Pure 3: Series Flashcards

1
Q

Σr

A

1/2 n(n+1)

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2
Q

Σkf(r)= ?

A

kΣf(r)

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3
Q

Σ1 = ?

A

n

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4
Q

Σ[f(r) + g(r)] = ?

A

Σf(r) + Σg(r)

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5
Q

Σr^2 = ?

A

1/6 n(n+1)(2n+1)

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6
Q

Σr^3 = ?

A

1/4 n^2 (n+1)^2

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