1 . 已知函数
.
(1)写出
的定义域并判断
的奇偶性;
(2)证明:
在
是单调递减;
(3)讨论
的实数根的情况.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1865e72c14aebf1a170c6ad1667ee0.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
(3)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beaf743093c9bafdfb1e0ef87b7c2984.png)
您最近一年使用:0次
2022-06-27更新
|
940次组卷
|
3卷引用:2022年湖南省学业水平考试高二数学试题
20-21高三上·浙江·阶段练习
名校
2 . 已知函数
,函数
的零点构成的集合为
,函数
的零点构成的集合为
,若
,则
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9f2cd1a3786d9c1344882c91b6d7db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87830bd4efb3b6006a9440cca476ff6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a70d32c64918aa4d1d9d3ce0bdbf7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd1f0ace9ca0b79929e73af6c201c2e.png)
您最近一年使用:0次