请你判断一下:(n+1)^n和n^n+1(n为自然数)那个大?那个小?请先猜想,在验证你的结论是否正确
人气:251 ℃ 时间:2019-09-29 04:53:31
解答
当n≤2时前者大,当n≥3时后者大.
证明:显然两者均为正数.
(n+1)^n/n^(n+1)=(1+1/n)^n/n
∵n∈N*,∴(1+1/n)^n
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