设函数
,
.
(1)若函数
图象恰与函数
图象相切,求实数
的值;
(2)若函数
有两个极值点
,
,设点
,
,证明:
、
两点连线的斜率
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/603589540f7897790f99a8d75fd725f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5602d1637fb9dab9ef09ae6030b4ed7d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10bb9a8107bd9c4f083578f473b9a99.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/67a3f0d7706dd7b38b770656f6937776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/210304b08abfee9be4e4d3b01e323a66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b387bb66f74a73d9f08c79e77a4df771.png)
更新时间:2023-03-09 16:10:56
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较难
(0.4)
【推荐1】已知函数
,曲线
在
处的切线方程为
.
(Ⅰ)求
,
的值;
(Ⅱ)求函数
在
上的最大值;
(Ⅲ)证明:当
时,
.
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/44669f053c704fbcac92d356dae98a54.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/dd27c06c3f46457f97b5bab047cd4ef8.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/33c9edee942049808e3408892f8d6e28.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/7115aa03bbee4c429fae9b37dfa5f0cb.png)
(Ⅰ)求
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/9e609ecb908a47189eee59376e942428.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/b86b1fa7e750433781613bbb174d51cd.png)
(Ⅱ)求函数
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/787922642fa142b897cb23b7c7482b9d.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/81b2b9f362754ee6aad8d194b49c0306.png)
(Ⅲ)证明:当
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/182c51bbe2794216b3a03da021069515.png)
![](https://img.xkw.com/dksih/QBM/2016/3/28/1572558910357504/1572558916689920/STEM/021f5c05826e4f82a747f2e05397b696.png)
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名校
【推荐2】已知函数
的图象在
处的切线方程为
.
(1)求
的解析式;
(2)若关于
的方程
在
上有解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfecb77e6f78d13ef441f262873cee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94376e3e25de7fa4e506d40446b22ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1582637401c521626dc6f66cfdb01370.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc8ca8ea93e01e9e0f0c3e4aa5425448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6330540758a21f46fc7a6d1e6328d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
【推荐3】已知函数
.
(1)若
轴为曲线
的切线,试求实数
的值;
(2)已知
,若对任意实数
,均有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac942b62d8373a6d7e43437c8e3a46a4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa15c1082bca46a6ddbadd87e96c4075.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b398b8c19531aeb65a2f887dc05cf5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-证明题
|
较难
(0.4)
【推荐1】定义:若函数
与
的图象在
上有且仅有一个交点,则称函数
与
在
上单交,此交点被称为“单交点”.已知函数
,
,
.
(1)讨论函数
的单调性;
(2)当
时,
(i)求证:函数
与
在
上存在“单交点”
;
(ⅱ)对于(i)中的正数
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3eb5935678e432e6f1f3180bfdb3175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3eb5935678e432e6f1f3180bfdb3175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ba24231723af1ea3d94be78053998f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e19cdacdd4a47291e4621a8c167efc.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89e455f4e6c97270bd28f207b89df5fa.png)
(i)求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
(ⅱ)对于(i)中的正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e33f6cdfee603b548e158bcb1f82df.png)
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【推荐2】已知函数
在
处的切线的斜率为1.
(1)求
的最大值;
(2)证明:
;
(3)设
,若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01edd5a9e2b0de35bc4ca82668325b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c98a7f3a8bf384b1dfc1d34aebd46d2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893170e2920b75cb47aeba0c069c904e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf810234da166bc6e724f78beae41180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b4955c5adc717b7f6f0b975e0724ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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【推荐3】已知函数
.
(1)求
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(2)若
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上不单调,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29400b6534c5e8b29ef85e5bae1a5ac.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e364459b2bd18ea052c3443006d3845.png)
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较难
(0.4)
名校
【推荐1】已知函数
,其中
.
(1)若函数
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有极值点,求实数
的取值范围;
(2)若
,讨论函数
在
上零点的个数.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d914f739d0635a04e342814fddfbd261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55cfcbb5c5950e18a8452b38bb17036.png)
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【推荐2】已知函数
.
(1)讨论函数
的单调性;
(2)设
,
是函数
的两个极值点,若
,且
恒成立,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d4fdb5441a689116d81b0e6684c7a.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3b4ebdb7c815fc81182a86a3aab373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/317f79669ac15380232b535323e0bbe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐3】已知函数
.
(1)若
有3个极值点,求
的取值范围;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8eff3dc14de8ff5939ff18eec8a5d5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d95df35db9ff7fde786093b08c257835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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