21-22高二上·全国·课前预习
1 . 求证:
,
,
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3c80b6e45f5337efb558952f64fc4c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6868a51ea0a78f2605d3d1cbe701351b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d665cb6be4452f2c2f1eec628887033.png)
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2 . 若两个椭圆的离心率相等,则称它们为“相似椭圆”.如图,在直角坐标系xOy中,已知椭圆C1:
,A1,A2分别为椭圆C1的左,右顶点.椭圆C2以线段A1A2为短轴且与椭圆C1为“相似椭圆”.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/99e807e8-e915-4ac9-aa7d-b7a4d466bdaf.png?resizew=150)
(1)求椭圆
的方程;
(2)设P为椭圆C2上异于A1,A2的任意一点,过P作PQ⊥x轴,垂足为Q,线段PQ交椭圆C1于点H.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c03c6b8d7418edf20f474389971352.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/99e807e8-e915-4ac9-aa7d-b7a4d466bdaf.png?resizew=150)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)设P为椭圆C2上异于A1,A2的任意一点,过P作PQ⊥x轴,垂足为Q,线段PQ交椭圆C1于点H.求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5d207830ac0ecb10afcb09c7c4921f3.png)
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2021-12-15更新
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588次组卷
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3卷引用:宁夏石嘴山市平罗中学2021-2022学年高二上学期期中考试数学(文)试题
3 . 已知四边形ABCD的四个顶点是
,
,
,
,求证:四边形ABCD为矩形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91202a910f65c5197868e2eeccbb103.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cad955f235c6dc064b5cc814b8c0656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3866d7491925391b0bd30994751369f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f5e0005baadf4e655c1b377487c8af8.png)
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2021-02-06更新
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6卷引用:人教A版(2019) 选择性必修第一册 新高考名师导学 第二章 2.1 直线的倾斜角与斜率
人教A版(2019) 选择性必修第一册 新高考名师导学 第二章 2.1 直线的倾斜角与斜率(已下线)1.1 直线的斜率与倾斜角-2021-2022学年高二数学链接教材精准变式练(苏教版2019选择性必修第一册)(已下线)2.1 (分层练)直线的倾斜角和斜率-2021-2022学年高二数学考点同步解读与训练(人教A版2019选择性必修第一册)(已下线)1.1 直线的斜率与倾斜角-2021-2022学年高二数学尖子生同步培优题典(苏教版2019选择性必修第一册)(已下线)2.1 直线的倾斜角与斜率人教A版(2019)选择性必修第一册课本习题 习题2.1
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解题方法
4 . 已知函数
.
(1)设
是
图象上的两点,直线
斜率
存在,求证:
;
(2)求函数
在区间
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b766e185b223b7d640a52e78661946.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276c69cee8096b50884b11315045a968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe75a177e6e32a8f7188975f0ad2e48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032e3d25c9f38a3cf745fed1ce3297be.png)
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2021-05-28更新
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489次组卷
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9卷引用:上海市青浦高级中学2021届高三三模数学试题
上海市青浦高级中学2021届高三三模数学试题上海市青浦区2021届高三三模数学试题(已下线)第03讲 二次函数-【提高班精讲课】2021-2022学年高一数学重点专题18讲(沪教版2020必修第一册,上海专用)(已下线)考向09 幂函数与二次函数(重点)(已下线)模块04 幂函数、指数函数和对数函数-2022年高考数学一轮复习小题多维练(上海专用)(已下线)考向25 直线与方程-备战2022年高考数学一轮复习考点微专题(上海专用)(已下线)专题03 函数(1)-备战2022年高考数学(文)母题题源解密(全国乙卷)(已下线)考点06 指数函数图象与性质-备战2022年高考数学典型试题解读与变式(已下线)第12讲 直线和圆的方程- 1
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5 . 已知抛物线
的焦点是
,准线是
.
(Ⅰ)写出
的坐标和
的方程;
(Ⅱ)已知点
,若过
的直线交抛物线
于不同的两点
,
(均与
不重合),直线
,
分别交
于点
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(Ⅰ)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(Ⅱ)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30ac1f4eb5e6145cc1b4241065218f50.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/0451f9e4f4db57e9ae978cdc27325698.png)
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6 . 如图,已知直线
与椭圆
交于
两点.过点
的直线
与
垂直,且与椭圆
的另一个交点为
.
![](https://img.xkw.com/dksih/QBM/2020/11/15/2593744710623232/2594327598055424/STEM/8b5ada7e-86fc-40e6-9c4a-f9bee61efdca.png?resizew=224)
(1)求直线
与
的斜率之积;
(2)若直线
与
轴交于点
,求证:
与
轴垂直.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b343d77ee4dced82ecc479206c42977d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533b93dd6eb6b474481247736699c76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/2020/11/15/2593744710623232/2594327598055424/STEM/8b5ada7e-86fc-40e6-9c4a-f9bee61efdca.png?resizew=224)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2020-11-16更新
|
541次组卷
|
2卷引用:北京市汇文中学2020-2021学年高二上学期期中考试数学试题
名校
解题方法
7 . 已知直线
经过椭圆
的左顶点A和上顶点D,设椭圆C的右顶点为B .
(1)求椭圆C的标准方程和离心率e的值;
(2)设点S是椭圆上位于x轴上方的动点,求证:直线AS与BS的斜率的乘积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18feaed4f3dd7698210ba302c81dca6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd72321801f7ce55ed0330289dd7c577.png)
(1)求椭圆C的标准方程和离心率e的值;
(2)设点S是椭圆上位于x轴上方的动点,求证:直线AS与BS的斜率的乘积为定值.
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8 . (1)求经过下列两点的直线的斜率,并判断其倾斜角是锐角、直角还是钝角.
①
,
;
②
,
;
③
,
.
(2)已知点
,
,
.求证:A,B,C三点共线.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e0b78171a4d834a3c1fd9a484bd2e2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bb7ff5012ac35f2e5fa64b0247ce93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1beb189381103ad1e758fd8cfedb6355.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fecdbb564d76077de1d163243933a81d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d3032c2532cb9b71bbe19de048139d.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1720c968854106555f4dfcb7f38cdac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1282cc43ebf4b459832fec04d805989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b5e164e4c4a86eb4d9873797bad402.png)
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9 . 如图,A,B为椭圆
的左、右顶点,直线
过椭圆C的右焦点F且交椭圆于P,Q两点.连结
并延长交直线
于点M.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/efa3f580-26ea-430f-b383-4c6b8339e866.png?resizew=242)
(1)若直线
的斜率为
,求直线
的方程;
(2)求证:A,Q,M三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279cefeb5c389a37a71e5fd3925f5954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/efa3f580-26ea-430f-b383-4c6b8339e866.png?resizew=242)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
(2)求证:A,Q,M三点共线.
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解题方法
10 . 在直角坐标系
中,椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
的离心率为
,点
在椭圆
上.
(1)求椭圆
的方程;
(2)若斜率存在,纵截距为
的直线
与椭圆
相交于
两点,若直线
的斜率均存在,求证:直线
的斜率依次成等差数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711ca77eefc53ea6784a4fdfdcf4827c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若斜率存在,纵截距为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.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/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaebaf8ceed245eba896f36d8ff14b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42b853a7aa09fb92918e559e03684227.png)
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