题目内容
计算
+
+
+
+
+…
的结果是______.
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
| 1 |
| 512 |
原式=1-
+
-
+…+
-
=1-
=
.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 256 |
| 1 |
| 512 |
| 1 |
| 512 |
| 511 |
| 512 |
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题目内容
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 16 |
| 1 |
| 32 |
| 1 |
| 512 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 256 |
| 1 |
| 512 |
| 1 |
| 512 |
| 511 |
| 512 |