解题方法
1 . 已知
(
且
)是R上的奇函数,且
.
(1)求
的解析式;
(2)若关于x的方程
在区间
内只有一个解,求m的取值集合;
(3)设
,记
,是否存在正整数n,使不得式
对一切
均成立?若存在,求出所有n的值,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec55e2299b1886acb0c3ec1a6aec31e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c85886dad735d5b8048ba3d3eab4ce4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545c552efb86f80818df9932431cfe6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304226ca50149b49702928e44d565964.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e108638ae5a58146db45291064fdea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25187c7511afa2193ff7e162f3f68eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db2fcb54a23ea72a13be064cc26e571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f0ca536621ec8db02707ba65917029.png)
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2 . 已知函数
的极小值为
.
(1)求实数k的值;
(2)令
,当
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/507977184a5bc7fd9823f5f7907e59af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30d314a642667fef559032264647366.png)
(1)求实数k的值;
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf26690b965cdfd97ad9c59a29166e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e674df287bbd2d072d58924092e616d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d46e4de8092609c7935926575fc05bb.png)
您最近一年使用:0次