已知函数
为正常数.
(1)若
,且
,求函数
的单调增区间;
(2)在(1)中当
时,函数
的图象上任意不同的两点
,线段
的中点为
,记为
,试证明:
.
(3)若
,且对任意的
,
,都有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a280ae79e3a2e164dd23a6883a9596d3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7123126eb6f4df30e3cff0e028f4bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44cd6e326cc3d370fe5764f32aeca79a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在(1)中当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b77e6b117cf9d90d7d31d7ebde3dbf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c679fd44944b779faadacc21d70a03f.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda826a0b75043e7d4b4d7b61c7e6024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764f981a79d9850e2fd2afb79940da50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0d0ad7457f0a71b6b624fab81338c1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2017-06-14 09:00:08
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】已知函数
.
(Ⅰ)求
时,函数
的单调区间及在点
处的切线方程;
(Ⅱ)函数
存在最大值,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b95e9e3e4eac2f3bb889a3bdd9a917.png)
(Ⅰ)求
![](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)
(Ⅱ)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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(0.4)
【推荐2】设
.
(1)讨论
在
上的单调性;
(2)令
,试证明
在
上有且仅有三个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf5d81f5b4434593357fa98d973e18c.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9845c78cb0cdedddefb2c0309a86e8.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e92096232a5eca993aef986a691824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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解答题-问答题
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(0.4)
【推荐3】已知函数
,
.
(1)若
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的单调性;
(2)若当
时,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9601e38d89b0101d58aac92a1433dded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752455799e49f846e2601304fec5d3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.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
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较难
(0.4)
解题方法
【推荐1】已知函数
,
.
(1)当
时,求证:
,均有
;
(2)当
时,
恒成立,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ef6e9eeec8cb282b7bcae1b6ef140f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ad15d55077899eaf489e35669876e4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a68ec001145a37fb7cc4d9632e11870.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8c164755dc2d7cff80fb4c9cffc9be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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较难
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名校
【推荐2】已知函数
.
(1)设
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc76acb07c3158f9cba213a80b53b230.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43db00e106c7d08a76a7ba71ca5e63d1.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d0588454ec8b64bf86578fb90b39e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd93af115b632bdc8508e7b97569897a.png)
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较难
(0.4)
【推荐3】已知函数
,
.
(1)判断函数
的单调性;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f0f82d86e0294a5dbeecce7abfaa032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3311d17fa5bf560a13c02991a28c7130.png)
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【推荐1】设函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e729f17846ca23b0e4a20a58cfc025b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(1)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037970f8b75b1da6b5c646680c7291b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44f5aa2b07d08fb56202c814ccb202c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d92a82511b0b1055156fbe0678085e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
您最近一年使用:0次
解答题-问答题
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较难
(0.4)
名校
解题方法
【推荐2】设函数
.
(1)求函数
的最小值;
(2)记
的最小值为
,已知函数
,若对任意
,都有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a43cb93b1c09c53ec5f411f7a21fc1.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344695a3dec066c2391302e68fc4392a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58e82c4003d20b36777f7aea584e3dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0879734ee766cb630cfeb3f25fea7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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