This is not true, it comes from Arabian scientists,they called unknown things as 'şey' , since latins couldn't pronounce it they read as 'kai', then the europians couldnt pronounce this, they read as 'xai', so it becomes x as today known.Precise information!
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Why is 'x' the unknown?https://www.ted.com/talks/terry_moore_why_is_x_the_unknown …
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Though, as I understand it, it was the printer of La Geometrie that suggested using x, rather than z, as the first unknown, because x was under-used in French text so would stand out as unusual.
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Yes but more used than english tbh.
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Here is a quotation from Descartes that I like: "We ought never to allow ourselves to be persuaded of the truth of anything unless on the evidence of our reason."
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good idea, it might stick
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He also tortured dogs, if I remember correctly. So there's that.
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I love this. Studied a bit of Descartes in college. Wish I was good at math. But this, even my muddled head can understand!
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Letters in the middle.
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Cool bit of math history! And the Fortran folks are the reason we use i, j, k as index (counter) variables.
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Fairly certain this is a convention from math that predates fortran :).
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