chain rule

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

Origin:
1860–65

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chain rule
 
n
maths a theorem that may be used in the differentiation of the function of a function. It states that du/dx = (du/dy)(dy/dx), where y is a function of x and u a function of y

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Example sentences
In these figures, the seed values for the refinement process are obtained by the chain rule method.
The iterative algorithm to adjust the weights is an application of the chain rule of calculus.
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