已知函数
.
(1)若函数
有两个零点,求a的取值范围;
(2)设函数
的两个零点为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35bcc5a70d233634fb3db334da5e2167.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c0ccd77071707c7908b331f57cbaab.png)
更新时间:2020-03-30 00:07:09
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名校
【推荐1】定义凡尔赛函数
已知
,
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(1)求
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(2)当
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上有唯一零点,求a的取值范围.
(3)已知存在a,使得
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(1)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a7b7c834d06f3e28a339db94690172.png)
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(2)当
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(3)已知存在a,使得
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ea256f3be62de93535e9600d78bef5.png)
(1)当
时,证明:
;
(2)若
在
上有且只有一个零点,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ea256f3be62de93535e9600d78bef5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb45fb9ad2005d92738e0b51592c7f1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
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(2)当
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【推荐2】已知
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(1)当
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(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f66d78b2928071b238928dd87a45bab.png)
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解题方法
【推荐1】已知函数
.
(1)若函数
有两个零点,求
的取值范围;
(2)证明:当
时,关于
的不等式
在
上恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d370533659797d9fff9d75422862bd7.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9821a9453a5583dbf492fb6ab6c0a0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/758ee3340a67c270d952949b2bc34562.png)
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【推荐2】已知函数
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与曲线
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都相切,则我们称直线
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(Ⅰ)若
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(Ⅱ)定义:若直线
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【推荐3】已知函数
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(1)若对任意的
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd96de5449a1bd6c2b2dc1698754eef.png)
(1)若对任意的
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(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次