product rule
product rule, Rule for finding the derivative of a product of two functions. If both f and g are differentiable, then (fg)β² = fgβ² + fβ²g.
This article was most recently revised and updated by William L. Hosch.
Citation Information
Article Title:
product rule
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
25 November 2024
Access Date:
November 14, 2026