已知函数
,则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5eab3a76ed44504bc0bc5d669d1dda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e1a1611f320c0f358df77aaae3f942.png)
A.0 | B.1 | C.2 | D.3 |
17-18高一上·福建泉州·阶段练习 查看更多[2]
更新时间:2017-10-29 19:57:28
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适中
(0.65)
【推荐1】已知函数
的定义域为
当
时,
;当
时,
;当
时,
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69c13a09123ae873e0b0501aaecc507e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54eefdf352c370d6ee89d09061a41574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11925ebdce66294e935f6bfb5fdd002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777615ad90ad4a1790b9b151b3ab7e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe54a368d7ed32da70dc4196243d31bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7279b4463e5898144f1608352cb2398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/959f019ced15fee01049607a897aae83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca6d8513828d6eb4181e8f0393309994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a139fcdd2a8f339232233a8b716be9a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
A.![]() | B.![]() | C.0 | D.2 |
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单选题
|
适中
(0.65)
【推荐2】对于任意x,[x]表示不超过x的最大整数,如[1.1]=1,[﹣2.1]=﹣3,定义R上的函数f(x)=[2x]+[4x]+[8x],若A={y|y=f(x),0≤x≤1},则A中所有元素的和为
A.55 | B.58 | C.63 | D.65 |
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