Exponential function, real

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The function $y=e^x$, also denoted by $y=\exp x$. Sometimes the function $y=a^x$ for any base $a>0$ is also called an exponential function.


See also Exponential function; Exponent; $e$ (number). The inverse of the exponential function is the logarithmic function (cf. also Logarithm of a number). The value of the exponential function at a point is also called the antilogarithm of this point.

How to Cite This Entry:
Exponential function, real. Encyclopedia of Mathematics. URL:,_real&oldid=31586
This article was adapted from an original article by BSE-3 (originator), which appeared in Encyclopedia of Mathematics - ISBN 1402006098. See original article