求证:(1+1/n)^n
(1) 求证:n
求证:(1+1/n)^n
求证f(n+1)*f(n-1)-f(n)*f(n) = (-1)^n,f(n)是费波纳茨数列
(1)求证 =(n+1)!/n+1
设n∈N,n>1.求证:logn (n+1)>log(n+1) (n+2)
求证:1/(n+1)+1/(n+2)+1/(n+3)+...+1/(3n+1)>25/24(n是正整数)
求证:(n+2002)(n+2003)(n+2004)(n+2005)+1是一个完全平方数(n为正整数)
当n为正偶数,求证n/(n-1)+n(n-2)/(n-1)(n-3)+...+n(n-2).2/(n-1)(n-3)..
求证 1/(n+1)+1(n+2)+.+1(3n+1)>1
求证1/(n+1)+1/(n+2)+.+1/(3n+1)>1 [n属于N*]
设n属于N,n>1,求证logn (n+1)>logn+1 (n+2)
已知 n>1且n属于N* ,求证logn(n+1)>logn+1(n+2)