this post was submitted on 08 Dec 2024
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[–] [email protected] 58 points 2 weeks ago (1 children)

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. πŸ˜„

[–] [email protected] 21 points 1 week ago (1 children)

I’m going to go with β€œwhat is a story that started out real but you made up the end in your head on your way home?”

[–] [email protected] 2 points 1 week ago

CustardFist would literally never make up anything! Look at their profile! They meticulously document every aspect of their real actual life in comic form!

[–] [email protected] 31 points 2 weeks ago (2 children)
[–] [email protected] 23 points 2 weeks ago (1 children)
[–] [email protected] 32 points 2 weeks ago (2 children)

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.

[–] [email protected] 12 points 2 weeks ago

Yeah, square root implies absolute numbers. You need to manually multiply by -1 to get the other solution to x^2

[–] [email protected] 7 points 2 weeks ago* (last edited 1 week ago) (2 children)

No?

In mathematics, a square root of a number x is a number y such that yΒ² = x; in other words, a number y whose square (the result of multiplying the number by itself, or y β‹… y) is x. For example, 4 and βˆ’4 are square roots of 16 because 4Β² = ( βˆ’ 4 )Β² = 16.

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

[–] [email protected] 25 points 2 weeks ago* (last edited 2 weeks ago) (1 children)

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.

[–] [email protected] 2 points 1 week ago* (last edited 1 week ago) (1 children)

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!

[–] [email protected] 2 points 1 week ago

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.

[–] [email protected] 2 points 1 week ago* (last edited 1 week ago) (1 children)

Look at the inverse of the square root function, f(x)=xΒ² (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 Γ— x is < 0 because multiplying two negatives always nets a positive.

[–] [email protected] 1 points 1 week ago

I really don't like the sqrt shorthand.

They knew.

[–] [email protected] 6 points 2 weeks ago (1 children)
[–] GJdan 16 points 2 weeks ago (1 children)

It's simultaneously 6 and -6 until you open the box

[–] [email protected] 1 points 1 week ago (1 children)

Superposition isn't the same thing as a simultaneous existence. There are not two cats in the box.

[–] [email protected] 3 points 1 week ago

Because we don't want kittens?

[–] [email protected] 30 points 2 weeks ago (1 children)

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

[–] [email protected] 5 points 1 week ago (2 children)

Why is it millennials that "ruined" it in your opinion ? I assumed it disappeared because everybody has mobile phone with a clock on it.

[–] [email protected] 8 points 1 week ago (1 children)

Millenials destroyed the spacetime continuum in 2168 after trying to make a fidget spinner out of black holes.

[–] [email protected] 3 points 1 week ago

Yeah it's definitely due to phones, I was only joking about millenials. Seems like something the news would say.