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All 3 Flashcards — Arithmetic series
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Question
Sequence or series?
Answer
Sequence = list. Series = sum.
💡 Hint
Commas vs plus signs.
Question
Sum formula?
Answer
Sₙ = (n/2) × (2u₁ + (n − 1)d)
💡 Hint
For totals.
Question
Σ from n = 1 to 4 of 2n?
Answer
2 + 4 + 6 + 8 = 20
💡 Hint
Substitute values of n.
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Full study notes for Arithmetic series
Topic 1.2 hub
Sequences and sigma notation
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