已知函数
.
(1)当
时,判断
在
的单调性;
(2)设
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3bc6c761b979fe5d96e7f8fc8a113b0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6335e7579ada89f23c50c623874bf06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e11d08d192f91827fe25df5567c60dce.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65b2d396592521bd5df10c84fd5d72eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7897929fbbea6fa808e87efb669d5af3.png)
更新时间:2022-10-20 13:18:53
|
相似题推荐
解答题-证明题
|
困难
(0.15)
【推荐1】已知函数
.
(1)当
时,求证:
;
(2)设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f3e5ffdcb4cb07b8f26e816531e68b.png)
,且
有两个不同的零点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
,
①求实数
的取值范围; ②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e96546b3259afe4add331673fb835c3.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01d07f3a82196cabb98a2ab98686eb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bdd6f6874dfe57681ba240a9302d6ab.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f3e5ffdcb4cb07b8f26e816531e68b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1a1a5f2533b8ea54b7022383f875666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d3c0e7508ff7fd36faba07a0aa41ff.png)
①求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7ec808ad60dbf016632ec816eaca1df.png)
您最近一年使用:0次
解答题-证明题
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困难
(0.15)
名校
【推荐2】已知函数
.
(1)若
,讨论
的单调性;
(2)若方程
有两个不同的实数根
.
(i)求
的取值范围;
(ii)若
,求证:
. (参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb05329f5467b768e67211e433dc248.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16cf3b13382a1f1dfeb7deebb3f5e925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40453902bac11bb20c45456acee377de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3fe8ad699c43bc6a456367aa2a8d2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6934fa4fa4cfe56d5f4b15510a7086b.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐1】已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(1)当
时,求函数
的单调区间;
(2)设函数
,
,若对于曲线
上的任意点
,在曲线
上仅存在唯一的点
(异于点
),使曲线
在
,
处的切线的交点在
轴上,求正整数
的最小值.
(参考数据:
,
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d72c209a41cfdf3204f83982b21e8dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e22112ad03cddf33b87c22497a502a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9d9ab0936d3d53c2447ca5c3745ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6334e30eb6ff2f4ceff9e695c1d1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16552a1b3198b61e02f62592431cb583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209c4739ab13d678d47d8a4d4d7c94f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ccc7a1115f339befede8648ddb09648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f0f14e23582cef2d242b86f0710d13b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6467df2da947cabee499aee4ffb4ca18.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2】已知函数
.
(1)当
时,求函数
的极值;
(2)若关于x的方程
在
无实数解,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3021befc8618d74375b2eadba940f07c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efb95fe8ab68d221c70acdee5451cc73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5d6243e93c41978871cb23d8e66148d.png)
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解答题-问答题
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(0.15)
名校
解题方法
【推荐1】已知数列
满足:
,
,设数列
的前
项和为
.证明:
(Ⅰ)
;
(Ⅱ)
;
(Ⅲ)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3082aa4390cb5575e6030d521e3e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828f0bb24057d445aa3a53d6508b5c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41cf1da18d91f7c98086553d157d1a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96b250e4276bf3f328b03a66765541f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
(Ⅰ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2051fb5ef26cc3c0dd7fc67a7f6f643.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324992082d45e3e4a03d3553e87037e9.png)
(Ⅲ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db1c8320901ed54f154c4475bc75cbe9.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】已知函数
的最小值为
.
(1)求实数
的值;
(2)若
有两个不同的实数根
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49640d356411eb3e1d51f68deddbe469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88cfacc95887672ab01766ea5a703332.png)
您最近一年使用:0次