Paper 1 · Sequences and Series
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Lesson 4 of 15
Sequences and Series 1: Arithmetic Sequences 1
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- Find the general term of an arithmetic sequence with Tₙ = a + (n−1)d from page 22
- Find sums with Sₙ = (n/2)(2a + (n−1)d) and evaluate specific terms like T₅₀ or T₁₀₀
- Solve 'smallest n for which Sₙ < k' by setting Sₙ = k, solving, then rounding
- Recover terms from a given Sₙ using T₁ = S₁ and Tₖ = Sₖ − Sₖ₋₁
Most recent exam questions
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