题目内容
观察下列关系式:
=
+
,
=
+
,
=
+
,
=
+
,…,请你用含n的式子表示其一般规律是______.
| 1 |
| 1 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 12 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 20 |
解;根据题意,得
=
+
.
故答案为
=
+
.
| 1 |
| n |
| 1 |
| n+1 |
| 1 |
| n(n+1) |
故答案为
| 1 |
| n |
| 1 |
| n+1 |
| 1 |
| n(n+1) |
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