CIE A Level Maths: Pure 3复习笔记4.1.2 Product Rule
Product Rule
What is the product rule?
- The product rule is a formula that allows you to differentiate a product of two functions
Exam Tip
- The product rule formulae are in the formulae booklet – make sure you know how to find them.
- Don't confuse the product of two functions with a composite function:
- The product of two functions is two functions multiplied together
- A composite function is a function of a function
- To differentiate composite functions you need to use the chain rule
Worked Example
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