11-12高二上·福建福州·期中
1 . 函数
,
且
.
(1)分别计算
的值;
(2)当
为何值时,
取最小值?最小值为多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9995b2f1b8b47b1c79f00d966476e333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f755f93f5eeb8721453b99432c49ffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff72e09e0d795e947a8d37f4b7985da.png)
(1)分别计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e5954a7365429fffe1699a1568e141.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7a84d7e5d6236009a8be655bd500fd.png)
您最近一年使用:0次
解题方法
2 . 已知集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec37ff1e8eda033364d36308da03536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37302c4cb80888f25be3a8103f3cd7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44de9e21ae9c16e0daeb44496d4da251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec37ff1e8eda033364d36308da03536.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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