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Conversing with Mathematicians (mander.xyz)

submitted 3 months ago by fossilesque@mander.xyz to c/science_memes@mander.xyz

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[-] JackbyDev@programming.dev 15 points 3 months ago

The squareroot of 100 is ±10.

[-] OozingPositron@feddit.cl -2 points 3 months ago

The square root is always positive, but you can plug it into the quadratic formula to get the two possible values.

[-] JackbyDev@programming.dev 17 points 3 months ago

Okay, fine the square roots of 100 are ±10.

[-] Eheran@lemmy.world 1 points 3 months ago

Seems very inaccurate the we can only determine the square root to +-10.

[-] sevenapples@lemmygrad.ml -1 points 3 months ago

That's not how the square root is defined.

You're confusing "square root of 100" with "the answer to x^2 = 100". These are different things.

[-] JackbyDev@programming.dev 3 points 3 months ago

Which is why I differentiated between square roots and the principle square root by saying the square roots instead of the square root on the second comment.

[-] sevenapples@lemmygrad.ml -1 points 3 months ago

so you came up with your own term to cover your mistake?

[-] JackbyDev@programming.dev 2 points 3 months ago

No, I was being pedantic to appease the pedantic assholes.

[-] Dalvoron@lemm.ee 2 points 3 months ago

Nope, everything they said is well established and correct

[-] sevenapples@lemmygrad.ml 1 points 3 months ago

Oops, my bad

[-] ShrimpCurler@lemmy.dbzer0.com 7 points 3 months ago

There's no reason to bring the quadratic formula into this. Square roots can be negative, but when talking about the square root it's normally assumed to be the principal square root, which is the positive one.