An unknown is an independent variable of a function. A function with independent variables is said to be a function "in,"
"with," or "of"
unknowns.
Unknown
See also
Indeterminate, VariableThis entry contributed by Breckin Loggins
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Cite this as:
Weisstein, Eric W., with contributions by Breckin Loggins. "Unknown." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Unknown.html