#series core pure 1

51 messages · Page 1 of 1 (latest)

surreal haven
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Cote pure ?

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This fm ?

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Ooohokok

muted tundra
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you need to split the sum

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r = 15

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but u need r to be 1

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how could you split that into a difference of two sums

surreal haven
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I think it's

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R²+2r

muted tundra
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na

surreal haven
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Nvm 😢

surreal haven
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Was going to say sum😭

muted tundra
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so its from 15 to 30 right

surreal haven
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Yea

muted tundra
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they want u to use the result in part a

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but this result is valid when r = 1

surreal haven
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Okay?

muted tundra
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so you have one sum from 30 to 1

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and another from 14 to 1

surreal haven
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Yea

muted tundra
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ye then use part a

surreal haven
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Can't u do

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r2+2r then treat it as separate sums

surreal haven
muted tundra
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for part b?

surreal haven
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Factor *

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Yea

muted tundra
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and then use the standard sums right

surreal haven
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Yea

muted tundra
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problem is it oinly works when r = 1

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in q r is 15

surreal haven
muted tundra
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ik

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still

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wont work

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the bottom number must be 1

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thats why im sayin to write as two sums

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30 to 1 and 14 to 1

surreal haven
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Damn I see

surreal haven
muted tundra
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yh

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sub in the top numbers

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so 30 and 14

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into ur answer for part a

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oh wait

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u dont need to do all this

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idk how ima write this over text

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but like

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its the sum from 30 to 1 of r(r+2) - the sum from 14 to 1 of r(r+2)

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ur welcome