Implicit function

An implicit function is a function that is defined implicitly rather than explicitly. In other words, it is not given in the form \( y = f(x) \). Instead, an implicit function is defined by an equation that relates the variables \( x \) and \( y \) through an equation of the form \( F(x, y) = 0 \), where \( F \) is a function of both \( x \) and \( y \).