Univariate
Involving one variable, as opposed to two (bivariate) or many (multivariate).
See also
Bivariate, Multivariate, Univariate Function, Univariate Polynomial, VariateExplore with Wolfram|Alpha
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Cite this as:
Weisstein, Eric W. "Univariate." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Univariate.html