作者scoro (史库尔)
看板trans_math
标题[考古] 94 93东吴-级数
时间Fri Jul 7 01:07:16 2006
1. ∞
(a)Starting with the geometric series Σ x^n , find the sum of the series
n=0
∞
Σ nx^(n-1) , |x| < 1
n=1
∞
(b)Find the sum of the series Σ n/2^n
n=1
2.Find the radious of convergence and interval of convergence of the series
∞ (-3)^n.x^n
Σ --------------
n=0 √(n+1)
这两题...麻烦各位大大了@@
级数是我没学过的,都靠自己看,所以感觉很不扎实
希望大大们能多多指教^^
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 220.136.162.7