名校
1 . 以下四个关于圆锥曲线的命题中:
①设
、
为两个定点,
为非零常数,若
,则动点
的轨迹为双曲线;
②过定圆
上一定点
作圆的动弦
,
为坐标原点,若
,则动点
的轨迹为椭圆;
③抛物线
的焦点坐标是
;
④曲线
与曲线
(
且
)有相同的焦点.
其中真命题的序号为______ 写出所有真命题的序号.
①设
![](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/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4562ddd51f544eaff300c9b4638646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②过定圆
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a6bb839093992d42c6c813c73ccad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
③抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315513892f06ef3ce82021d5e0566606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2762dfc22fc40385f211f1a23875424b.png)
④曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a0bd4bd9985f1e367c100b453ed03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4e82ca0fbf98b8903c97467acd1d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c69c2e4498e7916dbc05a71fc0c316ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5c9d9221866bca2fd57b9b31100c62.png)
其中真命题的序号为
您最近一年使用:0次
2021-08-26更新
|
1191次组卷
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5卷引用:河北省保定市唐县第一中学2021-2022学年高二上学期12月月考数学试题
河北省保定市唐县第一中学2021-2022学年高二上学期12月月考数学试题江西省景德镇一中2020-2021学年高一(1班)下学期期中考试数学试题(已下线)专题6.2 期中押题检测卷(考试范围:第1-3章)2(中)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(苏教版2019选择性必修第一册) (已下线)考点39 曲线与方程-备战2022年高考数学一轮复习考点帮(浙江专用)(已下线)解密15 双曲线方程(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用)
2 . 已知正方体
,过对角线
作平面
交棱
于点
,交棱CC
于点
,则:①四边形
一定是平行四边形;②多面体
与多面体
的体积相等;③四边形
在平面
内的投影一定是平行四边形;④平面
有可能垂直于平面
.其中所有正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edec6b3a624042e4295d9e709401b0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef5ea43614d815c3abb27a42dfb101b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f48eee22d54bfcaeda05e119f1bd6a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e9c83699f48959aa7fe05c18236e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ef5ea43614d815c3abb27a42dfb101b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
A.①② | B.②③④ | C.①④ | D.①②④ |
您最近一年使用:0次
21-22高三上·北京·期中
名校
解题方法
3 . 已知函数
,任取
,定义集合
点
满足
.设
分别表示集合
中元素的最大值和最小值,记
,给出以下四个结论:①若函数
,则
;②若函数
,则
的最大值为
;③若函数
,则
在
上单调递增;④若函数
,则
的最小正周期为2,其中所有正确结论的序号为__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995ec593baa4ef50b6d87c78380953d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef57fffaa2a73fae4cb219c6ccbf2929.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f71f4ac48908498a5a9eb4d62f5cf27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/676ada988580ff4365da61820eddcef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3215494dccf60336e9f7740d19fcbc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f26d721b107f8b2bc88f3eb0f42c70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d2bbe03029a32873463dd93998605d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed05ed8d7e1011a7df20e484ea87325c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318a16f1950d06e5500c76d8f81a507f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fecc65b2bfb207896ef00c42334caaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb7201e3e41346c74f49e0687430b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fecc65b2bfb207896ef00c42334caaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972cfd3677c0f6342a57d3ab58cf0356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb7201e3e41346c74f49e0687430b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fecc65b2bfb207896ef00c42334caaf.png)
您最近一年使用:0次
2021-11-27更新
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562次组卷
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4卷引用:江西省永新中学2021-2022学年高二上学期第一次段考数学(理)试题
江西省永新中学2021-2022学年高二上学期第一次段考数学(理)试题(已下线)北京市第四中学2022届高三上学期期中考试数学试题北京市第十一中学2023届高三上学期11月月考数学试题(已下线)专题2.2 模拟卷(2)-2022年高考数学大数据精选模拟卷(新高考地区专用)
名校
4 . 设定义域为
的函数
的图象的为
,图象的两个端点分别为
、
,点
为坐标原点,点
是
上任意一点,向量
,
,且满足
,又设向量
,现定义“函数
在
上“可在标准下线性近似”是指
恒成立,其中
为常数.给出下列结论:
①
、
、
三点共线;
②直线
的方向向量可以为
;
③函数
在
上“可在标准1下线性近似”;
④“函数
在
上“可在标准下线性近似”,则
.
其中所有正确结论的序号为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351629c193354cdcf202133052e45028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/774e4c61b6568d292d5bc576d3310d8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d47d5a819f2e82edbac8a82b05f64501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8d07ae344dab105e8453c336308566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d75b82ffc2289f5b389fe3f8fe0ea0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351629c193354cdcf202133052e45028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3083a3f3a1940d55bdfaef87c6046a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
①
![](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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1a0171524ed73b7a52a9f96ecde272.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7647659ce544dd821a7d6e3f02ae4f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e11f4ca0e7ace69f92130d0525bcdb3.png)
④“函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0218391757871723fa717351f57b6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eaf5e5cb81fa1c3e67c152876529037.png)
其中所有正确结论的序号为
您最近一年使用:0次
名校
解题方法
5 . 已知在平行六面体
中,
,
,
为
的中点.给出下列四个说法:①
为异面直线
与
所成的角;②三棱锥
是正三棱锥;③
平面
;④
.其中正确的说法有___________ .(写出所有正确说法的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779d66259687dfc726c1a1d64a4ad006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715cbe825f01412e255e340eab77705d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c20b7648091792e4b4314ea26d9a68bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb650f48c879ea25127662b47d16feec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b190c8d3d7d7d0e6e959e8a52eae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac8293fb46f40ab2382d0df13e1f7f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/a0b30088-8ae5-458d-b297-4b52ed559462.png?resizew=273)
您最近一年使用:0次
2021-09-24更新
|
1254次组卷
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5卷引用:辽宁省沈阳市第八十三中学2021-2022学年高二上学期开学考试数学试题
辽宁省沈阳市第八十三中学2021-2022学年高二上学期开学考试数学试题湖北省武汉市第十四中学2021-2022学年高二上学期10月月考数学试题(已下线)选择性必修第一册 综合测试(提升)-2021-2022学年高二数学一隅三反系列(人教A版2019选择性必修第一册)(已下线)1.1.2 空间向量的数量积运算(重难点突破)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)(已下线)高二上学期期中考试填空题压轴题50题专练-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)