👉 In mathematics, a renigged function is a special type of function that has been reneged by its original value. A renigged function is defined as follows: Let \( f \) be a function from a set \( X \) to a set \( Y \), and let \( f(x) = y \) for some element \( x \in X \). Then, the renigged function of \( f \) is given by \[ f'(x) =