👉 In mathematics, a postdetermined function is a mathematical object that has no independent variable and therefore cannot be determined by its input. In other words, it's an element of some set of functions that doesn't depend on any particular inputs. For example, in calculus, the derivative of a function f(x) = x^2 is defined as f'(x) = 2x. This equation holds true for all values of x except when x=0, because if we substitute 0
