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**clumsy shark****Member**- Registered: 2012-01-07
- Posts: 13

Expand in Laurent Series :

1-

in the ring :

2-

For :

MANY THANKS ^_^

*Last edited by clumsy shark (2013-05-24 21:01:57)*

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 90,753

Hi clumsy shark;

1)

I am unfamiliar with the terminology. To expand in a Laurent series we need the expansion around the poles. These are the zeros of the denominator.

I get for them 2 and i and -i. What happens with that ring stuff? That is where I am stuck. Do you want to expand it around 2?

**In mathematics, you don't understand things. You just get used to them.**

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