Exponential function and Single-valued function

Exponential function noun - A function in which an independent variable appears as an exponent.

Single-valued function and exponential function are semantically related. In some cases you can use "Single-valued function" instead a noun phrase "Exponential function".

Single-valued function noun - Mathematics) a mathematical relation such that each element of a given set (the domain of the function) is associated with an element of another set (the range of the function.

Exponential function and single-valued function are semantically related. Sometimes you can replace phrase "Exponential function" with "Single-valued function", this phrases are similar.