已知实数
,函数
.
(1)当
时,过原点的直线
与函数
相切,求直线
的方程;
(2)讨论方程
的实根的个数;
(3)若
有两个不等的实根
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/359094432b75e71ebcf0283776a4ee26.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)讨论方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b8da276e3d8eccba292d329122dca1.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b8da276e3d8eccba292d329122dca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4187c2c5f8176976865728ead5580518.png)
22-23高三上·上海徐汇·期中 查看更多[3]
上海市上海中学2023届高三上学期期中数学试题(已下线)高二下期中真题精选(压轴40题专练)-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)(已下线)核心考点09导数的应用(1)
更新时间:2022-11-12 16:06:12
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
解题方法
【推荐1】设函数
,
.
(1)当
时,过原点作
的切线,求切线方程;
(2)不等式
对于
恒成立,求
的取值范围;
(3)在(1)的条件下,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/812d581aaa8cd1441aa222cc12619b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0fcf22f5bba3fc4b8ba1b34c64c87d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(1)的条件下,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a513321a193961aa6b161c6b535fd508.png)
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解题方法
【推荐2】已知函数
,
,其中e=2.71828…是自然对数的底数.
(1)当
时,
①若曲线
在
处的切线恰好是直线
,求c的值;
②若
,方程
有正实数根,求c的取值范围.
(2)当
时,不等式
对于任意
恒成立,当c取得最大值时,求实数a的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bb7c885c4a0335317eecc65836f3aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06954164fa810069cb644f050b2d1341.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
①若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e16f89228eb1050bc4cc615c059b338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ec5ffe60f620f6f144221f81223ad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9016595e47500bab709cb9cbe41a5c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4318a47d7e83d587e74bab4d3d1f6883.png)
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(0.4)
名校
【推荐3】已知函数
的图象在点
处的切线在
轴上截距为
.
(1)求
的值;
(2)对任意
,不等式
恒成立,求自然数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f447524e3e7caf4361d693b97efc30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f84134092f31767ff9f7e8200a79fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c0aa2ef928b6e3341d0a0dc6d8055b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5734f0ac31ed9eace96085c3eaef88e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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较难
(0.4)
名校
解题方法
【推荐1】已知函数
.
![](https://img.xkw.com/dksih/QBM/2022/6/21/3006298036830208/3007458379792384/STEM/d374d095ef624b99ad0db955abf96ae9.png?resizew=256)
(1)若函数
在
处取得极值,求a的值;
(2)设直线
,将坐标平面分成Ⅰ,Ⅱ、Ⅲ、Ⅳ四个区域(不含边界),若函数
的图象恰好位于其中一个区域内,试判断其所在的区域,并求其对应的a的取值范围.
(3)试比较
与
的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc86e5d66377f206fccadcd3d1bae576.png)
![](https://img.xkw.com/dksih/QBM/2022/6/21/3006298036830208/3007458379792384/STEM/d374d095ef624b99ad0db955abf96ae9.png?resizew=256)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de7c19c8a68f58cbcb37e9140bcb469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed533703d6b7356347117baac0f128e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f2abb999bee661ea9205f53929dba24.png)
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【推荐2】已知函数
,
.
(1)若
存在零点,求a的取值范围;
(2)若
,
为
的零点,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e7009deb27743a0e51075f457881d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185472116a4292fdf2dddcf6402ee2ca.png)
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【推荐1】已知函数
.
(1)若曲线
的切线方程为
,求实数
的值;
(2)若函数
在区间
上有两个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db43120cc632891762bf783201316f6.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4022404158a19da85fe55773ebd331a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fd03aca3e97224a38d82d2ddd0dd364.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26c416363ab2a9ed000b429540db55e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知函数
,
.
(1)当
时,判断
的零点个数;
(2)若
恒成立,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d362b385e151c4106c3f835fc16550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f7f23e7f20dd8bc65a4967cd306782.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32990ccffd5c1b7d066b0d4d2b8c98c8.png)
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