作者midarmyman (midarmyman)
看板trans_math
标题[张爸]
时间Thu Jun 18 21:34:28 2009
lim n^n/(n+1)^(n+1)
n→∞
这个东西大家会怎麽算呢?
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※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.117.198.78
※ 编辑: midarmyman 来自: 140.117.198.78 (06/18 21:34)
1F:→ GLP:确定是极限吗? 219.70.177.177 06/18 21:37
2F:→ GLP:如果是那就是0拉 @@ 219.70.177.177 06/18 21:37
3F:→ midarmyman:我在算收敛半径遇到的东西 140.117.198.78 06/18 21:39
4F:→ GLP:就0了 比大小而已@@ 219.70.177.177 06/18 21:39
5F:→ midarmyman:是因为分母次方多一所以是零吗? 140.117.198.78 06/18 21:40
6F:→ GLP:嗯@@ 219.70.177.177 06/18 21:40
7F:→ midarmyman:书上是把它改成1/e再乘上另一个式子 140.117.198.78 06/18 21:40
8F:→ midarmyman:嗯QQ 140.117.198.78 06/18 21:41
9F:→ midarmyman:P级数的发散范围有限定P要大於零吗? 140.117.198.78 06/18 21:41
10F:→ midarmyman:原文书写0<p<=1才发散 140.117.198.78 06/18 21:41
11F:推 immrhsu:用罗毕达吧~~~ 220.132.148.86 06/18 21:41
12F:→ immrhsu:比较严谨 220.132.148.86 06/18 21:42
13F:→ midarmyman:罗毕达会用得无穷无尽@@ 140.117.198.78 06/18 21:43
14F:→ GLP:p不用大於0阿 p< = 1都发散~ 219.70.177.177 06/18 21:43
15F:→ GLP:你就说 微n+1次 虎滥一下@@ 然後 分子就0了@@ 219.70.177.177 06/18 21:44
16F:→ GLP:说错 分子1 然後分母还有n 取极限就0了@@ 219.70.177.177 06/18 21:47
17F:→ midarmyman:= =直接看就好 140.117.198.78 06/18 21:48