Do we have
- $\exp:\mathbb R \rightarrow \mathbb R$; or
- $\exp:\mathbb R \rightarrow \mathbb R^+$?
Option 1 seems to be common but seems to have the problem that $\exp$ wouldn't be the inverse of $\ln:\mathbb R^+ \rightarrow \mathbb R $ ?
2026-04-08 05:05:03.1775624703
What is the codomain of the exponential function?
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The codomain may be any set that contains the positive real numbers. The range of course is the set of all positive reals, provided the domain is restricted to only the real numbers.