1 . 已知点
在椭圆
上,椭圆的离心率
.
(1)求椭圆
的方程;
(2)若不过点
的直线
交椭圆于
,
两点,直线
,
的斜率分别为
,
且
,求
面积的取值范围(
为坐标原点).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若不过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae3ab048431fdc75f9a2eef2a762f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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|
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2卷引用:重庆市西南大学附属中学校2023-2024学年高二上学期期末考试数学试题
2023高二上·江苏·专题练习
2 . 已知椭圆的标准方程为
,并且焦距为6,则实数m的值可以为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d056e921957d4155218ef4c3f47ccb9.png)
A.4 | B.![]() | C.6 | D.![]() |
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解题方法
3 . 已知平面内一动点与两定点连线的斜率的乘积为定值时,若该定值为正数,则该动点轨迹是双曲线(两定点除外);若该定值是负数,则该动点轨迹是圆或椭圆(两定点除外).如图,给定的矩形
中,
,
,E、F、G、H分别是矩形四条边的中点,M、N分别是直线
、
的动点,
,
,其中
,且直线
与直线
交于点P.下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/97ba1bc6-4a24-4090-8035-319b6cc2a210.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd9023f48f8ef03b0b6b334a7296d3ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e024cd6044974e74d9c335a20a5728f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84dceb2a9582c6c10c19184d23db1bb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2428289324e4bc2dd1f21644f9017d27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee843b8908f021e14f112b87e4e48d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a8588dc60a543ad70d6bc0d263dbd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360496a4f5cc8a5faca5e089ae4f9531.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/97ba1bc6-4a24-4090-8035-319b6cc2a210.png?resizew=179)
A.若![]() |
B.若![]() |
C.若![]() |
D.若![]() |
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解题方法
4 . 双曲线
焦点是椭圆C:
顶点,且椭圆与双曲线的离心率互为倒数.
(1)求椭圆C的方程;
(2)设动点
在椭圆C上,且
,记直线
在
轴上的截距为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc7ca4890d6de3a9c15af2da204b5ef1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
(1)求椭圆C的方程;
(2)设动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29c1186e8522f399235a268dd3362002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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5 . 已知左、右焦点分别为
,
的椭圆
的长轴长为4,过
的直线交椭圆于P,Q两点,则( )
![](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/b7652756f71aa23878dc03bbc76dccd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
A.离心率![]() |
B.若线段![]() ![]() |
C.![]() |
D.![]() |
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解题方法
6 . 已知椭圆
的左焦点在抛物线
的准线上,且椭圆的短轴长为2,则椭圆的方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4856428c4f87eada4e504fce8cc91d1e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 已知椭圆C:
的右焦点为
,左顶点为A.过点F且不与x轴重合的直线l与C交于P,Q两点(P在x轴上方),直线AP交直线
:
于点M.当P的横坐标为
时,
.
(1)求C的标准方程;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c827576cc9c8ecfacb766fbf06c9ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6166d0ddbac65e10ab514ccb84a207bb.png)
(1)求C的标准方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5df446e6e82b574d1935926bc97a0cb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6ff57729fc51ba27c4d678e5bd7311.png)
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|
279次组卷
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2卷引用:陕西省榆林市十校2024届高三上学期12月联考数学(文)试题
名校
解题方法
8 . 已知椭圆
:
(
)的离心率
,且过点
.
(1)求椭圆
的方程;
(2)过点
作椭圆
的两条互相垂直的弦
、
,试判断直线
是否过定点,若过定点,求出该定点的坐标;若不过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解题方法
9 . 已知椭圆
的离心率为
,左、右焦点分别为
,点
为线段
的中点,过点
且斜率为
的直线
交
于
两点,
的面积最大值为
.
(1)求
的方程;
(2)设直线
分别交
于点
,直线
的斜率为
,是否存在实数
,使得
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d107e77106ff1a9cb76b504bbc99bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252ef4f3003d233ce2467fec89315618.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41b500f34c3eacf9fe726d9e135a5d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad00de19086d5c7f6042f7178fef1985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed21245fcff8d46dbb90007ed907a318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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10 . 已知曲线
的方程为
,下列说法错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22083bec9fe028e6002c0e3781edf852.png)
A.“![]() ![]() ![]() |
B.当![]() ![]() |
C.存在实数![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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2卷引用:陕西省渭南市临渭区渭南市三贤中学2024届高三上学期12月月考数学(理)试题