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http://img84.imageshack.us/img84/3151/w2px1.th.jpg [Broken]

See above files (one is the question and one is the answer)

I can to the whole question, other than the last part - for part (f), why are we concerned with the sum to infinity of the series? I am confused as to why this is necessary.

Any help is appreciated.

Thanks

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# Homework Help: Geometric series

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