题目内容
计算:(1+| 1 |
| 3 |
| 1 |
| 8 |
| 1 |
| 15 |
| 1 |
| 99 |
分析:通过找规律得出:(1+
)=
=
,(1+
)=
=
,(1+
)=
….依此类推,可得出结论.
| 1 |
| 3 |
| 4 |
| 3 |
| 22 |
| 22-1 |
| 1 |
| 8 |
| 9 |
| 8 |
| 32 |
| 32-1 |
| 1 |
| 15 |
| 42 |
| 42-1 |
解答:解:∵(1+
)=
=
;(1+
)=
=
;(1+
)=
;
∴(1+
)(1+
)(1+
)…(1+
)=
×
×
×
×
×
×
×
×…×
=
.
| 1 |
| 3 |
| 4 |
| 3 |
| 22 |
| 22-1 |
| 1 |
| 8 |
| 9 |
| 8 |
| 32 |
| 32-1 |
| 1 |
| 15 |
| 42 |
| 42-1 |
∴(1+
| 1 |
| 3 |
| 1 |
| 8 |
| 1 |
| 15 |
| 1 |
| 99 |
| 4 |
| 3 |
| 9 |
| 8 |
| 16 |
| 15 |
| 25 |
| 24 |
| 36 |
| 35 |
| 49 |
| 48 |
| 64 |
| 63 |
| 81 |
| 80 |
| 100 |
| 99 |
| 20 |
| 11 |
点评:解答此题关键是找出规律,再代入所求的式子.
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