Half-exponential function: Difference between revisions

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Importing Wikidata short description: "Function that results in an exponential function when composed"
Changing short description from "Function that results in an exponential function when composed" to "Function that results in an exponential function when composed with itself"
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{{Short description|Function that results in an exponential function when composed with itself}}
In [[mathematics]], a '''half-exponential function''' is a [[functional square root]] of an [[exponential function]]. That is, a [[function (mathematics)|function]] <math>f</math> such that <math>f</math> [[function composition|composed]] with itself results in an exponential function:{{r|sqrtexp|miltersen}}
<math display=block>f\bigl(f(x)\bigr) = ab^x,</math>