- #1

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## Homework Statement

Put in general terms 1, 1, -1, -1, 1, 1, -1, -1, ...

## Homework Equations

## The Attempt at a Solution

obviously (-1)^n, alternates 1, -1, 1, -1...

I have no idea how to figure this out. I thought it might have a sin function in it possibly.

Thanks a lot for your help.