名校
1 . 已知
,则
的最小值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8609879bf16c256334c0b61974864d4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878b41cd7924430e732eb19573a1aa25.png)
您最近一年使用:0次
2019-09-11更新
|
769次组卷
|
2卷引用:山西省长治市第二中学2018-2019高二下学期期中数学(理)试卷
2 . 已知函数
是定义在
上的奇函数,且
时,
.
(1)求函数
的解析式并在如图所示的坐标系中作出函数
的图象;
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095771684642816/2096193432510464/STEM/6088aec295fb499c86e54202f82627c1.png?resizew=268)
(2)若对任意的
有
恒成立,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/312488bc6c75e5b0ae08338843d8e3fb.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://img.xkw.com/dksih/QBM/2018/12/13/2095771684642816/2096193432510464/STEM/6088aec295fb499c86e54202f82627c1.png?resizew=268)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7684dd71dad9face3b64f24c46540ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
3 . 设
表示
三者中较小的一个,若函数
,则当
时,
的值域是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36bfbd04fc26eabd210abea5d9d84b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c5fe8a9ad42e52a8a40242865c6752.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0387bc74870adc649ef912f7714cd5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb5e9044adc964df7bc34dcfcdbaa749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-12-14更新
|
2049次组卷
|
3卷引用:山西省临汾第一中学2017-2018学年高一上学期第二次调研(期中)考试数学试题