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