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Mathematics 20 Online
OpenStudy (anonymous):

TRUE FALSE -> If a sequence {An} converges to 1/2, then ∑ An must diverge.

OpenStudy (zarkon):

what do you think?

OpenStudy (anonymous):

ISN'T IT TRUE?

OpenStudy (anonymous):

actually i'm not too sure..

OpenStudy (zarkon):

when n is 'large' then \(a_n\) will be really close to 1/2....so in the end you are essentially adding 1/2 an infinite number of times

OpenStudy (anonymous):

so it should be false right? cause sqrt(An) gets close to 0 it's not diverge it's convergent

OpenStudy (zarkon):

??

OpenStudy (anonymous):

i don't know why this one is too hard for me to understand..

OpenStudy (zarkon):

do you agree with what i typed above?

OpenStudy (anonymous):

yes i agree with it

OpenStudy (zarkon):

what do you get when you add 1/2 an infinite number of times

OpenStudy (anonymous):

bigger and bigger value? infinity?

OpenStudy (zarkon):

yes...so that means...

OpenStudy (anonymous):

oh diverge

OpenStudy (anonymous):

hahahaha..

OpenStudy (zarkon):

correct

OpenStudy (anonymous):

it was clear explanation thank you so much!

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