1 . 已知O为坐标原点,椭圆C:
的上、下顶点为A、B,椭圆上的点P位于第二象限,直线PA、PB、PO的斜率分别为
,且
.
(1)求椭圆C的标准方程;
(2)过原点O分别作直线PA、PB的平行线与椭圆相交,得到四个交点,将这四个交点依次连接构成一个四边形,则此四边形的面积是否为定值?若为定值,请求出该定值;否则,请求出其取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b24214f111f7c6d2b64e53ad970438b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca1726d463bd741c904abd9b6589056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66cbe6dfc817c97da126729e27978b42.png)
(1)求椭圆C的标准方程;
(2)过原点O分别作直线PA、PB的平行线与椭圆相交,得到四个交点,将这四个交点依次连接构成一个四边形,则此四边形的面积是否为定值?若为定值,请求出该定值;否则,请求出其取值范围.
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4卷引用:重庆市第十一中学校2023-2024学年高三第九次质量检测数学试题
重庆市第十一中学校2023-2024学年高三第九次质量检测数学试题湖南省常德市2024届高三下学期3月模拟考试数学试题 (已下线)数学(九省新高考新结构卷03)(已下线)第30题 几何分析曲径通幽,代数推演水到渠成(优质好题一题多解)
2 . 从圆
上任取一点
向
轴作垂线段
为垂足.当点
在圆上运动时,线段
的中点
的轨迹为曲线
(当
为
轴上的点时,规定
与
重合).
(1)求
的方程,并说明曲线
的类型;
(2)若
与
轴和
轴的交点分别为
(
在
左侧;
在
下侧),点
在线段
上,过点
且平行于
的直线
交
于点
(异于
),交
轴于点
,直线
交
于点
(异于点
,直线
交
轴于点
.
从下列两个问题中选择一个进行作答:
①证明:
;
②
与
的面积是否相等?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d0040699fc8740f8f579aa65c9182c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27a88ecd784a5b166031b7b3456ee64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34876d748f30fa4fc2eb6a686b5ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be99fa94a1f3e4964fcc13a14fab9ba5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.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/a49c706ba8a6ffcc36c3ca65ba6d73f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1ec05e3cec27677ded7b4aecaa62d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0d70af9b2290090df70c33b6487bca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bf58e5fea1189b33cf55d86335452f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
从下列两个问题中选择一个进行作答:
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0532603fe9d208ee83b0c6924edcb463.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcbf4178c8ed5827e2c88636f82bf42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5437d5aec66b82c4b24ecad191ef.png)
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2卷引用:重庆市第八中学2024届高三下学期3月适应性月考卷(六)数学试题
3 . 在二维空间即平面上点的坐标可用两个有序数组
表示,在三维空间中点的坐标可用三个有序数组
表示,一般地在
维空间中点A的坐标可用n个有序数组
表示,并定义n维空间中两点
,
间的“距离”
.
(1)若
,
,求
;
(2)设集合
.元素个数为2的集合M为
的子集,且满足对于任意
,都存在唯一的
使得
,则称M为“
的优集”.证明:“
的优集”M存在,且M中两不同点的“距离”是7.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b525d8c768efd801ab58bc4c0da9221e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3957b7fdba61064a1d8990d880894678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97de4e0337716e1d89eb1a6cfd7b8335.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2c6b5e2477070d935260db8c0f4731b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9621fabd914377b322701e2689cc912c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8f111ae47bbcf70999e41743385cdc5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8eaa058fb6ca849782169fc1d94f99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4d59b92bf91197446d86893fb9a0c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de67567843bcb8dc4cd20f44e1558f9c.png)
(2)设集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646e73be3272a6edfed21c3ecdc48cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5b75656c76ce2e9ac0f0c213a6cbe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24fd7b7df5b43336d3219f16b3ce6733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f80fced6fa7e6adc72c80228443885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9591c25ee33bd1cb77bb0df04b531fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5b75656c76ce2e9ac0f0c213a6cbe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5b75656c76ce2e9ac0f0c213a6cbe9.png)
您最近一年使用:0次
4 . 记数列
的前n项和为
,则下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
A.若存在![]() ![]() ![]() ![]() |
B.若存在![]() ![]() ![]() ![]() |
C.若对任意![]() ![]() ![]() ![]() |
D.若对任意![]() ![]() ![]() ![]() |
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名校
解题方法
5 . 设
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f252adc85a50e2d2ee64869dfdefee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/744f98c50d9b454863694d9e856ef21a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb761bc720dc2f3f35cc128918cf2bd.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3卷引用:重庆市2024届高三高考模拟调研卷(六)数学试题
名校
解题方法
6 . 某网络销售平台每月进行一次经营状况调查,调查结果为销路好或销路差.历史数据表明:如果本月销路好,那么下个月继续保持这种状态的概率为
;如果本月销路差,那么下个月变好的概率为
.用
分别表示第
个月销路好和销路差的概率.
(1)若
,求
,
,并证明
是等比数列;
(2)证明:无论第一个月销路好还是销路差,经过较长时间的销售之后,销路好的概率都会趋近于常数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ec818fc0754296163206e1e8870f9e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29be23f689eb01e57963495377501257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7bc9573b3a8758511c63731db18183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542d885d0bc529bbb9eb9091a36c0c75.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/b765cb22a2ddfefc74dc06d4fd228954.png)
(2)证明:无论第一个月销路好还是销路差,经过较长时间的销售之后,销路好的概率都会趋近于常数.
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2卷引用:重庆市第八中学2024届高三下学期3月适应性月考卷(六)数学试题
名校
解题方法
7 . 如图,在三棱锥中,
,
,
,二面角
的大小为
,则三棱锥
的外接球表面积为
您最近一年使用:0次
8 . 设数列
满足
(
且
),
是数列
的前
项和,且
,
,数列
的前
项和为
,且
.则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f10e7730bce4aaff633735148c5c31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94350a1a847c7b597fb15c01b1f6dca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30da7deec243d7fbafafdee9e0758a9.png)
A.![]() | B.数列![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
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9 . 设函数
,下面四个结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9198983bbdce6c263c5c74c21de43cd8.png)
A.函数在![]() |
B.函数![]() |
C.函数的值域为![]() |
D.对任意两个不相等的正实数![]() ![]() ![]() |
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10 . 已知函数
.
(1)求曲线
点
处的切线方程;
(2)若
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0cdda241b1cb75a1574e30d74028afd.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eded821494c706422354dd910a25b1e6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a053e6f5eafc28519c4aa2d8de17be20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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|
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3卷引用:重庆市第八中学2024届高三下学期3月适应性月考卷(六)数学试题