求下列函数的定义域,并用区间表示:
(1)函数
;
(2)函数
.
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d64742cee425ca7b5885417c046eca0.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d7f06b95ede4afed2ad8bb26d923e5.png)
2017高一·全国·课后作业 查看更多[2]
更新时间:2017-11-27 15:22:47
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相似题推荐
解答题-问答题
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解题方法
【推荐1】已知函数
.
(1)求
的定义域、值域;
(2)判断并证明函数
在
的单调性;
(3)若
时函数
的最大值与最小值的差为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ba67c0c5097fd08ec038a339b3ecf2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)判断并证明函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdfed8d6862125dc1fecfce0322a750.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08696f29924fad88f81c45c11149917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-问答题
|
较易
(0.85)
名校
【推荐2】设函数
的定义域为集合
,集合
,
.
(1)求集合
,
,
;
(2)设
,
,且
是
的必要不充分条件,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5adfce08a51c0387d0608d3aaf632323.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f699620967da68fc98032d5986b9b58c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17145bf3ed71bc67362b7baff1f69aee.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc11e9183ffccd297df4a1c18618bae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19afc2adcdd04bbeda888dcd53822ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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