If logarithms seem like Greek to you, this interactive algebra 2 lesson will help you sort things out. We can use many bases for a logarithm, but the bases most typically used are the bases of the common logarithm and the natural logarithm. The common logarithm has base 10, and is represented on the calculator as log(x). The natural logarithm has base e, a famous irrational number, and is represented on the calculator by ln(x). The natural and common logarithm can be found throughout Algebra and Calculus.

What Are Natural and Common Logarithms?


This video is courtesy of Bill White (YouTube)

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APA style
What Are Natural and Common Logarithms?. (2013, March 2). In ClassBrain Math Tutorials. Retrieved 09:13, September 22, 2017, from http://www.classbrainmath.com/natural-and-common-logarithms/
MLA style
Cynthia Kirkeby, “What Are Natural and Common Logarithms?.” ClassBrain Math Tutorials. 2 March 2013, 11:02 UTC. . 22 Sep 2017 <http://www.classbrainmath.com/natural-and-common-logarithms/>.
MHRA style
Cynthia Kirkeby, 'What Are Natural and Common Logarithms?', ClassBrain Math Tutorials, 2 March 2013, 11:02 UTC, <http://www.classbrainmath.com/natural-and-common-logarithms/> [accessed 22 September 2017]
The Chicago Manual of Style
Cynthia Kirkeby, “What Are Natural and Common Logarithms?.” ClassBrain Math Tutorials, http://www.classbrainmath.com/natural-and-common-logarithms/ [accessed September 22, 2017].
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Cynthia Kirkeby, What Are Natural and Common Logarithms? [Internet]. ClassBrain Math Tutorials; 2013 March 2, 11:02 UTC [cited 2017 Sep 22]. Available from: http://www.classbrainmath.com/natural-and-common-logarithms/.
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What Are Natural and Common Logarithms?, http://www.classbrainmath.com/natural-and-common-logarithms/ (last visited Sep. 22, 2017).
AMA style
Cynthia Kirkeby, What Are Natural and Common Logarithms?. ClassBrain Math Tutorials. March 2, 2013, 11:02 UTC. Available at: http://www.classbrainmath.com/natural-and-common-logarithms/. Accessed September 22, 2017.