名校
1 . 极坐标方程
,
和
所表示的曲线围成的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1656178bb8d085a5cbeda8e90cf4e86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f148770f94443d3720c0ec10f998989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/841afc4d922ade4abfae0bceeaae425f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知圆
经过
三点.
(1)求圆
的方程;
(2)已知斜率为
的直线
经过第三象限,且与圆
交于点
,求
的面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08615bf4c01a6335275a02c63743681.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)已知斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68d65ed39a9dfd09c5b907b5de6b144.png)
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2024-01-22更新
|
222次组卷
|
3卷引用:河南省部分重点中学2023-2024学年高二上学期12月质量检测数学试题
名校
3 . 传唱红色歌曲能够弥补青少年面对社会多元化的彷徨,有助于在红歌中受到启迪,树立积极的生活态度和健康的价值观.某重点高中在纪念“一二·九”活动中,举办了“唱青春之序曲,展时代之芳华”红色经典歌曲合唱比赛,由专业教师和学生会共50人组成评委团,评委所打分数的平均分最高的节目参加区合唱比赛.评委对各节目的给分相互独立,互不影响.现有两个特等奖节目:《在太行山上》得分的频率分布直方图和《四渡赤水出奇兵》得分的频率分布表,如下所示:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/234e496d-46b1-4860-8af2-2510392f6ab2.png?resizew=218)
(1)从两个节目各自的平均分来看,应该推选哪个节目参加区合唱比赛(同一组中的数据用该组区间的中点值作代表);
(2)根据印象值表对两个节目的所有评分进行赋值,从两个节目的“印象值”分数中各随机抽取一个分数,试估计《在太行山上》“印象值”比《四渡赤水出奇兵》“印象值”高的概率.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/234e496d-46b1-4860-8af2-2510392f6ab2.png?resizew=218)
分数区间 | [35,45) | [45,55) | [55,65) | [65,75) | [75,85) | [85,95] |
频数 | 1 | 4 | 10 | 22 | 11 | 2 |
频率 | 0.02 | 0.08 | 0.20 | 0.44 | 0.22 | 0.04 |
分数区间 | [35,55) | [55,75) | [75,95] |
印象值 | 8 | 9 | 10 |
(1)从两个节目各自的平均分来看,应该推选哪个节目参加区合唱比赛(同一组中的数据用该组区间的中点值作代表);
(2)根据印象值表对两个节目的所有评分进行赋值,从两个节目的“印象值”分数中各随机抽取一个分数,试估计《在太行山上》“印象值”比《四渡赤水出奇兵》“印象值”高的概率.
您最近一年使用:0次
2024-01-19更新
|
277次组卷
|
3卷引用:河南省新郑市第一中学2024届高三上学期12月阶段测试数学试题
河南省新郑市第一中学2024届高三上学期12月阶段测试数学试题四川省成都市蓉城名校2023-2024学年高二上学期期末联考数学试题(已下线)四川省绵阳市实验高级中学2023-2024学年高二上学期期末模拟数学试题
4 . 已知向量
、
(
三点不共线),若
,则点
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc9656d8286c4d6fa309d6ae347c89e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f5e21d225bf3c159ddf3876fbb8fb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80926aae5bcbe1343ffa1e83a3e20e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 已知离心率
的椭圆
的中心在原点
,焦点在
轴上,直线
交
于
、
两点,且
,其中点
.
(1)求
的面积
的最大值,并求此时椭圆
的方程;
(2)对于(1)的椭圆
上,若存在不同的两点关于直线
对称,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234e7679481ec0d01c915b7fbb71891d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.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/ea60b7fd21ff012243a74f196d379501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2f117dc9adcb8fa7acf25bd2cbf283.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)对于(1)的椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce37928403e28dea457850542edd414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
6 . 已知直线
与抛物线
交于
,
两点(
的横坐标大于
的横坐标).
(1)求
,
的坐标;
(2)点
,
是抛物线
上不同于
,
的两点,直线
,
的倾斜角互补,直线
与直线
相交于点
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5130ca4ce75390124b05699c5a14aa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd2d3bb3d0ad116392117cf849de8b07.png)
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7 . 如图,在三棱锥
中,
,
,
,
,
为
的中点,
为
的中点,
为
的重心,
与
相交于点
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/1ed72a04-ef44-42b9-9807-1bd38151a2b1.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e713f0ba80e87438cf6273fb00cb81a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4873cf61c0893f05a0fa4cfd16f61bbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f3bb1ec8dc337d5dfdb1240842d938b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/12/1ed72a04-ef44-42b9-9807-1bd38151a2b1.png?resizew=155)
A.![]() | B.1 | C.![]() | D.![]() |
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2024-01-12更新
|
369次组卷
|
2卷引用:河南省创新发展联盟2023-2024学年高二上学期第四次联考(12月)数学试题
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解题方法
8 . 已知
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a7e5ddc2be2b7ccb401920c68bcf7df.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() |
D.当![]() ![]() |
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2024-01-09更新
|
428次组卷
|
2卷引用:河南省许济洛平2024届高三上学期第二次质量检测数学试题
名校
解题方法
9 . 已知单位圆上一点
,设以
为终边的角为
,求
的正弦值、余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc93e33935cce75bb8f9de048bb3bab3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42617b2ce6063b6211d181c9859af0bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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10 . 已知
是定义在
上的奇函数,且在区间
上满足三个条件:①对于任意的
,当
时,恒有
成立,②
,③
.则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b593315a098b5310825524dd1834af9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7fa4afa1c54d2bd8be6f89dd274423.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84a748968f143ae50d91f392a217b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa50169feda4b05ad01627a5d5a58879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f96c6b7cd0c20aec716e6496a9f304.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191ef6c9dde8aa6a7bac6c174d161ec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d90cfefb2f4bff83f5c639b77463e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d28fd90f35be324c4e869632319a6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e2bc1bdb4db390af4c36255e32e3d2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-05更新
|
341次组卷
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2卷引用:河南省南阳市新野县第一高级中学校2023-2024学年高一上学期期末预测数学试题(一)