Logarithm: Difference between revisions
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1. | 1. | ||
The mathematical function which is the inverse of "raising to the power of". | The mathematical function which is the inverse of "raising to the power of". | ||
Usually abbreviated to | Usually abbreviated to "log". | ||
For example working with logarithms to the base 10: | For example working with logarithms to the base 10: | ||
log<sub>10</sub>(100) = 2 | log<sub>10</sub>(100) = 2 | ||
And 10<sup>2</sup> = 100 | And 10<sup>2</sup> = 100 | ||
More generally with logarithms to the base n: | More generally with logarithms to the base n: | ||
log<sub>n</sub>(x) = the power which, when 'n' is raised to it = x | log<sub>n</sub>(x) = the power which, when 'n' is raised to it = x | ||
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And generally n<sup>(log<sub>n</sub>(x))</sup> = x | And generally n<sup>(log<sub>n</sub>(x))</sup> = x | ||
2. | 2. | ||
The logarithm to the base 10. | The logarithm to the base 10. | ||
== See also == | |||
* [[Natural logarithm]] | |||
Revision as of 16:49, 19 December 2012
1. The mathematical function which is the inverse of "raising to the power of". Usually abbreviated to "log".
For example working with logarithms to the base 10:
log10(100) = 2
And 102 = 100
More generally with logarithms to the base n:
logn(x) = the power which, when 'n' is raised to it = x
For example 10(log10(x)) = x
And generally n(logn(x)) = x
2.
The logarithm to the base 10.
