Sequences and series formulae Flashcards by Chloe Moss | Brainscape

Q

sum of arithmetic series

A

n/2 (2a + (n-1)d)

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Q

nth term of a geometric sequence

A

un = ar^n-1

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Q

nth term of a linear sequence

A

a + (n-1)d

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Q

formula for recurrence relations

A

un+1 = un+2

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Q

A

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