(1+1/3)(1+1/4)(1+1/5)(1+1/6)...(1+1/2n-1)(1+1/2n)的值为多少
问题描述:
(1+1/3)(1+1/4)(1+1/5)(1+1/6)...(1+1/2n-1)(1+1/2n)的值为多少
答
先把括号里的先加得4/3乘以5/4乘以6/5乘以7/6...2n/2n-1乘以2n+1/2n 解得最后的结果是(2n +1)/3