题目内容
计算(1-
|
试题答案
A
相关题目
计算(1-
-
-…-
)(
+
+…+
)-(1-
-
-…-
)(
+
+…+
)的结果应该是（ ）
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2003 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2004 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2004 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2003 |
A、
| ||
B、
| ||
C、
| ||
D、
|
计算(1-
-
-…-
)(
+
+…+
)-(1-
-
-…-
)(
+
+…+
)的结果应该是（ ）
查看习题详情和答案>>
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2003 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2004 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2004 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 2003 |
A．
| B．
| C．
| D．
|
（阅读理解）
∵
=
-
=
-
=
-
…
∴计算：
+
+
+…+
=
-
+
-
+
-
+…+
-
=1-
=
理解以上方法的真正含义，计算：
+
+…+
．
查看习题详情和答案>>
∵
| 1 |
| 1×2 |
| 1 |
| 1 |
| 1 |
| 2 |
| 1 |
| 2×3 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3×4 |
| 1 |
| 3 |
| 1 |
| 4 |
…
∴计算：
| 1 |
| 1×2 |
| 1 |
| 2×3 |
| 1 |
| 3×4 |
| 1 |
| 2004×2005 |
=
| 1 |
| 1 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2004 |
| 1 |
| 2005 |
=1-
| 1 |
| 2005 |
=
| 2004 |
| 2005 |
理解以上方法的真正含义，计算：
| 1 |
| 1×3 |
| 1 |
| 3×5 |
| 1 |
| 2003×2005 |