logarithm

Noun.  (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.

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This entry was last updated on RefTopia from its source on 3/20/2012.