Sums of Infinate Series...New Problem, Same Need For Help

skyd92

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Jun 29, 2009
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Again, still don't have the faintest idea of how to start the problem. I need some serious assistance.

Problem: "Identify an infinite geometric series that has a sum of 6 and a first term of 2."

...help...me... :shock:
 
a general geometric series has terms a, ar, ar[sup:1fxso2f9]2[/sup:1fxso2f9], ar[sup:1fxso2f9]3[/sup:1fxso2f9]...

The first term is a.

The sum is given by a formula you will find in your class notes.

So you know that a=2, and the formula gives 6, so you can find r...
 
the thing is, I don't have any class notes and my book is old as dirt and is just about as helpful. I don't know how to work the problem at all.
 
Re: Sums of Infinite Series...New Problem, Same Need For Help

Sorry, that was a stupid typo on my part. I was typing too fast. I am taking a distance learning course, I just want someone to explain this problem a bit clearer than my book did, that is all I ask.
 
If you are sincere, then look at the last one you posted. I gave you the formula for geometric series.
 
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