题目内容
计算：|
-
|+|
-
|+|
-
|+…+|
-
|．
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 4 |
| 1 |
| 10 |
| 1 |
| 9 |
|
-
|+|
-
|+|
-
|+…+|
-
|
=
-
+
-
+
-
+…+
-
=
-
=
．
| 1 |
| 3 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 4 |
| 1 |
| 10 |
| 1 |
| 9 |
=
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 9 |
| 1 |
| 10 |
=
| 1 |
| 2 |
| 1 |
| 10 |
=
| 2 |
| 5 |
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