名校
解题方法
1 . 在平面直角坐标系
中,设椭圆
的左焦点为
,左准线为
为椭圆
上任意一点,直线
,垂足为
,直线
与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/392f287c-4611-42ca-8151-a4af049e9541.png?resizew=201)
(1)若
,且
,直线
的方程为
.①求椭圆
的方程;②是否存在点
,使得
?若存在,求出点
的坐标;若不存在,说明理由.
(2)设直线
与圆
交于
两点,求证:直线
均与圆
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ea803e31d2dedcf0590e0a0475e7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7b57a209fbac206ddc5b6a5648488b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/392f287c-4611-42ca-8151-a4af049e9541.png?resizew=201)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d70009d48ea5ed5e20cc5eff3d557e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0997aef37c85b3b959a948673bf65490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a14b8101715f591bc29720233eba8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8af0e61464dff86033fa54bb4ab3a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d42cb68c5c877a455ba7ac0a6b6a651.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
名校
2 . 在平面直角坐标系中,设
的顶点分别为
,圆
是
的外接圆,直线
的方程是
.
(1)求圆
的方程;
(2)证明:直线
与圆
相交;
(3)若直线
被圆
截得的弦长为3,求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4ab94d96ba64aed0072ecf8238cb7c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9e530f7ee7abefd1826a1793715300.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(3)若直线
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2010·江苏盐城·三模
名校
3 . 已知椭圆
:
的左、右焦点分别为
,下顶点为
,点
是椭圆上任一点,⊙
是以
为直径的圆.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/de705bab-d5d6-4b96-9939-65108210b7b2.png?resizew=181)
(Ⅰ)当⊙
的面积为
时,求
所在直线的方程;
(Ⅱ)当⊙
与直线
相切时,求⊙
的方程;
(Ⅲ)求证:⊙
总与某个定圆相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/de705bab-d5d6-4b96-9939-65108210b7b2.png?resizew=181)
(Ⅰ)当⊙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c487fec20bd809e0baf5cb39afe8979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
(Ⅱ)当⊙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabea664e61863b3b3279dbce607924e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(Ⅲ)求证:⊙
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2019-01-30更新
|
1164次组卷
|
4卷引用:盐城市2009-2010学年度高三年级第三次调研考试数学试卷
(已下线)盐城市2009-2010学年度高三年级第三次调研考试数学试卷安徽省合肥市庐阳区第一中学2019-2020学年高二上学期期末数学(理)试题安徽省合肥市第一中学2019-2020学年高二上学期期末理科数学试题四川省遂宁市第二中学校2023届高三第七次模拟文科数学试题
名校
4 . 已知圆M的方程为
,直线l的方程为
,点P在直线l上,过点P作圆M的切线PA,PB,切点为A,B.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/ede07bf6-d828-4aa2-ae68-ba7a5a4914e5.png?resizew=176)
若
,试求点P的坐标;
求四边形PAMB面积的最小值及此时点P的坐标;
求证:经过A,P,M三点的圆必过定点,并求出所有定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9a6d82335b7c7067ffb1a199684b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6476776e206e9244df982381530c5b3d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/18/ede07bf6-d828-4aa2-ae68-ba7a5a4914e5.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b545ad6a6a318ae64e3571b773ae90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
您最近一年使用:0次
2018-12-08更新
|
1475次组卷
|
4卷引用:【校级联考】江苏省淮安市高中校协作体2018~2019学年高二第一学期期中考试数学试题
【校级联考】江苏省淮安市高中校协作体2018~2019学年高二第一学期期中考试数学试题黑龙江省伊春市伊美区第二中学2019-2020学年高二上学期第一次月考数学(理)试题(已下线)上海市华东师范大学第二附属中学2020-2021学年高二上学期12月月考数学试题山东省诸城第一中学2022-2023学年高二上学期期中模拟数学试题(一)
5 . 在平面直角坐标系xOy中,已知P是直线
上的一个动点,圆Q的方程为:
设以线段PQ为直径的圆E与圆Q交于C,D两点.
证明:PC,PD均与圆Q相切;
当
时,求点P的坐标;
求线段CD长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bdc7174aa2bf0d6670ac277b8f643ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6752034f121eb7dcb3c0bd446b13db27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86a7882f68b2317479f439ef170418f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4bb89a362c1faf4d0c306eabbb59710.png)
![](https://img.xkw.com/dksih/QBM/2018/12/7/2091524981325824/2094537074753536/STEM/5abba9369665498b9de50e84b8ba7401.png?resizew=184)
您最近一年使用:0次
名校
6 . 在平面直角坐标系
中,已知圆
:
,圆
:
(
,且
).
(1)设
为坐标轴上的点,满足:过点P分别作圆
与圆
的一条切线,切点分别为
、
,使得
,试求出所有满足条件的点
的坐标;
(2)若斜率为正数的直线
平分圆
,求证:直线
与圆
总相交.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49b804265a51be64879ebed4f0ec915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86da8f6ba220de9e5787bf05a5ca1e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83117c9f210234dd1ab447c0693e104c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2725a89d93c791f7a0098f4964587905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d6d53a93d1dd71b09a5dd67f89c2e0b.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/4e9a724b59c890095baa5cb73e267c44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9275bd8ce17fcc4a786510b008414ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940f8b929622d295e452fc7c8d183d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若斜率为正数的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
名校
解题方法
7 . 已知椭圆
:
上顶点为
,右焦点为
,过右顶点
作直线
,且与
轴交于点
,又在直线
和椭圆
上分别取点
和点
,满足
(
为坐标原点),连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/5/26aeb9dd-7dc6-44ba-a2bb-33072614e3a2.png?resizew=169)
(1)求
的值,并证明直线
与圆
相切;
(2)判断直线
与圆
是否相切?若相切,请证明;若不相切,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3895c9dc389cf1602889175268c49e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54091ee9682a5e9d0863a43fa588dc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccc7be55c17e88b24377a0207175903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4ff39dd1dfc9caf911ad0d11ba21d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f736bc4b005b5b4a394a913fc0c18538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/5/26aeb9dd-7dc6-44ba-a2bb-33072614e3a2.png?resizew=169)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
(2)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b15febfda66e733f14aa7115ed4343a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
您最近一年使用:0次
8 . 在平面直角坐标系xOy中,已知椭圆C:
(m>0)的离心率为
,A,B分别为椭圆的左、右顶点,F是其右焦点,P是椭圆C上异于A、B的动点.
(1)求m的值及椭圆的准线方程;
(2)设过点B且与x轴的垂直的直线交AP于点D,当直线AP绕点A转动时,试判断以BD为直径的圆与直线PF的位置关系,并加以证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b952faddaf7947c4bf560cd5e2cd95cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
(1)求m的值及椭圆的准线方程;
(2)设过点B且与x轴的垂直的直线交AP于点D,当直线AP绕点A转动时,试判断以BD为直径的圆与直线PF的位置关系,并加以证明.
![](https://img.xkw.com/dksih/QBM/2017/11/23/1823302070018048/1826729577652224/STEM/1cd49dd450224f00ab42d1f9dda745ca.png?resizew=127)
您最近一年使用:0次
9 . 已知直线x-2y+2=0与圆C:x2+y2-4y+m=0相交,截得的弦长为.
(1) 求圆C的方程;
(2) 过原点O作圆C的两条切线,与抛物线y=x2相交于M,N两点(异于原点).求证:直线MN与圆C相切.
您最近一年使用:0次
11-12高二上·江苏·期末
10 . 如图,已知椭圆
的长轴AB长为4,离心率
为坐标原点,过B的直线l与x轴垂直.P是椭圆上异于A、B的任意一点,PH⊥x轴,H为垂足,延长HP到点Q使得HP=PQ,连结AQ延长交直线
于点M,N为
的中点.
![](https://img.xkw.com/dksih/QBM/2011/2/10/1569980637798400/1569980642975744/STEM/9ab371c6073043e989fc962815b6236b.png?resizew=201)
(1)求椭圆
的方程;
(2)证明:Q点在以
为直径的圆
上;
(3)试判断直线QN与圆
的位置关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf789abbcd0127bbd12649c289e6665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://img.xkw.com/dksih/QBM/2011/2/10/1569980637798400/1569980642975744/STEM/9ab371c6073043e989fc962815b6236b.png?resizew=201)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)证明:Q点在以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(3)试判断直线QN与圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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