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natural logarithm
noun
, Mathematics.
- a logarithm having e as a base. : ln
natural logarithm
noun
- a logarithm to the base e. Usually written log e or ln Also calledNapierian logarithm Compare e common logarithm
natural logarithm
- A logarithm using base e. Natural logarithms are common in mathematics, especially in cases involving complex numbers. They are also called Napierian logarithms , after their inventor, English mathematician John Napier (1550–1617).
- See more at eCompare common logarithm
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Word History and Origins
Origin of natural logarithm1
First recorded in 1810–20
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Example Sentences
We can see this in FiveThirtyEight’s urbanization index, which captures how urban or rural an area is by calculating the natural logarithm of the average number of people living within a five-mile radius of another resident.
From FiveThirtyEight
To figure out a dog’s biological age, they say, multiply the natural logarithm of the dog’s age in years by 16.
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