设函数
,其中
.
(1)当
时,求
的极大值;
(2)若不等式
在区间
上恒成立,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844b329c46208d8c01e23fd1e5a8a036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26927f1f0be044942dfce30c3607158.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821fa0301d20076ad2e541f8c4a86231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4cb72814fc154c01ff58d865e8a9b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67df20557a4750adac9cfc34794a2fa9.png)
更新时间:2022-10-03 11:53:43
|
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】直线
与函数
的图象有相异的三个公共点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46111e4d12c21798aa213c0d7804c2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df77cf05f8e882c35f1156dc54a5e090.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】设函数
,其中实数
满足
.
(1)若
且
在
上单调递增,求
的取值范围;
(2)若
,求函数
的极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b0912a72d6287d457f78dcb6cf4233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f318dae61e291e3c28eff545f44787.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7242b2ab643f9470da77e29d043b893.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e353f56a059621103adea74a914244d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐3】设函数
,其中
.
(1)若
时,求函数
的极大值;
(2)讨论函数
的单调性;
(3)对任意
,总存在
,使
成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b56e237ebf29ebb469a29c1502ff5fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60af72636b2895622ab0ec145a92b078.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60af72636b2895622ab0ec145a92b078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c0c19ae1918729b016a978eebe64b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671d8b20ff777dc93ceefd694b78a76c.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知函数
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad04b9df1032e5d2953e45d238da08d.png)
(1)证明:
;
(2)若
在
恒成立,求
的最小值..
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3c546f85a568aa9cd7985b6bfe32af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3038d4728f959a8efedc2592e4a4b5fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad04b9df1032e5d2953e45d238da08d.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5887d0b4a9197eeb67d157fa537db7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
您最近一年使用:0次
解答题
|
适中
(0.65)
【推荐2】已知
.
(1)当
时,①
在
处的切线方程;②当
时,求证:
.
(2)若存在
,使得
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bcdaf2d1cce51739042b4d288e10476.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302337058242c7b78e3eb4ac7210b7ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fef9380b394a4bd829c83a5a5b4c859.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a154aa77357cb73cbcd37275d873a324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac2cf7611fe0dcb43c208591b92bf7a4.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952c63e17684725850b58abcac91e6e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13bdea0d11b9846a7eb3ca05c3c61718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次