How to find the sum of the series sum_"n=0"^oo(z^(4n)/((4n)!))∞∑n=0(z4n(4n)!) when |z| < 1 ?
1 Answer
Apr 12, 2017
Explanation:
We have
so
or
now doing
Finally
or also
We have
so
or
now doing
Finally
or also