Mathematics A-Level
nth term formulas
What nth term formulas means in Mathematics A-Level, as defined for WJEC.
Definition of nth term formulas
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Reference: WJEC
A formula such as xₙ = 3n − 2 or xₙ = 2ⁿ which allows any term to be calculated directly by substituting n.
Topics that use nth term formulas
- Sequences and Series (A2 Unit 3: Pure Mathematics B) (WJEC A-Level)
Related terms
- Arithmetic sequence
- binomial approximation
- common difference
- compound growth and depreciation
- Convergent geometric series
- Geometric sequence
- infinite binomial series
- linearity of summation
Using nth term formulas in the exam
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