求下列函数的定义域
(1)已知函数
定义域是
,求
的定义域.
(2)已知函数
定义域是
,求
的定义域.
(3)已知函数
定义域是
,求
的定义域.
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a92ba8b43bebdf7d6c40917f4d3e110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c3dd8fa2dc8c0c7e255bfb054ad34c.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be344d1925b25e44f3f8b34d2c193ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a92ba8b43bebdf7d6c40917f4d3e110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(3)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be344d1925b25e44f3f8b34d2c193ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a92ba8b43bebdf7d6c40917f4d3e110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c120f58a4d21c7677c979103f7e06dd.png)
19-20高一·全国·课后作业 查看更多[1]
(已下线)3.1.1+函数的概念第二课时-【新教材】人教A版(2019)高中数学必修第一册导学案
更新时间:2020-10-02 09:31:09
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相似题推荐
【推荐1】已知函数
的定义域是
,令
.
(1)写出
的定义域,并求
的最小值;
(2)若对于任意
的定义域中的实数
、
、
、
、
,
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c225236b4e06ce711ed6510c0a697430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c3204dcb6b697db534514558111f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4c99b78e7a0b31851bfa43a952ff15.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9b42973c53907f09f2de384c42fc5f.png)
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适中
(0.65)
解题方法
【推荐2】已知函数
的定义域是
,若对于任意
,都有
,且
时,有
.
(1)令
,求
的定义域
(2)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b9676b221e3f25206444afeb77c698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0c6f119137e1b6760d55956d99d963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(1)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa901949b8294aa95d3bec25b990543e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450868427afd4832db685d1d3516c0fc.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17af43cc460a6a7010d51a0c9403d67.png)
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解答题-问答题
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适中
(0.65)
名校
【推荐1】若奇函数
在定义域
上是减函数.
(1)求满足
的集合
;
(2)对(1)中的
,求函数
的定义域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddb4853500ef51da9770180388ac4bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2fc8dde5f01e4a39b3c01c5fa633b7.png)
(1)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dea232176d4fa5813c97918783ec44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)对(1)中的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cba651c5abb2789860275ecd92a9379.png)
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适中
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【推荐2】函数
,
且
,
.
求
的定义域,判断
奇偶性;
若
,求使得
成立的x的集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f69616a012f4328972b8c02beba1905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5d180c5d46f02475d083693c374144.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6ceaf64ea677fbad444dc1272a77fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6ceaf64ea677fbad444dc1272a77fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89e604dfc4e25f10c4759e3b2f5b806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec3bc3470ae6c7c07864e2bf1c41c62f.png)
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