I iDoof New member Joined Oct 17, 2005 Messages 21 Dec 18, 2005 #1 i have this series: SUM (from n=1 to infinity) of n!/(2 * 5 * 8 * ... * (3n+2)) what test should i use to find its convergence? thanks for your time!
i have this series: SUM (from n=1 to infinity) of n!/(2 * 5 * 8 * ... * (3n+2)) what test should i use to find its convergence? thanks for your time!
G galactus Super Moderator Staff member Joined Sep 28, 2005 Messages 7,203 Dec 18, 2005 #2 The ratio test is good to use with factorials.