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nooo my genderinos
(mander.xyz)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.
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Wouldn't the square root just give plus/minus i? Seems correct enough.
No. The symbol √ signifies the principal square root of a number. Therefore, √x is always positive. The two roots of x, however, are ±√x. If you therefore have y²=x and you want to find y, you mustn't write y=√x, but rather y=±√x to be formally correct.