# Exponential function, real

From Encyclopedia of Mathematics

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.

#### Comments

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: http://www.encyclopediaofmath.org/index.php?title=Exponential_function,_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