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submitted 7 months ago by Zpk1a@lemmy.world to c/comicstrips@lemmy.world

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[-] CustardFist@feddit.nl 58 points 7 months ago

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. 😄

[-] Grandwolf319@sh.itjust.works 38 points 7 months ago

It’s 6 and -6

[-] ezdrift@lemm.ee 27 points 7 months ago

It's only 6.

[-] TechieDamien@lemmy.ml 31 points 7 months ago

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.

[-] CommanderCloon@lemmy.ml 12 points 7 months ago

No?

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.

Wikipedia

[-] Opisek@lemmy.world 25 points 7 months ago* (last edited 7 months ago)

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.

[-] CommanderCloon@lemmy.ml 1 points 7 months ago* (last edited 7 months ago)

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 1 points 7 months 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.

[-] wdx@feddit.org 1 points 7 months ago* (last edited 7 months ago)

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.

[-] Acters@lemmy.world 10 points 7 months ago

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

[-] GiveOver@feddit.uk 36 points 7 months ago

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 4 points 7 months ago

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

[-] GiveOver@feddit.uk 2 points 7 months ago

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

this post was submitted on 08 Dec 2024

276 points (100.0% liked)

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