解题方法
1 . 直线族是指具有某种共同性质的直线的全体.如:方程中,当
取给定的实数时,表示一条直线;当
在实数范围内变化时,表示过点
的直线族(不含
轴).记直线族
(其中
)为
,直线族
(其中
)为
.
(1)分别判断点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266504a4bd910b292c74765dc9772f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f930d5d9e87b19a531a6d9a215d15a.png)
(2)对于给定的正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(3)直线族的包络被定义为这样一条曲线:直线族中的每一条直线都是该曲线上某点处的切线,且该曲线上每一点处的切线都是该直线族中的某条直线.求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f930d5d9e87b19a531a6d9a215d15a.png)
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解题方法
2 . 设
为坐标原点,定义非零向量
的“相伴函数”为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66655b7a6825b124ce596197bf2aa14.png)
,
称为函数
的“相伴向量”.
(1)记
的“相伴函数”为
,若方程
在区间
上有且仅有四个不同的实数解,求实数
的取值范围;
(2)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;
(3)已知点
,向量
的“相伴函数”
在
处的取值为
,在锐角
中,设角
的对边分别为
,且
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84dac41f87e939f6cc39f38dc59b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66655b7a6825b124ce596197bf2aa14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac200a9106723cd0d4749339ea677e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b84dac41f87e939f6cc39f38dc59b78d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66655b7a6825b124ce596197bf2aa14.png)
(1)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3fa5a2ec0f43acc49c5f7f848f212c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b5bd26c15e1719d02454d81b19178.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bccd6a6e85bdf500218a3e75b31f3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2d6bb01f1044358cc5fee441bc62489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ccc0712689ded371154a2ce015b13d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.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/d08e9f0a65862f8175c1a5484f71cf89.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25e326fdf9e5456f48e8a99a069f379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e723e57753f0a4fe1ef8ca1aee0e2117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11abb76da45ffa52b47c3a6b9a03ac7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e30c0a5c92f50dce1f7624709950ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ec18aa8ab6f4a4e70722e4df77c9c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c328175e1bd242bc2a0e170eb43503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1db906824e53395f016622f21efdb11.png)
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3 . 已知函数
(a为常数).
(1)若函数
是增函数,求a的取值范围;
(2)设函数
的两个极值点分别为
,
(
),求
的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213611317e843998c672932588cafe21.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e21ac584efecd770c2dd9d2e83803a.png)
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4 . 不等式
对满足
的一切实数m的取值都成立,求x的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc7775323a072962cd51fba2d6569a41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b6bd21a21a429c595ca5b1d94b567be.png)
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5 . 已知随机变量
和
的分布列如下,
与
的取值互不影响,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
0 | 1 | 0 | 1 | 2 | ||||
A.![]() ![]() |
B.存在![]() ![]() |
C.![]() |
D.当![]() ![]() |
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解题方法
6 . 已知
.当
,
时,
的取值范围为
,则
的一个取值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f0e855911b392669d0ef75556bbed8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0db2cae2e4d9c51adb60fe0a4da5caa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ee82af4668ec0a4ec3e2159561e122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/417ab20883d799aaf311371393fa7d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2023-05-11更新
|
312次组卷
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5卷引用:专题04 分类讨论型【讲】【通用版】
(已下线)专题04 分类讨论型【讲】【通用版】(已下线)专题04 分类讨论型【讲】【北京版】1(已下线)专题08 三角函数的图象与性质(1)-【寒假自学课】(苏教版2019)北京高一专题03三角函数(第三部分)北京市海淀区北京大学附属中学行知学院2022-2023学年高一下学期期中数学试题
7 . 如图,已知点
,直线
:
,
为平面上的动点,过点
作
的垂线,垂足为点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/18ec3fae-c086-4b29-8981-52939b561785.png?resizew=204)
(1)求动点
的轨迹
的方程;
(2)过轨迹
的准线与
轴的交点
作方向向量为
的直线
与轨迹
交于不同两点
、
,问是否存在实数
使得
?若存在,求出
的范围;若不存在,请说明理由;
(3)在问题(2)中,设线段
的垂直平分线与
轴的交点为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c32b7dd01131016c9f4feb1f96a482a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/392cc849237e68f0029a1baa5f7ea4ac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/10/18ec3fae-c086-4b29-8981-52939b561785.png?resizew=204)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdae78f202e6bf170d21e4393e85b911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7093538ecfb10a639b23863e7331a66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a601bb181415cf349821d76fc63668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在问题(2)中,设线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/483f57f6d51feaf38dc0d680cc3ec8b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
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2023-03-08更新
|
232次组卷
|
3卷引用:2.5 曲线与方程(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
(已下线)2.5 曲线与方程(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)上海市市西中学2022届高三上学期12月月考数学试题上海奉贤区致远高级中学2022-2023学年高二下学期第二次月考(5月)数学试题
名校
8 . 已知
,
分别为双曲线C的左、右焦点,点P是右支上一点,且
,设
,当双曲线C的离心率范围为
时,
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7285470bf401f5edaac641234ee6ff6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cb53cae121974f5b2a8728219c92f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7c28c50015480714816b8942d9ba949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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解题方法
9 . 设
,利用三角变换,估计
在
时的取值情况,猜想对x取一般值时
的取值范围是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daefb8bfca63d0f5e3e9a87ae92ccc7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17fb5433a783bf61acf957358a0d382d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ba6b6ee00c4b2763cb3fa59caa69f.png)
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2023-03-18更新
|
220次组卷
|
2卷引用:湖南省株洲市第二中学2023-2024学年高一上学期期末考试数学试题
名校
解题方法
10 . 已知向量
,函数
.
(1)求函数
的最大值及相应自变量的取值;
(2)在
中,角
的对边分别为
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca665b9a40e423b6720af4fcafd3e445.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bbadb801b4df353885a517d465a3929.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e30c0a5c92f50dce1f7624709950ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ec18aa8ab6f4a4e70722e4df77c9c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b5bc4f8bbfdccd3115b77c4aeb5d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
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2023-03-09更新
|
2204次组卷
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9卷引用:福建省建瓯市芝华中学2023-2024学年高一下学期第一次阶段考试数学试题
福建省建瓯市芝华中学2023-2024学年高一下学期第一次阶段考试数学试题福建省莆田第四中学2023-2024学年高一下学期第一次月考数学试卷重庆市铜梁区铜梁中学2021届高三上学期半期考试数学试题安徽省池州市贵池区2021-2022学年高一下学期期中数学试题湖南省常德市临澧县第一中学2022-2023学年高一下学期3月第一次阶段性考试数学试题天津市静海区第一中学2022-2023学年高一下学期3月学业能力调研数学试题内蒙古赤峰二中2022-2023学年高一下学期第一次月考数学试题(已下线)专题05 解三角形在几何与实际中的应用(2)-期中期末考点大串讲安徽省安庆市九一六学校2022-2023学年高一下学期第三次调研考试数学试题