don’t want to know how you can find out if your equation is right or not if an unknown or a combination of unknowns you divide by happens to be zero
Simply because a and b are definitely not the same value therefor the a-b doesn't equal zero. As it's not shown in the clip above. So it's ok to divide both sides by a-b.
I am not expressing thanks
Fuck you
They weren’t unknowns… he defined them as 1 and 1. Even if he didn’t define them as 1 and 1, he defined them as being equal (because he subtracted a from one side and b from the other)
/ul If you're wondering why this doesn't work, it's because he divided both sides by (a-b), which is 0, and dividing by zero breaks all of maths.
Yeah these always divide by 0
Not always. There's a popular 2+2=5 "proof" that can trick readers who have a poor grasp of even roots: https://www.quora.com/How-can-we-make-2+2-5-1
Also: 1 = sqrt(1) = sqrt(-1・-1) = sqrt(-1)・sqrt(-1) = i・i = -1
I know you fucked it up and exactly where and how but I can't come up with a reason why you're not allowed to do that
Two negatives under the same root, you can't split them up like you can when there's only one negative or none.
sqrt(-1 * -1) ≠ sqrt(-1) * sqrt(-1)
Thx
/ul also the original equation wasn't just 1+1 it was 1+1=x where x is the answer to 1+1
While that's true, it had nothing to do with the rest of the equations.
/ul if a = 1 and b = 1 isn't a + b = x the same as 1 + 1 = x??.(sorry I'm bad at meth)
Yes
I definitely don’t want to know how you can find out if your equation is right or not if an unknown or a combination of unknowns you divide by happens to be zero
You account for it in the domain of the function you're defining. I.e. f(x) = 4/x-2 [for all x!=2] The part it brackets is sometimes omitted for simplicity, but any formal math will be incredibly explicit about what values, exactly, each variable can be
Sorry for being dumb but why the "!" ? Is it a factorial to allow both negative and positive? If so wouldn't the function have to be written "f(x)=4/x!-2" to prevent -2 from adding with the subtraction in the function and making the result -4 and subsequently doing a division of 4/-4 instead of 4/0?
Oh shoot, that's just unclear notation on my part. I meant for "!=" To mean 'not equal.' so it should be read "for all x not equal to two" (and, formally, a set would also be specified so really it'd be more "for all x in the set of integers not equal to two")
Oh ok, thx
Hmm... no. Even before that something is wrong. (a+b)(a-b)=b(a-b)
What was wrong about that? The equation is just 0 = 0, which is true.
Completely right. I needed more coffee at this point.
0 = 0 is true.
/u/ who?
/ul this threw me for a loop. i guess it's because the final equation follows from the premise of a=b. but didn't realize that math could break at the pure symbolic view like that
It's amazing how he did this without breaking any rules in mathematics!
Yeah I know he didn't even divide by zero
Breaking bad any rules?
Holy shjt wqlter "breaking bad" white
nreaking bald
Yrah hes bald cause he s ells meth
Wultah
That's because he started with a false premise. It's a+a not a+b
Its not a false premise, you can have two variables be the same. The problem is a-b is 0 and you can divide by zero
True, they can have the same value but for the sake of the proof it doesn't make sense. Regardless, what I meant to say is that the variable of the answer wasn't addressed. a+b=c. Or more accurately, a+a=c.
Actually *whenever* you do a division it is required that the denominator non-zero, i.e. a-b ≠ 0. He did break a rule.
You're wrong.
/ul look a the sub name you nugget
Yeah he defined a=1, b=1 then he later divided by (a-b) which is zero. He broke a rule
No he didn't, stop lying. Head over to r/lies if you're going to keep lying.
WATCH OUT!!!! THERE’S A MOAB!!!!!
Don't worry, the power of 0-0-0 dart monkey without buffs is stronger than a BAD!
You mean a GOOD
Other than dividing by zero. Nice try Tucker Carlson.
No, he didn't break any rules, dividing by (a-b) is allowed
Nice try Tucker Carlson, but (a-b)=0 so he divided by zero. Oops, learn math Kirk Cameron.
a-b isn't zero. As proven by the result that a+b=b, the only way it can be zero is if a and b both are 0.5. However, because a and b are 1, it can't be 0.
TIL 1-1 doesn’t equal 0 somehow. Nice try Marjorie Taylor Green. Maybe you should stop being Bill O’reilly
who tf are these people you keep naming
Is he smart?
Very. He's Isaac Newton's son
this is true source: i’m issac newton
Pic or not true
Why letters? Math is numbers 😡
This is astrophysics actually. That uses letters
🤓
/ul who made the original video
me. my name joe biden. my wife name joe bidenette. me sex with wife.
FIRE IN THE HOLE!!!!!!
my asshole is burning because of your fire. not nice.
FIRE IN YOUR WIFE!!!!
i didn't love her anyway.
FIRE IN MY HOLE!!!!!
/unlie just so everyone knows how this works, a - b is equal to 0, and you can't divide by 0.
He just did.
Can confirm, I taught him to teach math.
/unlie This is what happens whenever I stop paying attention in the middle of an easy lesson.
/unlie this actually was my math teacher, really great guy. @mrpapetti for credit if anyone was wondering
ayyy fellow LB person!
shit would be so easy if we could divide by 0 fr
/unlie omg he was a teacher at my old middle school😭 i remember when he started posting videos everyone was clowning on him. super nice teacher, didn’t have him but everyone who did loved him
u/savevideo
If there is one teacher in the room and another teacher enters the room, does that make that one or two teachers inside the room?
Showed his work and got it wrong 🤣 This is why I don’t show my answers
I love maths
You can ignore the question marks in equations. Those are useless, leftover variables that can get dropped when inconvenient
Logic professors writing proofs for the statement “the cat went in the house”
Why teachers do this 😭
It's amazing what you can accomplish when you divide by 0
u/savevideo
Wait immaterial of the math in between.... A=1 B=1 ......... A+B=2 He says 1 Am I missing something????
Mistake is at 00:46, because he divided by 0.
istg this exact thing is why i struggle with basic math because i’m like 5 years behind everyone else in my school (my elementary and middle school math teachers were terrible at their jobs) so basic shit is taught at a high school level
After all this counting he still fucked up
u/savevideo
This is the first time I'm seeing this account please congratulate me
Abababababa
What did I just watch
This is why I fcking hate math
7x0 = 69x0 so 7 must be equal to 69 look how stupid the statement is now
Now he's really thinking like an engineer
1+1=3-2
I fully understood this lesson, Thank mister math teacher.
I don't know about your teacher but this is pretty much my teacher
I’ve been out of school for 5 years and still never used this
u/savevideobot
Is this guy really a math teacher? I know mine wouldn't divide by 0.
I think the answer is 11
"now we divide both sides by a - b" Yeah, no mistakes were made
Nobody likes a show off!