1 . 已知函数
,
,
.
(1)
用
表示
中的最大者,记为
.若对任意的
,都有
,求实数
的最大值;
(2)设函数
,若方程
恰有两个不相等的实数根
,且
.求
的取值范围;并证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7573a8a4fbd7f6068ba397d6ffe5a7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdef85d50578d84a92ffcc754f7afddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edce103a652be8bf1c6bc9f6bc9e723d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531bcdb6324cb5a759301daddf9768c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c065dc2782f5e5a662df2ea357b9c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67481eef271b28f6372ee0e15d114819.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/789c88b7297cb6b7f0b42125ed3d650c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9bc88a686040c96fa391fb2b5884f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f716283ae2f873443e139f722cecb1b.png)
您最近一年使用:0次
名校
解题方法
2 . 定义在
上的函数
满足:对任意的
都有
,且当
时,
.
(1)判断
在
上的单调性并证明;
(2)求实数t的取值集合,使得关于x的不等式
在
上恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eeedfe06363c256f8fb8ecefb5eb84e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3a09e51fef904a5e8a013ea691d813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d4d176cd4cefa84cd1cec0163689703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7511e6ce72a5232820b7007f976be9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d655ee6d4c2285b6f59652360862d2.png)
(2)求实数t的取值集合,使得关于x的不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7537a57a681285c0ca0f99ab0774071e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eeedfe06363c256f8fb8ecefb5eb84e.png)
您最近一年使用:0次
2020-11-30更新
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900次组卷
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4卷引用:浙江省温州中学2020-2021学年高一上学期期中数学试题
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