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Results tagged with euler
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What was Euler's motivation for introducing $i$ for $\sqrt{-1}$?
It was Euler who first used the letter $i$ for $\sqrt{-1}$. He gave it in a memoir presented in 1777 to the Academy at St. … Petersburg, and entitled "De formulis differentialibus etc.," but it was not published until 1794 after the death of Euler. …
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