Level 3 Differentiation Walkthrough
2019 NCEA Level 3 Differentiation Question 1(d)
2019 Paper
Walkthrough overview
What this question practises
This 2019 walkthrough is part of AS91578 — Apply differentiation methods in solving problems.
Method: Product rule and finding where a function is decreasing.
This is Question 1(d) from the 2019 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 rule and finding where a function is decreasing. Use the hints to plan the method, then repeat the question without hints and check each step.
Common mistake to avoid
Differentiate both factors in turn and keep both product-rule terms.
Continue practising
- All 2019 Differentiation walkthroughs
- All AS91578 Differentiation years
- Practise more questions using this skill: Product and quotient rules