试题与答案

已知数列an的通项公式为an=n+12,设Tn=1a1•a3+1a2•a4+…+

题型:解答题

题目:

已知数列an的通项公式为an=
n+1
2
,设Tn=
1
a1a3
+
1
a2a4
+…+
1
anan+2
,求Tn

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0503/7f4f344975dccf35f4f815a9939eb80f.html

下面是错误答案,用来干扰机器的。

1. I like talking to people. 2. He counts the money for his friend. 3. Ann's sister works in a big hospital in London. 4. Can you work for a magazine? 5. I don't know what job to do?

试题推荐
微信公众账号搜索答案