解题方法
1 . 复数
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4229575efc87b22e324c436f57a489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545141bbe7cc66d18946a129179d8df1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知平面
,直线
满足
,
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539a38ada26356d73024fb8533449c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209323a7a4d015f7e570ec578c1731f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b6e422b2e6f6dada4d8c369559a077.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5986f2991d45fbf3578f08f27d9fd7e.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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3 . 一曲线族的包络线(Envelope)是这样的曲线:该曲线不包含于曲线族中,但过该曲线上的每一点,都有曲线族中的一条曲线与它在这点处相切.下列说法正确的是( )
A.若圆![]() ![]() ![]() |
B.若曲线![]() ![]() ![]() ![]() |
C.曲线![]() ![]() ![]() ![]() |
D.若两曲线![]() ![]() ![]() ![]() |
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4 . 已知函数
.若函数
的图像的任意一条对称轴与
轴交点的横坐标都不属于区间
,则
的取值可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c34fba5714eb5e1fec40962a7d7f078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9bbf6e7847f96706b54f079716bf23.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
5 . 已知集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c230a9b88587295233fbaa1bd0e0e2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f3115a9dec27b623417b0502f05a7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-25更新
|
354次组卷
|
2卷引用:湖北省咸宁市2023届高三押题调研数学试题
名校
解题方法
6 . 已知中心在原点的椭圆与双曲线有公共焦点,左右焦点分别为
,且两条曲线在第一象限的交点为
,
是以
为底边的等腰三角形,若
,椭圆与双曲线的离心率分别为
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/303742cc3b9273e1206b64d63a126065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f994a876391534efe497dc115a53e3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec2616d77625a3cb2c4129faa54035c8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-25更新
|
1370次组卷
|
7卷引用:湖北省咸宁市2023届高三押题调研数学试题
湖北省咸宁市2023届高三押题调研数学试题(已下线)重难专攻(八)圆锥曲线中的最值(范围)问题(B素养提升卷)(已下线)考点13 离心率的求解与范围(最值) 2024届高考数学考点总动员(已下线)专题07 双曲线的压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)(已下线)专题16 妙解离心率问题(12大核心考点)(讲义) 山东省青岛第五十八中学2023-2024学年高二上学期阶段性测试(第二次月考)数学试卷(已下线)第10题 共焦点的椭圆离心率问题(压轴小题)
7 . 已知函数
,其中
.
(1)讨论函数
的单调性;
(2)若函数
存在三个零点
、
、
(其中
),证明:
(i)若
,函数
,使得
;
(ii)若
,则
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/006a594b3e5d378c0a7d5596ece15f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73254f32b6da29ecc32df2e9f87a4c97.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
(i)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80becafafe8a4d59226794e7a489cde2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4acc51d5cbe83825a53e2e578d37477.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b5924b77ed3a9154af682a8340f9dbc.png)
您最近一年使用:0次
8 . 英国数学家牛顿在17世纪给出一种求方程近似根的方法一Newton-Raphson method译为牛顿-拉夫森法.做法如下:设
是
的根,选取
作为
的初始近似值,过点
作曲线
的切线
:
,则
与
轴交点的横坐标为
,称
是
的一次近似值;重复以上过程,得
的近似值序列,其中
,称
是
的
次近似值.运用上述方法,并规定初始近似值不得超过零点大小,则函数
的零点一次近似值为( )(精确到小数点后3位,参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b7bff9b2431134f7683a9cc4e68acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8559f5db9b978cb2bd290dbce7268629.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77cd7115adb04696d8cbb90485f02e85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef3c138da5e3c26c249202f09341b38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1434ce938c211efb4bc7483f3e3e95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3002f56900c2924bfd79fc3865b0a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0876215b2fd463d151523cd3c6b447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85bcb6b2ee7639636b9074e00464ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b54f9d92dbf8bb7ea66660fb453357a3.png)
A.2.207 | B.2.208 | C.2.205 | D.2.204 |
您最近一年使用:0次
名校
解题方法
9 . 在
中,角
所对的边分别为
,满足
,
.
(1)证明:
外接圆的半径为
;
(2)若
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f1810df431195da7c6250e8d57088f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03a186b52217bc17f2bd3e829f087904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
2023-05-25更新
|
638次组卷
|
3卷引用:湖北省咸宁市2023届高三押题调研数学试题
解题方法
10 . 已知
是平面向量,
,若非零向量
满足
,向量
满足
,则
的轨迹方程为__________ ;
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d10fedf17959eed50bf24efd7a03793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fbe2e050e4d39271f9571e01c2d0fb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0f1b53b5dfa43bf8dc8e19398494dee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7826ae3087f08bcdacda3e49462ef53e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc23a04cdac6439ea170e799f1c1df5.png)
您最近一年使用:0次