the funtion is cosh(z)/(1 -z) about z=0
to find the series representation would i not just multiply the series of cosh(z) with that of 1/(1-z) about z=0
After that is there any simplifying i could do? or will it just be a multiplication of 2 sums?
am i missing any tricks? seems too easy to do the way i'm doing it.
thanks for any help!