题目内容
如果A#B=
,那么1#2-2#3-3#4-…-2002#2003-2003#2004=______.
| B-A |
| A×B |
A#B=
=
-
=
-
;
1#2-2#3-3#4-…-2002#2003-2003#2004,
=
-
-(
-
)-(
-
)-…-(
-
)-(
-
),
=
;
答:如果A#B=
,那么1#2-2#3-3#4-L-2002#2003-2003#2004=
.
故答案为:
.
| B-A |
| A×B |
| B |
| A×B |
| A |
| A×B |
| 1 |
| A |
| 1 |
| B |
1#2-2#3-3#4-…-2002#2003-2003#2004,
=
| 1 |
| 1 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2002 |
| 1 |
| 2003 |
| 1 |
| 2003 |
| 1 |
| 2004 |
=
| 1 |
| 2004 |
答:如果A#B=
| B-A |
| A×B |
| 1 |
| 2004 |
故答案为:
| 1 |
| 2004 |
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