I'm assuming this is the correct way to write;

where the n goes on for infinity.

So how can you prove;

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- January 6th 2010, 09:19 AMRhysGMHow can you prove this?

I'm assuming this is the correct way to write;

where the n goes on for infinity.

So how can you prove;

- January 6th 2010, 09:30 AMKrizalid
__Hint__: and use telescoping series. - January 6th 2010, 11:18 AMRhysGM
- January 6th 2010, 11:49 AMPlato

Now - January 6th 2010, 11:57 AMRhysGM
- January 7th 2010, 02:05 AMRhysGM
- January 7th 2010, 03:18 AMmr fantastic
sum infinite geometric series: sum infinite geometric series - Google Search=

- January 7th 2010, 02:39 PMDrexel28
I gave you this explanation in the original thread.

As for**Krizalid's**answer merely note that . So, for a finite sum and we notice that the sum is the same as which simplifies to . Taking the limit finishes the argument. - January 13th 2010, 05:00 AMRhysGM