Summation Formulas Flashcards by Eric Durham

Q

n

Σ c = ?

i = 1

A

cn

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Q

n

Σ i = ?

i=1

A

n(n+1)

2

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Q

n

Σ i² = ?

i=1

A

n(n+1)(2n+1)

6

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Q

n

Σ i^3 = ?

i=1

A

n²(n +1)²

4

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