Definition: Unilinear refers to a mathematical concept or phenomenon that is independent of, or not dependent on, another variable. For example, if you have a function f(x) = x^2 and you want to find the value of x when y = 3, then you can solve this problem by substituting y with 3 in the equation for f(x). This means that the input (y-value) is not dependent on the output (x-value), which makes the function unilinear.
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