题目内容
若
+(ab-2)2=0,那么
+
+…+
的值是______.
| a-1 |
| 1 |
| a |
| 1 |
| (a+1)(b+1) |
| 1 |
| (a+2010)(b+2010) |
∵
+(ab-2)2=0,
∴a-1=0且ab-2=0,
解得:a=1,b=2,
∴
+
+…+
=1+
+
+…+
=1+
-
+
-
+…+
-
=1+
-
=
.
故答案为:
| a-1 |
∴a-1=0且ab-2=0,
解得:a=1,b=2,
∴
| 1 |
| a |
| 1 |
| (a+1)(b+1) |
| 1 |
| (a+2010)(b+2010) |
=1+
| 1 |
| 2×3 |
| 1 |
| 3×4 |
| 1 |
| 2011×2012 |
=1+
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2011 |
| 1 |
| 2012 |
=1+
| 1 |
| 2 |
| 1 |
| 2012 |
=
| 3017 |
| 2012 |
故答案为:
| 3017 |
| 2012 |
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