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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