题目内容
方程
+
+
+…+
=2008的解是（ ）
| x |
| 2 |
| x |
| 6 |
| x |
| 12 |
| x |
| 2008×2009 |
| A．1 | B．-1 | C．2008 | D．2009 |
方程
+
+
+…+
=2008变形：
+
+
+…+
=2008，
（x-
）+（
-
）+（
-
）+…+（
-
）=2008，
x-
+
-
+
-
+…+
-
=2008，即x-
=2008，
解得x=2009．
故选D．
| x |
| 2 |
| x |
| 6 |
| x |
| 12 |
| x |
| 2008×2009 |
| x |
| 1×2 |
| x |
| 2×3 |
| x |
| 3×4 |
| x |
| 2008×2009 |
（x-
| x |
| 2 |
| x |
| 2 |
| x |
| 3 |
| x |
| 3 |
| x |
| 4 |
| x |
| 2008 |
| x |
| 2009 |
x-
| x |
| 2 |
| x |
| 2 |
| x |
| 3 |
| x |
| 3 |
| x |
| 4 |
| x |
| 2008 |
| x |
| 2009 |
| x |
| 2009 |
解得x=2009．
故选D．
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相关题目
方程
+
+
+…+
=2008的解是（ ）
| x |
| 2 |
| x |
| 6 |
| x |
| 12 |
| x |
| 2008×2009 |
| A、1 | B、-1 |
| C、2008 | D、2009 |