(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the sum of the following series.

SUM (n=1 to inf) -3^(n-1)/(8^n)

2. Relevant equations

Possibly fit into ar^n format?

3. The attempt at a solution[/b

I feel there is a way that this fits into a geometric form in which case could use a/(1-r) to find the infinite sum. I'm having trouble manipulating to fit into ar^n format when there are a couple powers of n in the general form.

Can the scalar 'a' value have an exponent in it? I guess not then it would be an exponential not a scalar

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# Homework Help: Infinite series

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