题目内容
已知函数f(x)=| 1 |
| 1+x |
| 1 |
| 1+0 |
| 1 |
| 1+a |
| 1 |
| a |
| 1 | ||
1+
|
| a |
| 1+a |
| 1 |
| 2011 |
| 1 |
| 2010 |
| 1 |
| 2 |
分析:首先根据已知条件把所求的式子进行化简,计算即可.
解答:解:∵f(
)=
=
f(
)+f(
)+…+f(
)+f(1)
=
+
+
+…+
+
f(1)+f(2)+…+f(2010)+f(2011)
=
+
+
+…+
+
则原式=
+
+
+…+
+
+1+
+
+
+…+
+
=1+(
+
)+(
+
)+(
+
)+…+(
+
)=2012.
故答案是:2012.
| 1 |
| a |
| 1 | ||
1+
|
| a |
| 1+a |
f(
| 1 |
| 2011 |
| 1 |
| 2010 |
| 1 |
| 2 |
=
| 2011 |
| 2012 |
| 2010 |
| 2011 |
| 2009 |
| 2010 |
| 2 |
| 3 |
| 1 |
| 2 |
f(1)+f(2)+…+f(2010)+f(2011)
=
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2011 |
| 1 |
| 2012 |
则原式=
| 2011 |
| 2012 |
| 2010 |
| 2011 |
| 2009 |
| 2010 |
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2011 |
| 1 |
| 2012 |
=1+(
| 1 |
| 2 |
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 3 |
| 3 |
| 4 |
| 1 |
| 4 |
| 2011 |
| 2012 |
| 1 |
| 2012 |
故答案是:2012.
点评:本题主要考查了函数值的计算,计算的关键是理解已知条件中的关系式,对每个式子进行化简.
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