1 . 以坐标原点为对称中心,坐标轴为对称轴的椭圆过点
.
(1)求椭圆的方程.
(2)设
是椭圆上一点(异于
),直线
与
轴分别交于
两点.证明在
轴上存在两点
,使得
是定值,并求此定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3b351f66cf98455d42660520b5ff0c.png)
(1)求椭圆的方程.
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e7344dca1e40bf072371ddd5640111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf9f7adfb1276af4d84ce859e6b4247.png)
您最近一年使用:0次
2023-10-19更新
|
992次组卷
|
5卷引用:云南省昆明市第三中学2023-2024学年高二上学期1月期末考试数学试卷
名校
解题方法
2 . 利用“函数零点存在定理”,解决以下问题.
(1)求方程
的根;
(2)设函数
,若
,求证:
.
(1)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e827b8ea16c0407c57bab4c32531f90.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff1c2df9027e8d204599b12ab884c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36825543013336c9df727bc51ff62c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d853c45b1476329cb3014665c768b9c2.png)
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2023-02-15更新
|
311次组卷
|
2卷引用:云南省昆明市五华区2022-2023学年高一上学期期末学业质量监测数学试题
名校
3 . 三棱锥
中,
,
,
,直线
与平面
所成的角为
,点
在线段
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1401ce1c-58c3-4119-8bb6-4cd452cd97c2.png?resizew=160)
(1)求证:
;
(2)若点
在
上,满足
,点
满足
,求实数
使得二面角
的余弦值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/463c7753d6f7614f90b19245bb3e439e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1affed1ad8e53a73308c85849a72444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/1401ce1c-58c3-4119-8bb6-4cd452cd97c2.png?resizew=160)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70734a8e672376bb0bd1522e229f86a2.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb04187b181054c7ddc7f0e35e3e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c49e8906f0de208b36a18e448f7ecc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445b51117626fbd3373e32acc514c64b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
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2022-01-21更新
|
667次组卷
|
4卷引用:云南省保山市腾冲市第八中学2023-2024学年高二上学期期末模拟数学试题
名校
解题方法
4 . 已知中心在原点O的椭圆E的长轴长为
,且与抛物线
有相同的焦点.
(1)求椭圆E的方程;
(2)若点H的坐标为(2,0),点
、
(
)是椭圆E上的两点,点A,B,H不共线,且∠OHA=∠OHB,证明:直线AB过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
(1)求椭圆E的方程;
(2)若点H的坐标为(2,0),点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6ff82ebdfad5e7de1c7487b0b817a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a53e311ee0b5085e7e5a45c606daa5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
您最近一年使用:0次
2022-05-11更新
|
891次组卷
|
6卷引用:云南省德宏州2022届高三上学期期末教学质量检测数学(文)试题
云南省德宏州2022届高三上学期期末教学质量检测数学(文)试题云南省玉溪市第一中学2023届高三上学期开学考试数学试题 湖北省宜昌市夷陵中学2021-2022学年高二下学期诊断性检测数学试题河南宋基信阳实验中学2021-2022学年高二下学期转段考试(升高三)理科数学试题新疆克拉玛依市高级中学2022-2023学年高三下学期第一次闭环检测文科数学试题(已下线)专题3-6 抛物线综合大题归类(讲+练)-【巅峰课堂】2023-2024学年高二数学热点题型归纳与培优练(人教A版2019选择性必修第一册)
名校
5 . 过抛物线
:
上一动点
作x轴的垂线,记垂足为
,设线段
的中点为
,动点
的轨迹为曲线
,设
为坐标原点
(1)求曲线
的方程;
(2)过抛物线
的焦点
作直线与曲线
交于
两点,设抛物线
的准线为
,过点
作直线
的垂线,记垂足为
,证明:
、
、
三点共线,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/1dde8112e8eb968fd042418dd632759e.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
解题方法
6 . 如图,已知
是平面
外两点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/6f423eaa-85eb-45b4-8235-3a55c33b4010.png?resizew=200)
(1)求证:
平面
;
(2)若
,求该几何体的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b888c403e04212d38ecc4c83978cf3b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/6f423eaa-85eb-45b4-8235-3a55c33b4010.png?resizew=200)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f214481e6b23307a37940f6dd0313d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c55b765cfbdf6897f224556f703192.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc8e3cb7f6234f0fe6704e7cef71827.png)
您最近一年使用:0次
2022-02-22更新
|
385次组卷
|
2卷引用:云南省昭通市2022届高三期末数学(文)试题
7 . 向量是解决数学问题的一种重要工具,我们可以应用向量的数量积来解决不等式等问题.
(1)(ⅰ)若
,
,比较
与
的大小;
(ⅱ)若
,
,比较
与
的大小;
(2)
,
为非零向量,
,
,证明:
;
(3)设
为正数,
,
,
,求
的值.
(1)(ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecf76d71aed3b37bd48550bf48c1086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f683269ae8936d010ba111e9c9be5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a8f20036b1e7cfb0800f141d843718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f01e75d42bcb00df9c20734d9f3c547.png)
(ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecf76d71aed3b37bd48550bf48c1086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012b990e9c0d9f8da823df2ef36b26dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a8f20036b1e7cfb0800f141d843718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f01e75d42bcb00df9c20734d9f3c547.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0118005d052d96ec2490facb71145b05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04e531f59cead9c6f1017dbf1c953f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79e891ae2a63b7c20e00cb05e9acb71.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a93b98eef83e6b1b364a4cd6c55148ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e37739c262e686df999f5b89595c264.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc786b1cdc9c0bf814f43abdb1d2ad67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5b9c5de247a0aef2e56f58a88a8698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f4495f96d35d8cb294a872223b923a.png)
您最近一年使用:0次