很明显, n = 2,3, ..... , for each n,a = (1/n)^(1/(n-1)) 和 b = (1/n)^(n/(n-1)) 是不同的。由于 n 可取无限位数 2,3,… ,无须证明infinite。请注意, n 不能是1,因为你不能除零。
leo爸的证明是正确的。您的担心是多余的。
所有跟帖:
• n 是无限的,不一定由它组成的函数是无限的。 -yddad- ♂ (18 bytes) () 11/02/2011 postreply 12:55:15
• Again, 您的担心是多余的。 -michigan007- ♀ (1507 bytes) () 11/02/2011 postreply 16:26:11
• 回复:Again, 您的担心是多余的。 -yddad- ♂ (193 bytes) () 11/02/2011 postreply 18:29:02
• You were confused -michigan007- ♀ (676 bytes) () 11/03/2011 postreply 06:25:20
• 我没有说他是是错的只是说不严密 -yddad- ♂ (445 bytes) () 11/02/2011 postreply 13:27:21
• Where is your logic? -michigan007- ♀ (4941 bytes) () 11/02/2011 postreply 16:28:30
• we are using different logic. -yddad- ♂ (4905 bytes) () 11/02/2011 postreply 18:50:02
• Your logic is wrong. -michigan007- ♀ (2647 bytes) () 11/03/2011 postreply 09:53:05
• Please read the question carefully -michigan007- ♀ (1376 bytes) () 11/02/2011 postreply 16:48:29
• Yes, I do read carefully. -yddad- ♂ (420 bytes) () 11/02/2011 postreply 18:23:58
• You were confused again -michigan007- ♀ (2074 bytes) () 11/03/2011 postreply 06:23:18