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In mathematics, a function in which a constant base is raised to a variable power. Exponential functions are used to model changes in population size, in the spread of diseases, and in the growth of investments. They can also accurately predict types of decline typified by radioactive decay (*see* half-life). The essence of exponential growth, and a characteristic of all exponential growth functions, is that they double in size over regular intervals. The most important exponential function is *math.e*^{math.x}, the inverse of the natural logarithmic function (*see* logarithm).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.

Exponential may refer to any of several mathematical topics related to exponentiation, including:## See also

## References

- Exponential function, also:
- Matrix exponential, the matrix analogue to the above
- Exponential decay
- Exponential growth
- Exponential map, in differential geometry
- Exponential notation, also known as scientific notation, or standard form
- Exponential object, in category theory
- Exponential time, in complexity theory
- in probability and statistics:
- Topics listed at list of exponential topics

Exponential may also refer to:

- Exponential (Online Advertiser)
- Parent company of Tribal Fusion, FullTango, LeadGenuity and EchoTopic
- Exponential (record label)
- Exponential Technology

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Last updated on Wednesday October 08, 2008 at 11:34:34 PDT (GMT -0700)

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This article is licensed under the GNU Free Documentation License.

Last updated on Wednesday October 08, 2008 at 11:34:34 PDT (GMT -0700)

View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation

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