Comment on 🦃 happy turkey day 🦃

• TheEntity@kbin.social ⁨11⁩ ⁨months⁩ ago

  I still don't get it. Any help?

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  • MossyFeathers@pawb.social ⁨11⁩ ⁨months⁩ ago

    The square root of negative 1 is “i”. The “i” referrs to an imaginary number. When you square a number (e.g. 2^2 ) the result will always be positive. This is because you are multiplying the number with itself, and a negative number multiplied by another negative number will be positive. So -2 * -2 = 4, -3 * -3 = 9, and so on.

    A square root is the inverse of this. It attempts to find what the original number was that was squared, so sqrt(4) = 2, sqrt(9) = 3, and so on. However, what do you do if you have sqrt(-4)? There’s no way for a square to result in a negative number, so the result must be imaginary. So sqrt(-4) = 2i, sqrt(-9) = 3i, and so on. As such, sqrt(-1) = i.

    For the next part, when you divide one number by another, it is sometimes referred to as [first number] over [second number].

    8, well, sounds like “ate”.

    So sqrt(-1)/8 = i/8 = i over eight= I over ate.

    (Sorry if this came off as condescending near the end, I’m trying to be thorough in case you aren’t a native English speaker)

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    • TheEntity@kbin.social ⁨11⁩ ⁨months⁩ ago

      It seems I was only having trouble with the connecting "eight" to "ate", but damn, this is a solid explanation of the other parts too!

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    • ChaoticNeutralCzech@feddit.de ⁨11⁩ ⁨months⁩ ago

      Very thorough. I’ll just add stylization: √1̅ = 𝑖

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    • Hjalamanger@feddit.nu ⁨11⁩ ⁨months⁩ ago

      Thank you! I only got as far as i divided by 8… But now I kinda get it (-: |>

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  • Hereforpron2@lemmynsfw.com ⁨11⁩ ⁨months⁩ ago

    Square root of -1 is called i because it’s an imaginary number but a real concept used often in some fields

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    • Melkath@kbin.social ⁨11⁩ ⁨months⁩ ago

      Thanks for giving the last piece of the answer so everyone can be included, and those who didn't know can learn.

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      • Hereforpron2@lemmynsfw.com ⁨11⁩ ⁨months⁩ ago

        Just wish I could remember the spoiler formatting haha

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    • Hereforpron2@lemmynsfw.com ⁨11⁩ ⁨months⁩ ago

      Square root of -1 is called i because it’s an imaginary number but still gets used often

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  • SomeoneSomewhere@lemmy.nz ⁨11⁩ ⁨months⁩ ago

    Title

    I over-ate.

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