Definition:Exponential Function

Definition
The exponential function is denoted $\exp$ and can be defined in several ways, as described below.

For all definitions of the real exponential function:


 * The domain of $\exp$ is $\R$


 * The codomain of $\exp$ is $\R_{>0}$

For $x \in \R$, the real number $\exp x$ is called the exponential of $x$.

Equivalence of Definitions
As shown in Equivalence of Definitions of Exponential Function, the definitions above are equivalent.

Also see

 * Properties of Exponential Function