Euler's formula

noun

Mathematics. the theorem that eix = cosx + isinx.
Mechanics. a formula for determining the maximum load that can be applied to a given column without causing it to buckle.

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"The Handmaid's Tale" was required reading for many of us in school. Everyone else has probably watched the very popular and addictive TV show. Do you remember this vocabulary from the book, and do you know what these terms mean?
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decorum
the act of or need for making up one's mind.
dignified propriety of behavior, speech, dress, etc.
a company of singers, especially an organized group employed in church service.
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Origin of Euler's formula

First recorded in 1945–50; named after L. Euler
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020