Exam-style question
Try this first
Which statement shows sound numerical methods reasoning for numerical integration of functions?.
- A.I3: check notation, restrictions and final form
- B.Use any familiar GCSE calculation even if it ignores numerical integration of functions
- C.Write only the final answer without showing the mathematical method
- D.Change the notation or restrictions to make the algebra look simpler
Model answer
What a good answer should say
- The correct answer is I3: check notation, restrictions and final form.
- This option is best because select the integration method and interpret constants, limits or area meaning, then checks that the notation, restrictions and conclusion match the AQA A-level Mathematics objective.
This answer is tied to the objective: I3 Understand and use numerical integration of functions, including the trapezium rule and estimating the approximate area under a curve and limits that it must lie between..
Explanation
Why this works
Use the explanation to connect the worked answer back to I3 Understand and use numerical integration of functions, including the trapezium rule and estimating the approximate area under a curve and limits that it must lie between..
I3: check notation, restrictions and final form is the correct option. It directly supports numerical integration of functions by requiring the student to select the integration method and interpret constants, limits or area meaning.
The other options are weaker because they hide the reasoning, ignore restrictions, or use a generic calculation that may not fit the objective.
Maths method check
- Topic focus: Pure Mathematics.
- Question style: practice.
- Reasoning demand: application.
- Check the operation, notation, units, and final answer form against the question before moving on.
Common mistake
No common mistake is linked to this question yet.