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If I hear "% is a mathematical operator" one more time... (mander.xyz)
submitted 9 months ago by to c/science_memes@mander.xyz
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[–] 0 points 9 months ago* (last edited 9 months ago) (2 children)

Square root is an operator that maps a number to the positive number that when squared returns the original number

Nah, dog. You're arbitrarily ignoring negatives. The square root of 4 is ±2.

Nah, dog. I'm wrong

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  • [–] 8 points 9 months ago* (last edited 9 months ago) (1 child)

    I assume you're nerd baiting* with that, but it's infuriating how many math teachers actually teach that.

    It's not that complicated. x² = n isn't the same thing as x = √2 because then square rooting isn't a function, which is asinine. (Similarly to why 0! isn't defined to be 0, because otherwise it's a stupid notation that would need a piecewise function definition for just about every single application of the factorial function.)

    *link to xkcd: Duty Calls

    Edit: my phone autocorrected "isn't" to "is", lol.

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