题目内容
△表示一种运算,它的含义是x△y=
+
,已知2△1=
+
=
,那么2001△2002的值是.
| 1 |
| xy |
| 1 |
| (x+1)(y+A) |
| 1 |
| 2×1 |
| 1 |
| (2+1)(1+A) |
| 2 |
| 3 |
由已知2△1=
+
=
+
=
解得A=1
2001△2002=
+
=
-
+
-
=
-
=
答:2001△2002的值是
.
| 1 |
| 2×1 |
| 1 |
| (2+1)(1+A) |
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 3×(1+A) |
| 2 |
| 3 |
解得A=1
2001△2002=
| 1 |
| 2001×2002 |
| 1 |
| (2001+1)×(2002+1) |
| 1 |
| 2001 |
| 1 |
| 2002 |
| 1 |
| 2002 |
| 1 |
| 2003 |
| 1 |
| 2001 |
| 1 |
| 2003 |
| 2 |
| 4008003 |
答:2001△2002的值是
| 2 |
| 4008003 |
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