已知函数
.
(1)当
时,求
在
处的切线方程;
(2)若函数
有两个不同的极值点
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b173dc588e88a3ca303a94bfa760967.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](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/1b64b1a6ad90a44dd02e91a62f2c0364.png)
2023·四川南充·一模 查看更多[3]
更新时间:2022-12-16 21:56:29
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相似题推荐
解答题-问答题
|
困难
(0.15)
名校
【推荐1】已知函数
.
(1)当
时,讨论函数
的单调性;
(2)若曲线
在点
处的切线
与
有且只有一个公共点,求正数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a842ac82bfc534902bc9ade470e7cd7.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd817a1014876a72ad1971548ed6f52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
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困难
(0.15)
【推荐2】定义平面曲线的法线如下:经过平面曲线
上一点
,且与曲线
在点
处的切线垂直的直线称为曲线
在点
处的法线.设点
为抛物线
上一点.
(1)求抛物线
在点
处的切线的方程(结果不含
);
(2)求抛物线
在点
处的法线被抛物线
截得的弦长
的最小值,并求此时点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b6669aa95354e3fb24d9b5e66b1f5b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(2)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
解答题-证明题
|
困难
(0.15)
解题方法
【推荐1】已知函数
,
,
是自然对数的底数.
(1)求函数
的最小值;
(2)若
在
上恒成立,求实数
的值;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92c5019dca8a087a4a7f4a8e929147ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4dc5ac45016b772f5c5b07a53677e50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a2c01ac2a7f6ad7e03cb7a61daefab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969b216f0b195af1f27d38c56617ea66.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
解题方法
【推荐2】设函数
.
(1)求
的单调区间;
(2)设
,且
有两个极值点
其中
,求
的最小值;
(3)证明:
>
(n∈N*,n≥2).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f1bbf403a59dabd27fea4fa107f021.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c094cf02ba4b772daa36a0732926f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c58cc80f792a9262c4da33fabd21e95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ec806cd13422b3dc145f07d77622b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008735117b891a40954cbc319bd770bb.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81bba964801a47ba3a02a1b6e2f428e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/718b8b9e19c7d61d6718934f6390c238.png)
您最近一年使用:0次