Exponential: Difference between revisions
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# ''Maths.'' The exponential constant is a mathematical constant with a value of roughly 2.718, usually designated by the letter ''e''. | |||
The exponential constant is a mathematical constant with a value of roughly 2.718, usually designated by the letter ''e''. | # ''Maths.'' The related exponential function is ''e''<sup>x</sup> (''e'' to the power of x). The exponential function in Excel is =EXP( ). The exponential function is the inverse of the natural logarithm. | ||
#''Statistics.'' Exponential growth means growth other than straight-line. For example the series 100, 200, 400... is growing exponentially. | |||
# ''Statistics.'' Exponential decay means the reduction in a variable, for example over time, on a basis other than straight-line. For example the reduction in the time value of an option, as its remaining time to maturity expires. | |||
The related exponential function is ''e''<sup>x</sup> (''e'' to the power of x). | |||
The exponential function in Excel is =EXP( ). The exponential function is the inverse of the natural logarithm. | |||
Exponential growth means growth other than straight-line. | |||
For example the series 100, 200, 400... is growing exponentially. | |||
Exponential decay means the reduction in a variable, for example over time, on a basis other than straight-line. | |||
For example the reduction in the time value of an option, as its remaining time to maturity expires. | |||
== See also == | == See also == | ||
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* [[Natural logarithm]] | * [[Natural logarithm]] | ||
* [[Time value]] | * [[Time value]] | ||
Revision as of 21:28, 13 August 2013
- Maths. The exponential constant is a mathematical constant with a value of roughly 2.718, usually designated by the letter e.
- Maths. The related exponential function is ex (e to the power of x). The exponential function in Excel is =EXP( ). The exponential function is the inverse of the natural logarithm.
- Statistics. Exponential growth means growth other than straight-line. For example the series 100, 200, 400... is growing exponentially.
- Statistics. Exponential decay means the reduction in a variable, for example over time, on a basis other than straight-line. For example the reduction in the time value of an option, as its remaining time to maturity expires.