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mindbleach@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

The Babylonians knew a * b = 1/4 * ( (a+b)^2 - (a-b)^2 ), and and used tables of 1/4 * x^2 to do multiplication by addition. It took three thousand years for Napier to discover modern logarithms. The slide rule was invented eight years later.

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