用数学归纳法证明(2^n-1)/(2^n+1)>n/(n十1)(n≥3,n∈N+)
问题描述:
用数学归纳法证明(2^n-1)/(2^n+1)>n/(n十1)(n≥3,n∈N+)
答
(2^n-1)/(2^n+1)>n/(n十1)(n≥3,n∈N+),
1-2/(2^n+1)>1-1/(n+1),
2/(2^n+1)