http://i48.tinypic.com/awynad.jpg

Is this sufficient for the question asked? or does that extra -1 make it less of a power series?

Thanks!

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- Feb 20th 2010, 03:55 PMdavismjSimple Power Series Question
http://i48.tinypic.com/awynad.jpg

Is this sufficient for the question asked? or does that extra -1 make it less of a power series?

Thanks! - Feb 20th 2010, 04:10 PMDrexel28
- Feb 20th 2010, 04:30 PMdavismj
I'm sorry, but that doesn't really help (except I see my typo!)

From what I can tell, you've rewritten the original expression as

$\displaystyle \frac{1}{1-z} + \frac{z}{1-z}$ and of course $\displaystyle \frac{1}{1-z}$ is $\displaystyle \sum_{n=0}^{\infty}z^n$

Not sure where you're getting the negative sign from, though.