Edexcel A Level Maths: Pure:復習筆記7.3.5 Quotient Rule
Quotient Rule
What is the quotient rule?
- The quotient rule is a formula that allows you to differentiate a?quotient of two functions?(ie one function divided by another)
- If
?where?u?and?v?are functions of?x?then the quotient rule is:
- In?function notation,?if
?then the quotient rule can be written as:
Exam Tip
- The quotient rule formula is in the formulae booklet – you don't have to memorise it.
- Be careful using the formula – because of the minus sign in the numerator the order of the functions is important.
- Look out for functions of the form
- You could differentiate that using a combination of the?chain rule?and the?product rule?(and it can be good practice for you to try it!)
- But it can also be seen as just a quotient rule question in disguise
-
Worked Example
轉載自savemyexams
翰林AMC8視頻課重磅上線！
國際競賽真題資源免費領取
