已知函数
.
(1)设
,求函数
的极值;
(2)设
,求证:存在唯一的
,使得函数
的图象在点
处的切线
与函数
的图象也相切;
(3)设
,对于任意
,总存在
,使
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731136e5167c920ba9d7afa6647fa378.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f86768954ce483700ffa39b3eef884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75f702bfe1a376398286f1dc3daf8c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b27662c6958b9653cf4a7d740b65835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea1465e847cb7f9ed2531fbd45447cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80fff7c8c260edb3ce51f15f8d617633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63bb0cb91f7e3f5989927b293a7b7bfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33707800e0ae50480db077b8396e5fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2022-12-09 23:19:47
|
相似题推荐
解答题-证明题
|
困难
(0.15)
【推荐1】若函数
在
处取得极大值或极小值,则称
为函数
的极值点.设函数
.
(1)若函数
在
上无极值点,求
的取值范围;
(2)求证:对任意实数
,在函数
的图象上总存在两条切线相互平行;
(3)当
时,若函数
的图象上存在的两条平行切线之间的距离为4,问;这样的平行切线共有几组?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c989d6f66f22524d57e5028e56fce6d.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb01fcd15d3e2efc25004a325b6c1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(2)求证:对任意实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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解答题-证明题
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(0.15)
解题方法
【推荐2】已知函数
,
,
.
(1)当
时,若对任意
均有
成立,求实数k的取值范围;
(2)设直线
与曲线
和曲线
均相切,切点分别为
,
,其中
.
①求证:
;
②当
时,关于x的不等式
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7c4adef3485e8ac6e50d1926365327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9f049a5f960728c60a909821b2404b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c41009905994507dae7224c1c7f870b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212983432fdb9bb12719fc9be4b410d1.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.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/b45dddee525114c09ee0d1205aed6e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16552a1b3198b61e02f62592431cb583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d01c545537e6330e36a618706d7b92.png)
①求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6073fc52cd10164c1313dd96069b8d00.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6637636cfad409d24add56c4ce53c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68bb186b90ea5f2ae009d4aa98083393.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐3】已知函数
(
).
(1)若曲线
在点
处的切线与直线
垂直,求
的值与曲线在点
处的切线方程;
(2)若
,且当
时,
恒成立,求
的最大值.(
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9426847ed554c8387bdd9ec6f91535e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47e2364b2179201c1c9acbc31b6a9a4f.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0accaaa66de4dfd9ed8257fa942c2cff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c73e4aa3454443728cd5e6e24d9f839c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3368388525e30cb7179909b03184eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dac7e2b25a2ff2be5e6f72734d0027d.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
解题方法
【推荐1】已知函数
.
(1)当
时,求函数
的极值;
(2)若
,恒有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b555a708f0ead7f1bade6b35b4fd3363.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/18fe74b9c8adc168f21a36951d8711d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4995686cbf3d432e433b18c82dc94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.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2】设函数
.
(1)求
的极值;
(2)设
,若对任意的
,都有
成立,求实数
的取值范围;
(3)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b6c56aee4bb8a8131fd960415c745.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/deec3d4597e503c168b353d5913b28e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b767c33d36acbb9b5110ad0652237652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3541a861b438e309525f9f36f8ff0cf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e14206c7d228a7c2259a7b27da8813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c309bd401ea0f391b44c74a010442913.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3】已知函数
.
(1)当
时,讨论函数
的极值;
(2)已知
,函数
存在两个极值点
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13a663cd82360820f8a43ebe75810dea.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aeb9a94e392f6759b18abed89aacc5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7388c203c8340dc089e86bcfd1d6ab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.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/0a415767156945ea8ada9ed3756019fc.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1】已知函数f(x)=x2+2x﹣
(x+1),其中m∈R.
(1)当m>0时,求函数f(x)的单调区间;
(2)设
,若
,在(0,+∞)上恒成立,求实数m的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e1583dfc1ab54a5e0ae139f084664ab.png)
(1)当m>0时,求函数f(x)的单调区间;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8084bfe5efdb0818898330516a23cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea52675ed7be06255e25769d9f16e4e3.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】已知函数
,
.
(1)若
,证明:当
时,
;
(2)当
时,
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585e4a758a1d8109e5a703db1d709ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d61258bf4a557c8590869c2f4062aed2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d49ec515fb1fdc93ca4dda443326ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9093e67bb937df85711d3ab08fb0d2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2645398c3946e1a9282c219824f167d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84fc8115edb42500ed1c29e14eebd699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
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困难
(0.15)
名校
【推荐3】已知函数
.
(1)讨论函数的单调性;
(2)若
有两个不同的零点
,不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254c07941a6929e0afa818a7a2176657.png)
(1)讨论函数的单调性;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2217a4ab9fc9692c87c43ed4f02a240a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec97fb7fc62f40059a13e7e69ac40e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b8be675c8d80f2d734b32f929ec1493.png)
您最近一年使用:0次