zeroderivative
Zeroderivative is a term used in mathematics to describe a function whose derivative is identically zero on its domain. In other words, if a function f is differentiable on a set and f'(x) = 0 for every point in that set, then f is said to have a zeroderivative on that domain.
A fundamental consequence is that on any interval where the function is differentiable and its derivative
The concept is not universal terminology; in many contexts a function with zeroderivative is simply described
Examples of zeroderivative functions include any constant function, such as f(x) = c, or the zero function