名校
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fecfc2c41221f78626f453d1aadb9a.png)
(1)设不等式
的解集为
,若
,求实数
的取值范围;
(2)若
在区间
内有两个零点
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fecfc2c41221f78626f453d1aadb9a.png)
(1)设不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da70b22a00c100e852e2db2cac867b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be17d03c642ef43b577a2c6d59b3a8e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab75c9ed80c2804c8c8c047f1f8c03b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed18bd80c6c4142f68e89f4ad44570b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dae74c724114bfeff024dd7b79f5edc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2 . 已知不等式
的解集为(1,t),记函数
.
(1)求证:函数y=f(x)必有两个不同的零点;
(2)若函数y=f(x)的两个零点分别为
,
,试将
表示成以
为自变量的函数,并求
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5f28031b036e4a37be931d5ff28368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e5ddb6547c568811b4f4546126542c.png)
(1)求证:函数y=f(x)必有两个不同的零点;
(2)若函数y=f(x)的两个零点分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e6e3d7843c3fc910405650ea4fbbe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e6e3d7843c3fc910405650ea4fbbe3.png)
您最近一年使用:0次