名校
1 . 已知左、右焦点分别是的椭圆
的离心率为
,过左焦点的直线
与椭圆
交于
两点,线段
的中点为
,现有下列说法:
①的周长为
;
②若直线的斜率为
的斜率为
,则
;
③若,则
的最小值为
;
④若,则
的最大值为
.
其中正确说法的序号为( )
A.①②③ | B.①②④ | C.②③④ | D.①③④ |
您最近一年使用:0次
2 . 若方程
所表示的曲线为C,给出下列命题:
①若C为椭圆,则实数t的取值范围为
;
②若C为双曲线,则实数t的取值范围为
;
③曲线C不可能是圆;
④若C为椭圆,且长轴在x轴上,则实数t的取值范围为
,其中真命题的序号为______ .(把所有正确命题的序号都填在横线上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3d4ce1e61016c6b971f79d85ef9586.png)
①若C为椭圆,则实数t的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69abe959988e4c8c0739f5857ccfb0f.png)
②若C为双曲线,则实数t的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b931d943f5160350e6627a02736ff583.png)
③曲线C不可能是圆;
④若C为椭圆,且长轴在x轴上,则实数t的取值范围为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57cfba44d536940fc258a1b0478b90b2.png)
您最近一年使用:0次
2021-11-16更新
|
342次组卷
|
4卷引用:山西省怀仁市2021-2022学年高二上学期期中数学(文)试题
名校
3 . 若方程
所表示的曲线为
,给出下列四个命题:
①若
为椭圆,则实数
的取值范围为
;
②若
为双曲线,则实数
的取值范围为
;
③曲线
不可能是圆;
④若
表示椭圆,且长轴在
轴上,则实数
的取值范围为
.
其中真命题的序号为________ .(把所有正确命题的序号都填在横线上)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e3d4ce1e61016c6b971f79d85ef9586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ae286ae8a209bc659ace6354b79abf.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1428a22f5b703f74a47838fc3090fc5.png)
③曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
④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/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2de52259b426acb42761fec59a7748.png)
其中真命题的序号为
您最近一年使用:0次
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4 . 下列结论:
(1)若
,则“
”成立的一个必要不充分条件是“
,且
”;
(2)存在
,且存在
使得
;
(3)若函数
的导函数是奇函数,则实数
;
(4)平面上的动点
到定点
的距离比
到
轴的距离大
的点
的轨迹方程为
;
(5)已知平面
满足
,则
;
(6)若
,则事件
与
是对立事件.
其中正确结论的序号为__________ .(填写所有正确的结论序号)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9344f4fca7b9779ca7720e5277ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec124eb33e5ab4601b4b70f70913b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
(2)存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ef778b8c90778644b6f34d2f851b0.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcfe5f8a174b9b70fe067e171da7ea2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
(4)平面上的动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
(5)已知平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3e3f7a929526d602d0a4010ba479a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cac3ca03e7640dceb04fbf33b8268b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
(6)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f94cb714391a7e13d8e53bebd4042fb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
其中正确结论的序号为
您最近一年使用:0次
5 . 已知:① 函数
有且仅有一个零点;② 在
中,若
,则
;③抛物线
的焦点坐标为
;④不等式
恒成立,则上面结论错误的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37aa94fb49142178126bf4d6730af798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca51be437b1a97ca92aa1159ab71102c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dc38d888741a1b2e95fe0773a48c38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380c8ff22997421404c4f0d0708ab126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29881e55e3dd8760966a415648a556b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbe0d2108648e69fcddab17c20d1763.png)
A.① | B.② | C.③ | D.④ |
您最近一年使用:0次
名校
6 . 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
|
5卷引用: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)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) 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(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)
名校
7 . 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,
,则动点
的轨迹为双曲线;②以定点
为焦点,定直线
为准线的椭圆(
不在
上)有无数多个;③方程
的两根可分别作为椭圆和双曲线的离心率;④过原点
任作一直线,若与抛物线
,
分别交于
、
两点,则
为定值.
其中真命题的序号为________ (写出所有真命题的序号)
![](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/0043a7c94f83d4384631d6af58e2f6fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e31a5fd45c1d9597274514b23f81a44e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4841b60f8f9632f2398e0cfc3f5215b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c05093f9548cc6c9ca78309e27e74c.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/2a325ef9b2922f6c3507224516753e97.png)
其中真命题的序号为
您最近一年使用:0次
名校
8 . 以下四个关于圆锥曲线的命题:
(1)直角坐标系内,到点
和到直线
距离相等的点的轨迹是抛物线;
(2)设
为两个定点,若
,则动点
的轨迹为双曲线;
(3)方程
的两根可分别作椭圆和双曲线的离心率;
(4)若直线
和
没有交点,则过点
的直线与椭圆
的交点个数为
.其中真命题的序号为___ .(写出所有真命题的序号)
(1)直角坐标系内,到点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c7b74fd862d7e3f35e40ae1f626c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5434dfea8a321255e5466bc60ab1be0b.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0ecf8049d69be4f8c15a8f35bffcf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67f9da93ffb16e3e15db5eb0b7a3618d.png)
(4)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29b82fcfd62228e12f020fec264fe21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3a9b723303acf1669d4d88a7172b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aaa597a5aa6176863eda3fdf83e181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6205da5e1d2730ee0b3de8bca3e29f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
您最近一年使用:0次
9 . 以下四个关于圆锥曲线的命题中
①设A、B为两个定点,k为非零常数,
,则动点P的轨迹为双曲线;
②曲线
表示焦点在y轴上的椭圆,则
;
③方程2x2-5x+2=0的两根可分别作为椭圆和双曲线的离心率;
④双曲线
与椭圆
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A、B为两个定点,k为非零常数,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8102b988af691a05df9207177c3b38ee.png)
②曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cc3a09fed211d42591392000df8263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ee35e29631c6f0a2fabce47d6bcb0c.png)
③方程2x2-5x+2=0的两根可分别作为椭圆和双曲线的离心率;
④双曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe7b61d047ead446758a60bd5c579a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706008bd4bb154c2f1b4ef4757ea2923.png)
其中真命题的序号为
您最近一年使用:0次
2019-12-02更新
|
507次组卷
|
2卷引用:福建省龙岩市长汀县长汀、连城一中等六校2019-2020学年高二上学期期中数学试题
名校
10 . 曲线
是平面直角坐标系内与两个定点
和
的距离之积等于4的点的轨迹,则( )
①曲线
过原点;
②曲线
关于原点对称;
③若点
在曲线
上,则
的面积不大于2;
④曲线
与曲线
有且仅有两个交点.
其中正确命题的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9d55173f26afdf0e37462b556a605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d6f746c2355072d914591bf60c3801.png)
①曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
③若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
④曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
其中正确命题的序号为( )
A.①② | B.②③④ | C.③④ | D.①②④ |
您最近一年使用:0次
2023-11-13更新
|
324次组卷
|
2卷引用:北京市汇文中学2023-2024学年高二上学期期中考试数学试题