- #1

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- 5

## Homework Statement

3, -3/2, 3/4, -3/8,...

## Homework Equations

## The Attempt at a Solution

I began to write, [itex](-1)^{n+1} \frac{3}{...}[/itex], but I began to despair once I came upon the denominator. I know that every term's, except 3, denominator can be written as a power of two, but I wasn't sure on how to account for the 3.