I need some homework help for finding the interval of convergence for the series (x/2)^n where n starts at n=0 and ends at n=infinity.
The series you are interested in the convergence of may be written:Originally Posted by bsteel
(If you multiply out the product on the Left Hand Side you will find
all but the first and last terms cancel).
converges if and only if:
converges, and this last expression converges if and only if
or, if and only if: