题目内容
计算:(1-
-
-…-
)(
+
+…+
)-(1-
-
-…-
)(
+
+…+
)=______.
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2003 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2004 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2004 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2003 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2004 |
原式=(1-a+
| 1 |
| 2004 |
| 1 |
| 2004 |
=a-a2+
| a |
| 2004 |
| 1 |
| 2004 |
| a |
| 2004 |
=
| 1 |
| 2004 |
故答案为:
| 1 |
| 2004 |
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