chain rule


Definition of chain rule

  1. :  a mathematical rule concerning the differentiation of a function of a function (such as f [u(x)]) by which under suitable conditions of continuity and differentiability one function is differentiated with respect to the second function considered as an independent variable and then the second function is differentiated with respect to its independent variable

Circa 1937

First Known Use of chain rule

circa 1937

Seen and Heard

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a trip made at another's expense

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