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1.6.12 Arithmetic sequences and series (A-level only)

What feature confirms that a sequence is arithmetic?

A

When the first and last terms are known, use Sn=n2(a+l)\boxed{S_n=\frac{n}{2}(a+l)}Sn​=2n​(a+l)​.

B

Its terms do not approach zero.

C

Consecutive terms have a constant difference.

D

If lll is the last term, then l=a+(n−1)d\boxed{l=a+(n-1)d}l=a+(n−1)d​.

1.6.12 Arithmetic sequences and series (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /1.6.12 Arithmetic sequences and series (A-level only)

Flashcards for OCR (MEI) A Level Maths 1.6.12 Arithmetic sequences and series (A-level only), covering the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03. 21 cards, matched to the OCR (MEI) A Level Maths (H640) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.