名校
解题方法
1 . 如图,椭圆
的离心率为
,其长轴的两个端点与短轴的一个端点构成的三角形的面积为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/1/3c0185ac-cc25-48f4-bd43-909fbf8778d7.png?resizew=176)
(1)求椭圆C的标准方程;
(2)过点
的直线l交C于A、B两点,交直线
于点P.若
,
,证明:
为定值,并求出这个定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/1/3c0185ac-cc25-48f4-bd43-909fbf8778d7.png?resizew=176)
(1)求椭圆C的标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a29ba49963134a7232fa8574105fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b6ec665d04d264ba699172a248072f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34fd6373131aec5fc5fe61e67e37496.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
您最近一年使用:0次
2023-11-10更新
|
931次组卷
|
6卷引用:四川省内江市第六中学2023-2024学年高二上学期第二次月考数学试题
四川省内江市第六中学2023-2024学年高二上学期第二次月考数学试题重庆市南开中学校2023-2024学年高二上学期期中数学试题重庆市大渡口区巴渝学校2023-2024学年高二上学期期中数学试题(已下线)宁夏回族自治区石嘴山市第三中学2023-2024学年高二上学期12月月考数学试题河北省石家庄市第二中学2023-2024学年高二上学期第三次月考(12月)数学试题宁夏石嘴山市第三中学2023-2024学年高二上学期第二次月考数学试卷
2 . 设
、
分别是椭圆
的左、右焦点,若_____,
请在以下两个条件中任选一个补充在横线上并作答.
①四点
、
、
、
中,恰有三点在椭圆
上;
②椭圆
经过点
,
与
轴垂直,且
.
(注:如果选择多个条件分别解答,则按第一个解答计分).
(1)求椭圆
的离心率;
(2)设
是椭圆
的上顶点,过
任作两条互相垂直的直线分别交椭圆
于
、
两点,过点
作线段
的垂线,垂足为
,判断在
轴上是否存在定点
,使得
的长度为定值?并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
请在以下两个条件中任选一个补充在横线上并作答.
①四点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07f05b989842734d1afd9429d15f5484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ccebafcbec8ab901145708edf2b3da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbdd68297be3e412c68d27457a9f8224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9085f45a27c7122adddfec645b233e00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e97a3b321e8f5a5cc526b2b8daa702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183b6a0cef4256c9696a5bca31053da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3c9cedff7811b2f9e565bdf42bfee1.png)
(注:如果选择多个条件分别解答,则按第一个解答计分).
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a81443594dd303ef713b62378dd5c20.png)
您最近一年使用:0次
名校
解题方法
3 . 已知抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98039a3c75554c5eae14dbe8caba181.png)
的焦点为
,且经过点
.
(1)求
;
(2)若过点
的直线
与抛物线
交于不同的两点
,
为坐标原点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a98039a3c75554c5eae14dbe8caba181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f057889809ec08bc85f73d3a358fae.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8aed33984ccc91282d8a1c2be27cd0.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e7dbb4d8de32b258d813996710d6241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
您最近一年使用:0次
解题方法
4 . 如图,在正方体
中,E为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/df0db5fa-34e5-4640-b77c-3ad402c30236.png?resizew=164)
(1)求证:
平面
;
(2)求点D到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/df0db5fa-34e5-4640-b77c-3ad402c30236.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
(2)求点D到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
您最近一年使用:0次
2023-10-11更新
|
131次组卷
|
2卷引用:四川省合江县中学校2023-2024学年高二上学期第一次月考数学试题
名校
解题方法
5 . 如图,在四棱锥
中,
面
,
,
,
,
.E为
的中点,点F在棱
上,且
,点G在棱
上,且
.
(1)求证:
面
;
(2)当
时,求点G到平面
的距离;
(3)是否存实数
,使得A,E,F,G四点共面,若存在,求出
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a923784f083b7f4777891afe06b44e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f501d3913a937f93c66620ff4aad846e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b2bbc4161140dbca9676499bc91db8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/28/ee533eea-0480-49c3-a031-92b63710ac90.png?resizew=192)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(3)是否存实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
6 . 如图,菱形
的对角线
与
交于点
,
,
,点
,
分别在
,
上,
,
交
于点
,将
沿
折到
位置,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/38e6c4af-85c4-4c06-b5f4-614b3231e54d.png?resizew=228)
(1)证明:
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4af42b23810ede42d88067f5d86dbc5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8bb1e2dbfd5c00e6a5432bb288265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/803cac9a91f6664dbe83e1d9fc4c8833.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/38e6c4af-85c4-4c06-b5f4-614b3231e54d.png?resizew=228)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdfc11936fa2b2817d0ddedb1f80d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76b2482ff6179d31f535161beef463e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f921b462ee12ad5749ea45d75f609b7.png)
您最近一年使用:0次
2023-12-20更新
|
2104次组卷
|
6卷引用:四川省南充市南充高级中学2023-2024学年高二上学期第二次月考数学试题
四川省南充市南充高级中学2023-2024学年高二上学期第二次月考数学试题(已下线)2024年1月普通高等学校招生全国统一考试适应性测试(九省联考)数学试题变式题16-19(已下线)专题13 空间向量的应用10种常见考法归类(2)安徽省合肥一六八中学2024届高三“九省联考”考后适应性测试数学试题(一)(已下线)6.3 空间向量的应用 (4)(已下线)专题04 立体几何
7 . 如图所示,正方形
所在平面与梯形
所在平面垂直,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/bf980610-b5f1-430b-aa1f-36dc01881773.png?resizew=169)
(1)证明:
平面
;
(2)若点
为线段
上一点,且满足
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02b1139e07e431b5d4276757b232bad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d9f2f091410329fc0b1213b842491d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/bf980610-b5f1-430b-aa1f-36dc01881773.png?resizew=169)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7767d492158189b23af332a8016ed37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923764c34a6c4b86b628fff043fb55a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c52b0a12e4770a56f6fc747976f4cd7a.png)
您最近一年使用:0次
解题方法
8 . 已知点F是抛物线
的焦点,动点P在抛物线上.
(1)写出抛物线的焦点坐标和准线方程;
(2)设直线
与抛物线交于D,E两点,若抛物线上存在点P,使得四边形
为平行四边形,证明:直线
过定点,并求出这个定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
(1)写出抛物线的焦点坐标和准线方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8db7b0199e77f81433d385180e01f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
名校
解题方法
9 . (1)证明:函数
为奇函数的充要条件是
.
(2)我们知道,函数
的图象关于坐标原点成中心对称图形的充要条件是函数
为奇函数,有同学发现可以将其推广为:函数
的图象关于点
成中心对称图形的充要条件是函数
为奇函数.
①求函数
的图象的对称中心.
②类比上述推论,写出“函数
的图象关于y轴成轴对称图形的充要条件是函数
为偶函数”的一个推广的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d501afbd7542f2f724b658edf39af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
(2)我们知道,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d0969cb7acbeaa05a101a385348a00.png)
①求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f84ddc55197b06f7186e77fcaa9d1be6.png)
②类比上述推论,写出“函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
您最近一年使用:0次
2023-11-05更新
|
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10 . 设抛物线
,F为C的焦点,过F的直线l与C交于A,B两点.
(1)若l的斜率为2,求
的值;
(2)求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
(1)若l的斜率为2,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b0ba14e41e306e5633ad4bf1cdedd8.png)
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