logarithm

EnglishEdit

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PronunciationEdit

  • (US) IPA(key): /ˈlɑ.gə.ɹɪ.ð(ə)m/

EtymologyEdit

From New Latin logarithmus, term coined by Scot mathematician John Napier from Ancient Greek λόγος (logos, word, reason) and ἀριθμός (arithmos, number).

NounEdit

logarithm (plural logarithms)

  1. (mathematics) For a number x, the power to which a given base number must be raised in order to obtain x. Written \log_b x. For example, \log_{10} 1000 = 3 because 10^3 = 1000 and \log_2 16 = 4 because 2^4 = 16.
    For a currency which uses denominations of 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, etc., each jump in the base-10 logarithm from one denomination to the next higher is either 0.3010 or 0.3979.

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Last modified on 16 April 2014, at 19:43