👉 In mathematics, a quadriderivative is a special kind of derivative that arises in the context of partial differential equations and integral transforms. It is defined as follows: Given a function f(x) on an interval [a,b], then the quadriderivative of f(x), denoted by Df(x), is defined as: Df(x) = ∂f/∂x + 2 ∂f/∂y + 3 ∂f/∂z + ... + n
