已知函数
.
(1)讨论
的单调性;
(2)若
,
时,
恒成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02813d4b53c92e734b1bbf64246273ba.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839fc05d3722839a1abb72d33a1a28b9.png)
更新时间:2023-02-25 08:28:21
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解答题-证明题
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适中
(0.65)
名校
解题方法
【推荐1】已知函数
.
(1)讨论函数
的单调性
(2)当
时,证明:
;
(3)若关于
的不等式
恒成立,求整数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3afbc5bc72f59c051190c9f85854691e.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c2e0bb6d63b7bcaee92a470d58cc399.png)
(3)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d66764c9a68b01177781c1061f4901a7.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
【推荐2】已知函数
,
.
(1)若
在点
处的切线与
在点
处的切线互相平行,求实数a的值;
(2)若对
,
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f133afb941e4ae85906b0ebae77d71dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69bc9d0b24b2e45894f2ff98a90896c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a03a381e5f366074d142b39e0089be6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a020607e7478fc091525240b0580b37.png)
(2)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acda6b6464db27e1ec18a1522406d2.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐1】已知函数
.
(1)当
时,讨论
的单调性;
(2)若函数
在
(
为自然对数的底数)上有零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23efa5abd91236c9820d0f3beda6ef29.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7754cc9374c8193dadb6875fb8a3fefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】已知函数
,讨论
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8182539244484f345e69d45b8f4e8f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次