Logarithm

Definitions

For a number x, the exponent by which a given base number must be raised in order to obtain the power x. Written log _bx. For example, log ₁₀1000=3 because 10³=1000 and log ₂16=4 because 2⁴=16.

Equivalents

Examples

“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.”

CEFR level