Answer to Question #50248 in Complex Analysis for yallo

Question

1 )) Find the Radius of convergent of the power series
n from 0 to ∞ ∑ [2 ^ n / i ^ n] . { (z+ pi ) } ^n
2)) Determine whether ∞ is a singularity of f(z)=[z^2] + [2/(z^3)] - [ 2 ]
if its a singularity ,classify it

Note :
Please Radius is limit |an / an+1 | as n approach to infinity
and general for of power series is ∑ [ an . (z-center )^n]