A function of a single variable (e.g., , , , etc.).
Univariate Function
See also
Multivariate Function, Univariate PolynomialExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Univariate Function." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/UnivariateFunction.html