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Mathematics 5 Online
OpenStudy (anonymous):

Find the sum of the following infinite geometric series, if it exist. 1/2+(-1/4)+1/8+(-1/16)+...

OpenStudy (sloppycanada):

By chance do you do Keystone Online? I've seen this exact questions on their site.. First step for this - How does one go about finding the ratio for this?

OpenStudy (anonymous):

the ratio is -1/2

OpenStudy (sloppycanada):

Since it is in between 1 and -1, will it converge or not? This is very important.

OpenStudy (anonymous):

I don't think so???

OpenStudy (sloppycanada):

No, since it does converge, we have a solution

OpenStudy (sloppycanada):

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