已知函数
.
(1)判断
的单调性并写出证明过程;
(2)当
时,关于x的方程
在区间
上有唯一实数解,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/458c6ac03943fafecc972712f01864c7.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31d113a273d12bc3b37d78c5a6f42b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
19-20高一上·福建龙岩·期末 查看更多[2]
更新时间:2020-02-19 22:36:05
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相似题推荐
解答题-问答题
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较难
(0.4)
名校
【推荐1】已知函数
(
,
为自然对数的底数).
(1)判断函数
的奇偶性;
(2)判断函数
单调性并证明;
(3)对任意
不等式
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2a4e7efe75ae19e6fd8a46c2f936f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(3)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/651c74a92508eb5a6af22bba18cae4e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
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(0.4)
名校
【推荐2】已知
(
,
).
(1)请用定义证明,函数
在
上单调递减,在
上单调递增;
(2)
(
),对任意
,
,总有
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036b37145fccf8e4ff211380f7f1abaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
(1)请用定义证明,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fdd4fad045ccf93e2fac095e5045557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e6bc753ce80cdc4083645b2a84d79f4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da57dab505040f097d7fd3504159b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c67a7e28dba059006021a2e2105f538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff565afbddafe8625ef376d7eb3fa649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f38406be4ead97a3480d51807727ca8.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
|
较难
(0.4)
解题方法
【推荐1】已知函数
是偶函数.
(1)求
的值;
(2)若
,求
的取值范围;
(3)设函数
,其中
.若函数
与
的图象有且只有一个交点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb165f6f9fe5908cb2ac7e9f988c8f92.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13319759ccc41989d123904c7c47c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd5988b69a792a8de6c513f03dd281d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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较难
(0.4)
【推荐2】已知函数
有两个零点.
(1)求
的取值范围;
(2)已知
图象与
图象关于
对称,证明:当
时,
.
(3)设
,
是两个零点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbd2d1925195b9845f60b5d1a29b6dd0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ccaa6e503b61e9ae78d8439cba2e328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab42740d8f095b5f7825d14c4c312096.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475c9073257b3d0760e2c6051a82d592.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】(1)已知
,求
的值;
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3937bc6ab4ad632bd834ed5fdc4b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc49bfd8389e96a5dff71c3b42b9dce.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f962a551abb5bb9410c2962b7d9495.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6369cd1db768436809404b1f3c4132c0.png)
您最近一年使用:0次