题目内容
计算:
+
+
+…+
.
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 256 |
原式=1-
+
-
+…+
-
=1-
=
.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 128 |
| 1 |
| 256 |
| 1 |
| 256 |
| 255 |
| 256 |
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题目内容
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 256 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 128 |
| 1 |
| 256 |
| 1 |
| 256 |
| 255 |
| 256 |