Why does the product rule work?
Visualizing the chain rule and product rule | Chapter 4, Essence of calculus
Product Rule Part 2: Why it Works
Product Rule For Derivatives
Product rule proof | Taking derivatives | Differential Calculus | Khan Academy
The Product Rule
General Product Rule
Product rule in 60seconds
HOW TO CHOOSE CHAIN RULE vs. PRODUCT RULE | Calculus Derivatives
Differentiation: Product rule
Proving Product Rule
Product Rule (1 of 2: It's Complicated...)
Product Rule - Definition
Simple trick for doing implicit differentiation!
Product Rule for Counting - Corbettmaths
Proof of The Product Rule
Where does the Product Rule come from? (2 of 2: Derivation)
Proof of the Product Rule from Calculus
