题目内容
(1+
)×(1-
)×(1+
)×(1-
)×…×(1+
)×(1-
)=______.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 9 |
| 1 |
| 9 |
(1+
)×(1-
)×(1+
)×(1-
)×…×(1+
)×(1-
)
=
×
×
×
×…×
×
=
×
=
故答案为:
.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 9 |
| 1 |
| 9 |
=
| 1 |
| 2 |
| 3 |
| 2 |
| 2 |
| 3 |
| 4 |
| 3 |
| 8 |
| 9 |
| 10 |
| 9 |
=
| 1 |
| 2 |
| 10 |
| 9 |
=
| 5 |
| 9 |
故答案为:
| 5 |
| 9 |
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