chain rule

American  

noun

Mathematics.

1. the theorem that defines the method for taking the derivative of a composite function.

---

chain rule British  

noun

1. maths a theorem that may be used in the differentiation of the function of a function. It states that d u /d x = (d u /d y )(d y /d x ), where y is a function of x and u a function of y

---

Etymology

Origin of chain rule

First recorded in 1860–65

Example Sentences

See Examples For:

chain rule

It is not absolutely necessary to memorize these as separate formulas as they are all applications of the chain rule to previously learned formulas.

From Textbooks ● Mar. 30, 2016

Use a tree diagram and the chain rule to find an expression for ∂ u.

From Textbooks ● Mar. 30, 2016

There is an important difference between these two chain rule theorems.

From Textbooks ● Mar. 30, 2016

The same thing is true for multivariable calculus, but this time we have to deal with more than one form of the chain rule.

From Textbooks ● Mar. 30, 2016

This proves the chain rule at t = t0; the rest of the theorem follows from the assumption that all functions are differentiable over their entire domains.

From Textbooks ● Mar. 30, 2016