设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0632bc67a48ee16de53fe7e19ec3328.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39258887ad7d9555909c988f2086c7bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0632bc67a48ee16de53fe7e19ec3328.png)
更新时间:2023-03-10 15:02:47
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填空题-单空题
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容易
(0.94)
【推荐1】已知
的定义域和值域都是
,且满足下表,则
=( ) .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3ed03b0f8fb8b88d7edf6165345c6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa16aea6803864cc915c63e8ee9936c.png)
x | -1 | 0 | 1 | 2 |
f(x) | 0 | 1 | -1 | 2 |
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