The radius of convergence r = lim [n!/(n+1)!] = 0, hence the power series converges only at x=0.
x=0 only
所有跟帖:
• 多谢,儿子说是0。我以为还有别的值,比如1/2(n+1) -flagsix- ♂ (0 bytes) () 09/30/2016 postreply 09:22:37
• x is a fixed value, so it is independent of n. -BeLe- ♀ (0 bytes) () 09/30/2016 postreply 09:25:55
• 再次感谢。这些东西早都忘了。也许当年也没搞明白, 不是数理专业的 -flagsix- ♂ (0 bytes) () 09/30/2016 postreply 09:41:24