设集合
,
.若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53186ebb24fe797a3d909e1f7db80370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52e0e50eca93364f70b6e0bd11f2e0ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
22-23高一上·上海浦东新·期中 查看更多[2]
更新时间:2022-11-07 09:51:17
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【推荐2】已知集合
.
(1)求集合
;
(2)若
,,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137e9816e2c62696eec08eee65206383.png)
(1)求集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca285999a2512c08e097bb68be6387c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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|
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【推荐2】已知函数
.
(1)求函数
的定义域;
(2)当
为何值时,等式
成立?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5f5f934b333ec687c652d9e92cc888.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eebff023ef1f8bcd2333c03cc01e1947.png)
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【推荐1】
解不等式
;
设a,b,
且不全相等,若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc7a65e9299f8671f8648441b784163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fc226ea6e882e60425e8144702c7e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bd551c51da714672cca3a78ec2647dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94714a3ef551b10fb054d3b225d4bdac.png)
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解题方法
【推荐2】已知函数
.
(1)当
,
时,求不等式
的解集;
(2)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cdf4ed9a483bb7c8e7c73086b1cb86.png)
,证明:
或
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c99988855b36c76287e2fa52649a37.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48adb8a59b5c02fad5eada1b35171cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a783088120d67cc98936081e80fb7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5e587ca42942c63cf7ba196a355a81.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cdf4ed9a483bb7c8e7c73086b1cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8407a79a35b42bd01409c85d2ccf2bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4ec854a0684a65bf7293abccb7b701f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a80102eea126cd7aabff15b132d94925.png)
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解题方法
【推荐3】已知函数
.
(1)当
时,解不等式
;
(2)设
,且
的最小值为t.若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c6e4556b2bc6e87c3d1b5a28c044577.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f61db73a5a9bce4ece8259a4c7d29376.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e14cd857ecb9810da61e12f2fcb50087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57f879f6e8df7d5fb261328806260b3.png)
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