名校
解题方法
1 . 已知函数
的定义域为
.
(1)求
;
(2)当
时,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf252ecf0ec9de6de431f89b9c5758e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1376168658dbe7f5b7f4d75fb1db545a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac90d0aab28dc12983b71288bdd7536.png)
您最近一年使用:0次
名校
2 . 已知函数
,函数
.
⑴若
的定义域为
,求实数
的取值范围;
⑵当
,求函数
的最小值
;
⑶是否存在实数
,使得函数
的定义域为
,值域为
?若存在,求出
的值;若不存在,则说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b85ce87a18e34bac31262b91c80b70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5defeadcd37d010faf90c22305e6c5fc.png)
⑴若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00aefe8f4cf676d05ba6fb0303bc032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
⑵当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7438dce89339349594d858f4eb78e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2ac429737efebf150a1bd088ba846.png)
⑶是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd55400929c757f6f55f87e0e3d52df1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db527571cfd256c515424c6f9d114284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcde49e2cdd9bc3b3be7f2bc49aa5e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
您最近一年使用:0次
2019-05-08更新
|
1235次组卷
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6卷引用:重庆市凤鸣山中学2018-2019学年高二下学期期中(文)数学试题