题目内容
观察下列各式:
+3=
×3,
+4=
×4,
+5=
×5,…,______.
| 3 |
| 2 |
| 3 |
| 2 |
| 4 |
| 3 |
| 4 |
| 3 |
| 5 |
| 4 |
| 5 |
| 4 |
∵
+3=
×3,
+4=
×4,
+5=
×5,
…,
∴
+n+1=
×(n+1),
故答案为:
+n+1=
×(n+1)..
| 3 |
| 2 |
| 3 |
| 2 |
| 4 |
| 3 |
| 4 |
| 3 |
| 5 |
| 4 |
| 5 |
| 4 |
…,
∴
| n+1 |
| n |
| n+1 |
| n |
故答案为:
| n+1 |
| n |
| n+1 |
| n |
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