Level 3 Differentiation Walkthrough
2020 NCEA Level 3 Differentiation Question 2(c)
2020 Paper
Walkthrough overview
What this question practises
This 2020 walkthrough is part of AS91578 — Apply differentiation methods in solving problems.
Method: Product and chain rules for stationary points.
This is Question 2(c) from the 2020 NCEA Level 3 Differentiation paper for AS91578 — Apply differentiation methods in solving problems. Use the guided hints to practise the method before revealing the full working.
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Learning summary
Review the method, not only the answer
This walkthrough helps you practise product and chain rules for stationary points. Use the hints to plan the method, then repeat the question without hints and check each step.
Common mistake to avoid
Do not stop after differentiating the outside function; include the derivative of the inside function as a factor.
Continue practising
- All 2020 Differentiation walkthroughs
- All AS91578 Differentiation years
- Practise more questions using this skill: Chain rule, Product and quotient rules, Stationary points and optimisation