题目内容
(理)对于数列,若
[(3n-1)an]=1,则
(nan)=______.
| lim |
| n→∞ |
| lim |
| n→∞ |
∵
[(3n-1)an]=1
∴
an=
=0
∴
nan =
{
[3n-1)an+
an]}=
[3n-1)an]+
an
=
故答案为:
| lim |
| n→∞ |
∴
| lim |
| n→∞ |
| 1 |
| 3n-1 |
∴
| lim |
| n→∞ |
| lim |
| n→∞ |
| 1 |
| 3 |
| 1 |
| 3 |
| lim |
| n→∞ |
| 1 |
| 3 |
| lim |
| n→∞ |
| 1 |
| 3 |
=
| 1 |
| 3 |
故答案为:
| 1 |
| 3 |
练习册系列答案
相关题目