a |
a-1 |
2Sn |
an |
1 |
1+an |
1 |
1-an+1 |
1 |
3 |
2•
| ||
an |
(3a-1)an-2a |
an(a-1) |
1 |
3 |
1 | ||
1+(
|
1 | ||
1-(
|
3n |
3n+1 |
3n+1 |
3n+1-1 |
3n+1-1 |
3n+1 |
3n+1-1+1 |
3n+1-1 |
1 |
3n+1 |
1 |
3n+1-1 |
1 |
3n+1 |
1 |
3n+1-1 |
1 |
3n+1 |
3 |
3n+1-1 |
1 |
3n |
1 |
3n+1 |
an |
an-1 |
2•
| ||
an |
(3a-1)an-2a |
an(a-1) |
3a+2 |
a |
3a2+2a+2 |
a2 |
3a+2 |
a |
3a2+2a+2 |
a2 |
1 |
3 |
1 |
3 |
1 |
3 |
1 |
3 |
1 | ||
1+(
|
1 | ||
1-(
|
3n |
3n+1 |
3n+1 |
3n+1-1 |
3n+1-1 |
3n+1 |
3n+1-1+1 |
3n+1-1 |
1 |
3n+1 |
1 |
3n+1-1 |
1 |
3n+1 |
1 |
3n+1-1 |
1 |
3n+1 |
1 |
3n |
1 |
3n+1-1 |
1 |
3n+1 |
1 |
3n+1 |
1 |
3n+1-1 |
1 |
3n |
1 |
3n+1 |
1 |
3n+1 |
3 |
3n+1-1 |
1 |
3n |
1 |
3n+1 |
1 |
3 |
1 |
32 |
1 |
32 |
1 |
33 |
1 |
3n |
1 |
3n+1 |
1 |
3 |
1 |
32 |
1 |
32 |
1 |
33 |
1 |
3n |
1 |
3n+1 |
1 |
3 |
1 |
3n+1 |
1 |
3 |
1 |
3 |
科目:高中数学 来源: 题型:
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com