1 . 若函数
在
上恰好存在2个不同的
满足
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb53a905092fc4d6c273211cbad1a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57911712f67892eeaa50a1c7d55a6ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d745d972cade6421f3b91fd9569202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
2 . 已知函数
在区间
上单调,且在区间
内恰好取得一次最大值2,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9924b1135c072baab265ff1722cd97ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e89fdef3da147512c195eacaf87d37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bccd6a6e85bdf500218a3e75b31f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
您最近一年使用:0次
2023-01-12更新
|
637次组卷
|
3卷引用:广西壮族自治区钦州市浦北县浦北中学2023-2024学年高一下学期3月月考数学试题
名校
解题方法
3 . 设
为坐标原点,定义非零向量
的“相伴函数”为
,向量
称为函数
的“相伴向量”.记平面内所有向量的“相伴函数”构成的集合为
.
(1)设函数
,求证:
;
(2)记
的“相伴函数”为
,若函数
,
与直线
有且仅有四个不同的交点,求实数
的取值范围;
(3)已知点
满足
,向量
的“相伴函数”
在
处取得最大值.当点
运动时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074d049ba730bc0a038a076d5eb10035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2a70e42d715fcd501f6b864c20605f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074d049ba730bc0a038a076d5eb10035.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abc54bc56c16baa3643686b85a6130e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95a5f3ef304ee910dc162c999672c66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfc9270aef191b473d38ffe9108b339.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e936e203fb157e941e926a8cf8a71980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b4193e142dc3c2a9645ecef60fbe2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37440b57fe2ffc13f2a873e38f55d29b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead6a3dbd03539ef5e0807be57bb1e17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6bb01f1044358cc5fee441bc62489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8114228fbad4cc22f48cee4a2ce8a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6799b234237333b0efa331d98f0374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e0e24323fe73e5d9fc6136219306da.png)
您最近一年使用:0次
2021-09-12更新
|
237次组卷
|
2卷引用:广西壮族自治区百色市德保县德保高中2023-2024学年高一下学期月考(一)(3月)数学试题