1 . 已知椭圆
的左、右焦点分别为
为坐标原点,直线
与
交于
两点,点
在第一象限,点
在第四象限且满足直线
与直线
的斜率之积为
.当
垂直于
轴时,
.
(1)求
的方程;
(2)若点
为
的左顶点且满足
,直线
与
交于
,直线
与
交于
.
①证明:
为定值;
②证明:四边形
的面积是
面积的2倍.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3324199c6751f2e0e6d8542783b0d957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d4baaf1a6c7794dc95ba89c9e2820c3.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dd2505b79dc4bad657e97c6bfd6c9c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](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/742ff39a10a7fc9deb693abb7fe26680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c07b101a1a118c7558a9e59b13c95c.png)
②证明:四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d89641052a363c69069bc2d747eebf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2 . 已知椭圆
:
,直线
:
交椭圆于M,N两点,T为椭圆的右顶点,
的内切圆为圆Q.
(1)求椭圆
的焦点坐标;
(2)求圆Q的方程;
(3)设点
,过P作圆Q的两条切线分别交椭圆C于点A,B,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b801e3da6f1b42d1f68cbf88cbfb4e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bf66a5f30d94390f59c6a3d1ae6c46.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求圆Q的方程;
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38cc4e8043fb27abccf766c5f314dfe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
名校
3 . 以坐标原点为圆心的两个同心圆半径分别为
和
,
为大圆上一动点,大圆半径
与小圆相交于点
轴于
于
点的轨迹为
.
点轨迹
的方程;
(2)点
,若点
在
上,且直线
的斜率乘积为
,线段
的中点
,当直线
与
轴的截距为负数时,求
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75fc7bca485a94013d4f7c9409c41282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8f37790681b8aa62ddbb44607426fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d218ae08b0d633d182a49ac15de9bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78eba6f91d97cea1dfd73bae53e7b689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0047f659c182291c84c224df6b5e993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b14fa212bbddd28310d463fcdef7e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/b09bf6ba623953df55eb869b2b363e39.png)
您最近一年使用:0次
2024-04-17更新
|
1022次组卷
|
4卷引用:压轴题02圆锥曲线压轴题17题型汇总-4
(已下线)压轴题02圆锥曲线压轴题17题型汇总-4东北三省四城市联考暨沈阳市2024届高三下学期数学质量检测(二)吉林省长春市2024届向三第四次质量监测数学试卷江苏省常州市华罗庚中学2024届高三下学期4月二模训练数学试卷
4 . 焦点在
轴上的椭圆
的左顶点为
,
,
,
为椭圆上不同三点,且当
时,直线
和直线
的斜率之积为
.
(1)求
的值;
(2)若
的面积为1,求
和
的值;
(3)在(2)的条件下,设
的中点为
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a032dd225bdd793172220c494c2054e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c16dac1e9bf5804c8907cbc59014d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b49ade408d775b9fd5f51832378dc8d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c847f857b8d1788d4ba414b82840ef5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05e8fd7b0f5e19e98eebbe844b2e5347.png)
(3)在(2)的条件下,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c2fe11e474108ac0a3d3d538090250.png)
您最近一年使用:0次
2024-03-26更新
|
1066次组卷
|
4卷引用:大招4 圆锥曲线创新问题的速破策略
名校
解题方法
5 . 已知
是圆
上不同的两点,椭圆
的右顶点和上顶点分别为
,直线
分别是圆
的两条切线,
为椭圆
的离心率.下列选项正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1325c6fe42a9e5c04520d8a9bb6821b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4372c60e72bc1f82072a2c31cd51a7cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddfa25e097562b856ddd5e7c0758ee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.直线![]() ![]() |
B.直线![]() ![]() |
C.若椭圆![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
您最近一年使用:0次
2023-07-20更新
|
1525次组卷
|
7卷引用:专题11 平面解析几何-2
(已下线)专题11 平面解析几何-2(已下线)专题18 椭圆、双曲线、抛物线小题(已下线)3.1.2 椭圆的简单的几何性质(重难点突破)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)河北省廊坊市香河县第一中学2023-2024学年高三下学期模拟考试数学试卷河北省张家口市2023届高三三模数学试题山西省运城市运城中学2023届高三第二次模拟数学试题江西省萍乡市安源中学2022-2023学年高二下学期期末考试数学试题
6 . 在平面直角坐标系xOy中,点A在
轴上滑动,点B在
轴上滑动,A、B两点间距离为
.点P满足
,且点P的轨迹为C.
(1)求C的方程;
(2)设M,N是C上的不同两点,直线MN斜率存在且与曲线
相切,若点F为
,那么
的周长是否有最大值.若有,求出这个最大值,若没有,请说明理由.
![](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/d0fe1e989d7fe8a9eb35cb5cf0f9cdaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14379628d6b903f4348eed12b3bc733.png)
(1)求C的方程;
(2)设M,N是C上的不同两点,直线MN斜率存在且与曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb374fd349306abf2f784b6a28d93a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33181b27b10690b4913595f8c1f46e.png)
您最近一年使用:0次
解题方法
7 . 已知圆
,直线
过点
且与圆
交于点B,C,BC中点为D,过
中点E且平行于
的直线交
于点P,记P的轨迹为Γ
(1)求Γ的方程;
(2)坐标原点O关于
,
的对称点分别为
,
,点
,
关于直线
的对称点分别为
,
,过
的直线
与Γ交于点M,N,直线
,
相交于点Q.请从下列结论中,选择一个正确的结论并给予证明.
①
的面积是定值;②
的面积是定值:③
的面积是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f395de669fb40ce6a26d0c3158aa8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879c9db500d9222b3e86779a4814a27d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbb85d28f8bdeedad66fd7ec2a561455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
(1)求Γ的方程;
(2)坐标原点O关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e884ca9429486026caa5e2310b0e4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/201d7685f19582f5d54f9205e8598d5a.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77fd540e5eea1a4e9d73b56acbf7340e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f30f6daddfc50a2bdd6ab80ef0969188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b78ae25bc675c4e1bc00fadbe25381c5.png)
您最近一年使用:0次
8 . 阅读材料:
(一)极点与极线的代数定义;已知圆锥曲线G:
,则称点P(
,
)和直线l:
是圆锥曲线G的一对极点和极线.事实上,在圆锥曲线方程中,以
替换
,以
替换x(另一变量y也是如此),即可得到点P(
,
)对应的极线方程.特别地,对于椭圆
,与点P(
,
)对应的极线方程为
;对于双曲线
,与点P(
,
)对应的极线方程为
;对于抛物线
,与点P(
,
)对应的极线方程为
.即对于确定的圆锥曲线,每一对极点与极线是一一对应的关系.
(二)极点与极线的基本性质、定理
①当P在圆锥曲线G上时,其极线l是曲线G在点P处的切线;
②当P在G外时,其极线l是曲线G从点P所引两条切线的切点所确定的直线(即切点弦所在直线);
③当P在G内时,其极线l是曲线G过点P的割线两端点处的切线交点的轨迹.
结合阅读材料回答下面的问题:
(1)已知椭圆C:
经过点P(4,0),离心率是
,求椭圆C的方程并写出与点P对应的极线方程;
(2)已知Q是直线l:
上的一个动点,过点Q向(1)中椭圆C引两条切线,切点分别为M,N,是否存在定点T恒在直线MN上,若存在,当
时,求直线MN的方程;若不存在,请说明理由.
(一)极点与极线的代数定义;已知圆锥曲线G:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/725a9d6a7c0cd596ece7f4c888b40510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae8f8c1244657aec3fe29890c4681414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d902a46e5e698f08b6e82c887cee9647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1677a6b74dc0182296d2fb525ce564b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9656735f55e5de465e5667ba578d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc49a26cb0c64cea942bff447becfdbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7555cd38f338e8758f5f73e10c08dc0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ba380c2fbc3e6c45bb1dc28a15e219a.png)
(二)极点与极线的基本性质、定理
①当P在圆锥曲线G上时,其极线l是曲线G在点P处的切线;
②当P在G外时,其极线l是曲线G从点P所引两条切线的切点所确定的直线(即切点弦所在直线);
③当P在G内时,其极线l是曲线G过点P的割线两端点处的切线交点的轨迹.
结合阅读材料回答下面的问题:
(1)已知椭圆C:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(2)已知Q是直线l:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0bbd45a300cd506c9d2bbf8f6ac3498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940f1047bde206726ab05cfd6785067d.png)
您最近一年使用:0次
2023-02-19更新
|
1353次组卷
|
6卷引用:重难点突破18 定比点差法、齐次化、极点极线问题、蝴蝶问题(四大题型)
(已下线)重难点突破18 定比点差法、齐次化、极点极线问题、蝴蝶问题(四大题型)(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大题型)(练习)(已下线)第五篇 向量与几何 专题5 调和点列 微点4 调和点列综合训练辽宁省名校联盟2023-2024学年高二下学期4月联合考试数学试卷河南省信阳市新县高级中学2024届高三4月适应性考试数学试题贵州省贵阳市普通中学2022-2023学年高二上学期期末监测考试数学试题
解题方法
9 . 已知椭圆
的左、右焦点分别为
,直线l的斜率为k,在y轴上的截距为m.
(1)设
,若
的焦距为2,l过点
,求l的方程;
(2)设
,若
是
上的一点,且
,l与
交于不同的两点A、B,Q为
的上顶点,求
面积的最大值;
(3)设
是l的一个法向量,M是l上一点,对于坐标平面内的定点N,定义
.用a、b、k、m表示
,并利用
与
的大小关系,提出一个关于l与
位置关系的真命题,给出该命题的证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0c118b51ab426bc1c1b56179094f146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c38928a92bc4b44ed3c9b89769f5372.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a7a78a0cb55d2396f7213432a86b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662ad7f6a6c6a3d97ebdc5017b17fe8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b17f20c25bb16153b5f2d25062ed7a7.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a1cee4fed65dd5d20c089810266653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0970b6eed4ca40fa4ecfbed448615cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0970b6eed4ca40fa4ecfbed448615cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a881309775c3b6a9f4ed408838666342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
您最近一年使用:0次
2022-11-25更新
|
671次组卷
|
5卷引用:专题22 新高考新题型第19题新定义压轴解答题归纳(9大题型)(练习)
(已下线)专题22 新高考新题型第19题新定义压轴解答题归纳(9大题型)(练习)(已下线)大招4 圆锥曲线创新问题的速破策略上海市虹口区2023届高三上学期11月适应性测试数学试题上海海洋大学附属大团高级中学2023届高三上学期12月月考数学试题(已下线)高二下期中真题精选(易错46题专练)-【满分全攻略】2022-2023学年高二数学下学期核心考点+重难点讲练与测试(沪教版2020选修一+选修二)
10 . 已知椭圆
的方程为
.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712321353637888/2718228101832704/STEM/d0b1f36d-b345-4b0d-a430-34a4d6718812.png?resizew=237)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712321353637888/2718228101832704/STEM/5746b78d-f94b-488f-abce-a1cad298b5e8.png?resizew=236)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712321353637888/2718228101832704/STEM/d4ba530b-f4a7-4281-ac34-ada03587e915.png?resizew=264)
(1)设
是椭圆
上的点,证明:直线
与椭圆
有且只有一个公共点;
(2)过点
作两条与椭圆只有一个公共点的直线,公共点分别记为
、
,点
在直线
上的射影为点
,求点
的坐标;
(3)互相垂直的两条直线
与
相交于点
,且
、
都与椭圆
只有一个公共点,求点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712321353637888/2718228101832704/STEM/d0b1f36d-b345-4b0d-a430-34a4d6718812.png?resizew=237)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712321353637888/2718228101832704/STEM/5746b78d-f94b-488f-abce-a1cad298b5e8.png?resizew=236)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712321353637888/2718228101832704/STEM/d4ba530b-f4a7-4281-ac34-ada03587e915.png?resizew=264)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7bc97d4acc37ccb7480571754737cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da744f1fe4ccafc57429536ff249ecd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6fcc80c8f221bfd1c575b7c95fbe66b.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/acc290b44635265137fdf13146b6a6d9.png)
(3)互相垂直的两条直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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