I am stuck at two questions about Laurent expansion.
Below are the problems:
Determine the Laurent expansion of (z^2 + 2z)/(z^3 -1) in the annulus 0 < | z - 1 | < R about z = 1. Find the large R one can use.
Obtain a Laurent expansions of f(z) =1/[ (z-j) (z-2) ] in the region 0 < | z - j | < square root of 5
Any help would be appreicated.