General Leibniz rule - Wikipedia
https://en.wikipedia.org/wiki/General_Leibniz_ruleIn calculus, the general Leibniz rule, named after Gottfried Wilhelm Leibniz, generalizes the product rule (which is also known as "Leibniz's rule"). It states that if and are -times differentiable functions, then the product is also -times differentiable and its th derivative is given by where is the binomial coefficient and denotes the jth derivative of f (and in particular ). The rule can be proved by using the product rule and mathematical induction.
nth Derivative | Superprof
www.superprof.co.uk › nth-derivativenth Derivative. Taking the derivatives of the function n number of times is known as nth derivative of the function. A general formula for all of the successive derivatives exists. This formula is called the nth derivative, f' n (x). It can be denoted as: