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anonymous
 one year ago
Find the sum of the infinite series 4 + 3.2 + 2.56 + 2.048 +...if it exists.
anonymous
 one year ago
Find the sum of the infinite series 4 + 3.2 + 2.56 + 2.048 +...if it exists.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Loser66 can u help?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i cant remeber what the formula for sum is

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sn=a1*1n/1n i think?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2this is a geometric series sum to infinity = 1 / (1  r) where a = frist term and r = common difference

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2sorry that' s a / (1  r)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2to find r divide 2nd term by first this should equal 3rd / 2nd

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2you ve gone wrong somewhere = 4 / (1  0.8) = 4 / 0.2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0how would i know if it doesnt exists?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2here each term is decreasing  so the sum converges to a certain value If each term was greater than the last the sum would diverge  a limit would not exist

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay. can u help me with a few more please? im still trying to get the hang out this

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2eg 2 + 4 + 6 diverges

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0should i ask here or open a new post

welshfella
 one year ago
Best ResponseYou've already chosen the best response.2best to open a new post
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