Hi. I have to find and classify the isolated singularities for:
So, I've found that
Now, I think I should make the Laurent series for f(z), but I don't know how to handle this function to get it's Laurent series representation.
I also know, of course, that:
I was looking at my notebook. Should I use a thing called "principle of isolated zeroes" or something like that?
I was trying to determine the order of the pole
EDIT: Alright, I did it this way:
I took
Then it's a pole of order 1.