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Mathematics 19 Online
OpenStudy (anonymous):

Please Help!! Will Medal!! Here is an infinite geometric series:

OpenStudy (anonymous):

OpenStudy (anonymous):

whats the definition of a convergent geometric series, u know?

OpenStudy (anonymous):

Not really.

OpenStudy (anonymous):

a series converges when the sum of its terms approaches a certain number instead of infinity, if it approached infinity then it is called divergent so whats the situation with your series, does it approach a number or inifinity?

OpenStudy (anonymous):

Infinity I think

OpenStudy (anonymous):

you can find out by working out the first 6 or 7 terms if you notice that as i increases the term gets smaller then it will be approaching a ceretain number, but if as i increases the term gets bigger and bigger then it diverges and approaches infinity, wanna give it a try?

OpenStudy (anonymous):

even the first 4 terms i=1,2,3,4 should give u here a clear idea ;)

OpenStudy (anonymous):

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OpenStudy (anonymous):

Hmm

OpenStudy (anonymous):

notice how as i increases, the term 2(3/5)^i Decreases ... eventually the values of the terms will get so small that they will be approaching Zero for higher i's so what does this tell yo about the series - is it convergent or divergent?

OpenStudy (anonymous):

typo: you instead of yo above

OpenStudy (anonymous):

@moemand have u cracked it or not yet?

OpenStudy (anonymous):

A. TRUE

OpenStudy (anonymous):

That's what I was about to say

OpenStudy (anonymous):

well done, as long as you understand the work thats great

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