已知函数
.
(1)讨论
的单调性;
(2)若
有两个极值点
、
,且不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ade64a1131abd3b93fd7fa42bd3bca9.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](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/85a93969738a9bb969f40cf587f1d5d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ec8a6e616b89e02df82992cb410fce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
更新时间:2021-01-09 21:56:47
|
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解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】设函数
.
(1)证明:当
时,
;
(2)若对任意的
,都有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d701f52be3d0fd066237511a3ef87a.png)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/598c228f462e592834b3ce5ed874fe9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3417699eb4a32521b7ff1f7b2a1d5f47.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1083be729ffc5c9c1847173b64bca1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30a09320d04c7c01fafff345afa812e2.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
|
适中
(0.65)
名校
解题方法
【推荐2】已知函数
.
(1)讨论函数
的单调性;
(2)若对任意的
,不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/133335e1830ddb5c147c4df381742add.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70690eedf6fb876238babb36932469c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐1】已知函数
(其中
,
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(1)若函数
存在极大值,且极大值不小于1,求a的取值范围;
(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eb309d10861e722e604e4b2879b439d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f7f23e7f20dd8bc65a4967cd306782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351be5371313be5ad69de2a49838b5c2.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐2】设
,
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(1)试讨论
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(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3dfa8a77c2946de4ea0ab9f3e9527b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f299f199d62e71675dd007ffb65424b.png)
(1)试讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f178c183462e21b4e159211243aee8b0.png)
您最近一年使用:0次