I once tried to start a conversation with a girl at a party, but she immediately said she had a boyfriend and pointed at him.
So I had a great, long talk with her boyfriend the whole evening, drinking beers, making jokes and laughing hysterically, while the girl stood in the corner by herself with a glass of water, looking pissed, car keys dangling from her finger.
CustardFist would literally never make up anything! Look at their profile! They meticulously document every aspect of their real actual life in comic form!
In mathematics, a square root of a number x is a number y such that y² = x; in other words, a number y whose square (the result of multiplying the number by itself, or y ⋅ y) is x. For example, 4 and −4 are square roots of 16 because 4² = ( − 4 )² = 16.
Edit: I'm wrong lol, there is a difference between the square root function, which accepts two results, and the square root, or principal square root, which is a unique positive number
So close yet so far. If only you had read ONE more paragraph.
Every nonnegative real number x has a unique nonnegative square root, called the principal square root or simply the square root (with a definite article, see below), which is denoted by √x where the symbol "√" is called the radical sign or radix.
This sentence made no sense to me as it directly contradicted the previous one. But it's just a confusion on my part between the function called square root, which confusingly outputs two different numbers called "square roots", and "the" number called square root; I've edited my comment. Thanks for correcting me!
Yeah, I see how that can happen. Very confusing to have the same name for two things differentiated only by the use of a definite or indefinite article.
You can get the sqrt of a given y by looking at the x axis. E.g. the value of y=4 has two solutions, x=2 and x=-2. This however does not mean that the sqrt of -4 is also 2! If you look at graph you can see that there are no solutions for y less than 0.
sqrt(-1) , sqrt(-2) (i ill omit imaginary numbers here) and so on do not have a solution. There is nothing you can replace with such that x × x is < 0 because multiplying two negatives always nets a positive.
A stranger asked me for the time a few weeks ago and I realised it was the first time in 10+ years. It just doesn't happen anymore. Another thing ruined by millennials
25 Comments
CustardFist@feddit.nl · 58 pts · 1y
I once tried to start a conversation with a girl at a party, but she immediately said she had a boyfriend and pointed at him.
So I had a great, long talk with her boyfriend the whole evening, drinking beers, making jokes and laughing hysterically, while the girl stood in the corner by herself with a glass of water, looking pissed, car keys dangling from her finger.
What a great night. 😄
LiPoly@lemmynsfw.com · 21 pts · 1y
I’m going to go with “what is a story that started out real but you made up the end in your head on your way home?”
Maven@lemmy.zip · 2 pts · 1y
CustardFist would literally never make up anything! Look at their profile! They meticulously document every aspect of their real actual life in comic form!
Grandwolf319@sh.itjust.works · 31 pts · 1y
It’s 6 and -6
ezdrift@lemm.ee · 23 pts · 1y
It's only 6.
TechieDamien@lemmy.ml · 32 pts · 1y
Don't know why you are being down voted. You are correct. There is a difference between a square root and the solutions of x^2^ = n.
Acters@lemmy.world · 12 pts · 1y
Yeah, square root implies absolute numbers. You need to manually multiply by -1 to get the other solution to x^2
CommanderCloon@lemmy.ml · 7 pts · 1y
No?
Wikipedia
Edit: I'm wrong lol, there is a difference between the square root function, which accepts two results, and the square root, or principal square root, which is a unique positive number
Opisek@lemmy.world · 25 pts · 1y
So close yet so far. If only you had read ONE more paragraph.
CommanderCloon@lemmy.ml · 2 pts · 1y
This sentence made no sense to me as it directly contradicted the previous one. But it's just a confusion on my part between the function called square root, which confusingly outputs two different numbers called "square roots", and "the" number called square root; I've edited my comment. Thanks for correcting me!
Opisek@lemmy.world · 2 pts · 1y
Yeah, I see how that can happen. Very confusing to have the same name for two things differentiated only by the use of a definite or indefinite article.
wdx@feddit.org · 2 pts · 1y
Look at the inverse of the square root function, f(x)=x² (https://www.desmos.com/calculator/2v5gzbhru8)
You can get the sqrt of a given y by looking at the x axis. E.g. the value of y=4 has two solutions, x=2 and x=-2. This however does not mean that the sqrt of -4 is also 2! If you look at graph you can see that there are no solutions for y less than 0.
sqrt(-1) , sqrt(-2) (i ill omit imaginary numbers here) and so on do not have a solution. There is nothing you can replace with such that x × x is < 0 because multiplying two negatives always nets a positive.
DragonTypeWyvern@midwest.social · 1 pts · 1y
I really don't like the sqrt shorthand.
They knew.
Cephalotrocity@biglemmowski.win · 6 pts · 1y
or
GJdan@programming.dev · 16 pts · 1y
It's simultaneously 6 and -6 until you open the box
DragonTypeWyvern@midwest.social · 1 pts · 1y
Superposition isn't the same thing as a simultaneous existence. There are not two cats in the box.
lurklurk@lemmy.world · 3 pts · 1y
Because we don't want kittens?
GiveOver@feddit.uk · 30 pts · 1y
A stranger asked me for the time a few weeks ago and I realised it was the first time in 10+ years. It just doesn't happen anymore. Another thing ruined by millennials
BlueMagma@sh.itjust.works · 5 pts · 1y
Why is it millennials that "ruined" it in your opinion ? I assumed it disappeared because everybody has mobile phone with a clock on it.
rickyrigatoni@lemm.ee · 8 pts · 1y
Millenials destroyed the spacetime continuum in 2168 after trying to make a fidget spinner out of black holes.
DragonTypeWyvern@midwest.social · 2 pts · 1y
Would
GiveOver@feddit.uk · 3 pts · 1y
Yeah it's definitely due to phones, I was only joking about millenials. Seems like something the news would say.
redisdead@lemmy.world · 8 pts · 1y
I was at a cafe enjoying a beer with my mates when some girls came and took about 5 minutes to park and just gave up halfway through.
I saw the police walk down the street so I turned to them and tried to get their attention. I got the 'I have a boyfriend ' thing
I wonder if her boyfriend paid for the parking ticket.
chonglibloodsport@lemmy.world · 6 pts · 1y
Why is the college calc prof calling on Becky for a trivial square root?
Acters@lemmy.world · 6 pts · 1y
Becky: "I have a boyfriend"