series further | Revision Server | Page 1

fading radish Mar 16, 2024, 3:09 PM

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not sure how to begin

lament tangle Mar 16, 2024, 3:39 PM

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Well I’f Sn has a squared term in it what kind of series are we summing

fading radish Mar 16, 2024, 3:45 PM

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I dont know

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arithmetic?

lament tangle Mar 16, 2024, 3:46 PM

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Yes

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Well of the form an+b

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And you know the general results for the sum of n and sum of a constant

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So use them and compare coefficients to Sn

fading radish Mar 16, 2024, 3:47 PM

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1/2 n(n+1)

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and n

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i still dont really get it

lament tangle Mar 16, 2024, 3:49 PM

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You need a and b

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a/2 n(n+1) + bn = 3n^2 +5n

fading radish Mar 16, 2024, 3:50 PM

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ohh ok

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once i find a and b then what do i do

lament tangle Mar 16, 2024, 4:01 PM

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Then u express ur as

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