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1 . 在棱长为 1 的正方体
中,已知
分别为线段
的中点,点
满足
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85789b7d63712c81dcc0fb60014bbb8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b829ac65651fac7a19a0b837939c3ff.png)
A.当![]() ![]() |
B.当![]() ![]() ![]() |
C.![]() ![]() |
D.若![]() ![]() ![]() |
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2卷引用:重庆市乌江新高考协作体2023-2024学年高二下学期第二阶段性学业质量联合调研抽测(5月)数学试题
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2 . 伯努利双纽线最早于1694年被瑞士数学家雅各布·伯努利用来描述他所发现的曲线.在平面直角坐标系
中,把到定点
,
距离之积等于
的点的轨迹称为双纽线,已知点
是
的双纽线
上一点,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb162568cb923c31c7209c8a22e4674.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca4d2dd6a806193dfd4d66991a48a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be45dd63a0db0b7ab458f30ee6a67881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.若直线![]() ![]() ![]() ![]() ![]() ![]() ![]() |
B.双纽线![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
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解题方法
3 . 已知正方体
的棱长为1,空间中一动点
满足
,
分别为
的中点,则下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b963c0c29bcb13c2dc93ae9abf53a841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5f302c1c2f7e1b46cad05594ed672e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d92178a5c6a76586292f622da298a8db.png)
A.存在点![]() ![]() ![]() |
B.设![]() ![]() ![]() ![]() |
C.若![]() ![]() |
D.三棱锥![]() ![]() |
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解题方法
4 . 已知棱长为1的正方体
内有一个动点M,满足
,且
,则四棱锥
体积的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8c425e2bc51c94717ee613f9a6dff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/440e8409121aff14ec2d2d7f3919a150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0db0dfbebfda04286949b1f11efb36.png)
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5 . 已知
,曲线
上任意一点到点
的距离是到直线
的距离的两倍.
(1)求曲线
的方程;
(2)已知曲线
的左顶点为
,直线
过点
且与曲线
在第一、四象限分别交于
,
两点,直线
、
分别与直线
交于
,
两点,
为
的中点.
(i)证明:
;
(ii)记
,
,
的面积分别为
,
,
,则
是否为定值?若是,求出这个定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db5660be1b6e0d3d1cab756d6f8f5855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知曲线
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b85d79eabe4ce65b09f16a202c6b017.png)
(ii)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba08ef7e19164e78dc0dc08fe4395d37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135361ee2e038ca0dd890b701ac1ef5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/740eea87967a331d7da821592a639076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc80d8bbc5fec873686719e78bd518d.png)
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6 . 我们通常把圆、椭圆、抛物线、双曲线统称为圆锥曲线.通过普通高中课程实验教科书《数学》2-1第二章《圆锥曲线与方程》的章头引言我们知道,用一个垂直于圆锥的轴的平面去截圆锥,截口曲线(截面与圆锥侧面的交线)是一个圆.实际上,设圆锥母线与轴所成角为
,不过圆锥顶点的截面与轴所成角为θ.则当
,截口曲线为圆,当
时,截口曲线为椭圆;当
时,截口曲线为双曲线;当
时,截口曲线为抛物线.则在长方体
中,
,
,点P在平面ABCD内,下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ad7d1e3fad77908415415d6b2a90f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051962073bb8d9fa55943300dfd2fa77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c1cfef1a4ccd3baa3bfc86e6c084f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f5d2e8186f0173d7862b1d39fb3dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
A.若点P到直线![]() ![]() |
B.若点P到直线![]() ![]() |
C.若![]() |
D.若![]() |
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7 . 长为2的线段
的两个端点
和
分别在
轴和
轴上滑动,则点
关于点
的对称点
的轨迹方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/ac047e91852b91af639feec23a9598b2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . “四二一广场”是重庆第一中学校的文化地标(如图1),广场中心的建筑形似火炬宛若花开,三朵“花瓣”都是拓扑学中的莫比乌斯带(如图2).将莫比乌斯带投影到平面上,会得到无穷大符号“∞”.在平面直角坐标系中,设线段AB长度为2a(
),坐标原点O为AB中点且点A,B均在x轴上,若动点P满足
,那么点P的轨迹称为双纽线,其形状也是无穷大符号“∞”(如图3).若
,点P在第一象限且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33fc05839e6ff475c407d14a32ebe93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10095f96af5d08c531ed47ae3c5e4032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c87f372c0ef272e805510a07d47092b.png)
A.![]() | B.![]() | C.![]() | D.2 |
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9 . 如图,在边长为4的正方体ABCD-A1B1C1D1中,E,F分别是棱B1C1,C1D1的中点,P是正方形A1B1C1D1内的动点,则下列结论正确的是( )
A.若DP∥平面CEF,则点P的轨迹长度为![]() |
B.若AP=![]() ![]() |
C.若AP=![]() ![]() |
D.若Р是棱A1B1的中点,则三棱锥![]() ![]() |
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5卷引用:重庆市永川北山中学校2024届高三下学期高考预测卷(最后一套)数学试题
重庆市永川北山中学校2024届高三下学期高考预测卷(最后一套)数学试题福建省莆田市2024届高三第四次教学质量检测(三模)数学试题(已下线)模块5 三模重组卷 第2套 复盘卷(已下线)期末押题卷01(考试范围:苏教版2019选择性必修第二册)-【帮课堂】2023-2024学年高二数学同步学与练(苏教版2019选择性必修第二册)陕西省安康市高新中学2023-2024学年高一下学期6月月考数学试题
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10 . 平面直角坐标系中,曲线
的方程为:
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633fad93028b6fdaf6a1829c2af61100.png)
A.曲线![]() ![]() | B.曲线![]() ![]() |
C.曲线![]() | D.曲线![]() ![]() ![]() |
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