题目内容
若规定一种新运算为a?b=
+
,如果2?
=-1,那么2001?2002=______.
1 |
ab |
1 |
(a-1)(b+A) |
1 |
2 |
由2?
=-1,根据题意得:
+
=-1,
解得:A=-1,
则2001?2002=
+
=
-
+
-
=
-
=
.
故答案为:
1 |
2 |
1 | ||
2×
|
1 | ||
(2-1)(
|
解得:A=-1,
则2001?2002=
1 |
2001×2002 |
1 |
2000×2001 |
1 |
2001 |
1 |
2002 |
1 |
2000 |
1 |
2001 |
1 |
2000 |
1 |
2002 |
1 |
2002000 |
故答案为:
1 |
2002000 |
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