题目内容
(1)化简下列各式,观察计算结果,归纳你发现的规律:
①
=______,2
=______.
②
=______,3
=______.
③
=______,4
=______.
(2)根据上述规律写出
与5
的关系是______;
(3)请你将发现的规律用含自然数n(n≥1)的等式表示出来______.
①
1+
|
|
②
2+
|
|
③
3+
|
|
(2)根据上述规律写出
4+
|
|
(3)请你将发现的规律用含自然数n(n≥1)的等式表示出来______.
(1)①
=
,2
=
;
②
=
,3
=
;
③
=
,4
=
;
(2)
=
,即相等;
(3)
=(n+1)
.
故答案为:(1)①
,
;②
,
;③
,
;(2)相等;(3)
=(n+1)
.
1+
|
2
| ||
3 |
|
2
| ||
3 |
②
2+
|
3 |
2 |
|
3 |
2 |
③
3+
|
4
| ||
5 |
|
4
| ||
5 |
(2)
4+
|
|
(3)
n+
|
|
故答案为:(1)①
2
| ||
3 |
2
| ||
3 |
3 |
2 |
3 |
2 |
4
| ||
5 |
4
| ||
5 |
n+
|
|
练习册系列答案
相关题目