Mathematics A-Level
closed formula
What closed formula means in Mathematics A-Level, as defined for AQA.
Definition of closed formula
Check what you remember
Read the wording for your board, then hide it and explain closed formula in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A formula for the nth term that allows terms to be generated by substituting consecutive positive integers for n.
Topics that use closed formula
- D: Sequences and series (AQA A-Level)
Related terms
- Arithmetic sequence
- common difference
- Convergence and limiting sums
- Convergent geometric series
- Distinguishing between arithmetic and geometric change
- Geometric sequence
- Interpreting and evaluating mathematical models
- Lower limit
Using closed formula in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Mathematics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Mathematics A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge