Science Memes

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Conversing with Mathematicians (mander.xyz)

submitted 3 months ago by [email protected] to c/[email protected]

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[–] [email protected] 21 points 3 months ago (4 children)

x has to be -10, right? Or am I missing something?

[–] [email protected] 4 points 3 months ago

Depends on what are the allowed values for x are. Real numbers, complexe numbers, binary or I made up my own numbers ;)

[–] [email protected] 4 points 3 months ago

The answer in the meme (10i^2) is -10

[–] [email protected] 3 points 3 months ago (1 children)

Probably what they were going for, but there are literally an infinite number of exotic arithmetic spaces you could ask this question in. For example, x=10 works in any ring with a modulus greater than 100 and less than 1000.

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

fortunately math problems are administered in the context of the class, so it will be pretty obvious that it's in the complex plane.

[–] [email protected] 7 points 3 months ago (2 children)

Yeah, I think the point is that the person answering was wrong/over complicating. If x=10i, then x^2 would be -100 (or potentially -10 depending on what you think the ^2 is applied to).

[–] [email protected] 5 points 3 months ago

They're correct, it's just overcomplicated as fuck in ways that are correct but completely irrelevant to the question.

[–] [email protected] 22 points 3 months ago

They said x=10i^2, not 10i. Difference is it equals -10, and they chose not to simplify.