已知函数
,函数
.
(Ⅰ)若曲线
与直线
相切,求
的值;
(Ⅱ)在(Ⅰ)的条件下,证明:
;
(Ⅲ)若函数
与函数
的图像有且仅有一个公共点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33dcc4d56b82395325fa9971278d17d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f008cc24bc52c4a6c037bfd8ca29f7b4.png)
(Ⅰ)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)在(Ⅰ)的条件下,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30156c0c735108de438b7e74a853b1a6.png)
(Ⅲ)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a3348f6797d8efc6570bf28f3073f1d.png)
2017·安徽·一模 查看更多[3]
2017届安徽省江南十校高三3月联考数学(理)试卷(已下线)专题08 导数及其应用(模拟练)(已下线)5.2导数的运算(分层练习)-2022-2023学年高二数学同步精品课堂(沪教版2020选择性必修第二册)
更新时间:2017-03-19 17:11:55
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解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐1】设函数
,
,
.
(1)
时,求
在
处切线方程;
(2)若在y轴右侧,函数
图象恒不在函数
的图象下方,求实数a的取值范围;
(3)证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd61fe22aee4614fca8fa62941ba95be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a17af60d751eeb32312caca30aed317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若在y轴右侧,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f3a3fe446ace5cd48ed93a51cb0b65.png)
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【推荐2】已知函数
,
.
(Ⅰ)当
时,求函数
在点
处的切线方程;
(Ⅱ)当
时,讨论函数
的零点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70cd7701af6de6a5ae864283fccae051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
(Ⅰ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐3】已知函数
.
(1)若
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(2)若
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上恒成立,求实数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85fa25f70383588522e07a8922999d0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d91c5ebae385a1da8c5ccfc820603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/737c165baced95d7095d9f918a9cc110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f101244ff521f83d48192a7e81948d.png)
(1)讨论函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f101244ff521f83d48192a7e81948d.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若过原点可以作两条直线与函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知函数
.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f7f38c31b49fb3856a2b8e0b4fb2140.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65a40142c84be68ee2918c3a8303388c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2fdeba282b028321696be7f90f2cbfe.png)
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(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f5d9d06422a5a1a78ec0d893d1c6af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca58144698c1b69e291561d8cc15a3c.png)
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【推荐2】已知
,函数
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(1)讨论
的单调性;
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,若
恰有两个零点
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时,
,求实数
的取值范围.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863391cbd49f1e93302f593f32b1d2f5.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ad42ad55761dcbbf63f83622b63b05a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51303f001117b937812017c57401d7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b2153ec45a34b56ab1e3192cae9abd.png)
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d940ebdd2387c9543d3660ff79e14458.png)
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在点
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(2)若函数
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的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d940ebdd2387c9543d3660ff79e14458.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/125ddbc604047064126f986fd68d1852.png)
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解题方法
【推荐2】设函数
,
.
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(2)若
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