1 . 在平面直角坐标系中,抛物线
:
的焦点为
,直线
交C于A,B两点,延长AF,BF分别交抛物线于M,N两点.令
,
,
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91356fe1338cd458e4b1761b36873145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91703f114468effe42cc90bfbcaccc94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfc1cf121adab4cddcdd98415b3a3c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b8cc74825d62042a387df3ca6542ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7faa87c58d6807e27193ab43be29e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11d75bfbd8b05a5987d579f35b2969a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fa605fe0907e944ec0f716cad93002.png)
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2 . 如图,已知
内接于抛物线
,且边
所在直线分别与抛物线
相切,F为抛物线M的焦点.求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/9363e490-d4f9-4149-82da-1203d0f10886.png?resizew=200)
(1)边
所在直线与抛物线M相切;
(2)A,C,B,F四点共圆.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bc980a6ff5fe01b746c65af072a05e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19409d6d120387b3bccd934c4911bb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd646f98b097a1b09f0b8a76ec399340.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/9363e490-d4f9-4149-82da-1203d0f10886.png?resizew=200)
(1)边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)A,C,B,F四点共圆.
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3 . 函数
的图像酷似教师批改作业时所画的“对勾”,所以我们常称
为“对勾函数”.其图像是双曲线,其渐近线方程为
(即
轴)与
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/c28cc4cf-c4ed-40e7-9c26-b0a8365caa55.png?resizew=165)
(1)求C顶点的坐标与离心率;
(2)求C焦点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16803c866fdda79e4a0ebaef33b48f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb788ae88e457017bb81120b6a2e5ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14fd2128777226fdda969aaaa541cea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fdb3bf31cb105ddfe045d24f929ce6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/c28cc4cf-c4ed-40e7-9c26-b0a8365caa55.png?resizew=165)
(1)求C顶点的坐标与离心率;
(2)求C焦点坐标.
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4 . 已知椭圆C:
的离心率为
,
、
分别为椭圆C的左、右顶点,
、
分别为椭圆C的左、右焦点,B为椭圆C的上顶点,且
的外接圆半径为
.
(1)求椭圆C的方程;
(2)设与x不垂直的直线l交椭圆C于P、Q两点(P、Q在x轴的两侧),记直线
、
、
、
的斜率分别为
、
、
、
.已知
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7451b947d1adea22bc04070efdd2b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cfa1e7ffae662aefb49a44c52d4954d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9721059d158853671eaf19e39769b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd8db4b168ddbcba90ac9b31d36a0432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82fe25db889399bb3ca4ffd5dd5db84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130c1bb7866e816804248f5eb8c59417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c68316a6c48b33c53e2725274c8e1d65.png)
(1)求椭圆C的方程;
(2)设与x不垂直的直线l交椭圆C于P、Q两点(P、Q在x轴的两侧),记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1d228a6558961e7346d0326207dacf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69286a11bc6a2641c73542167ce2c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cfdaad60640c4c023a339ffdc459d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95dfc574d8ed4f6e828a9c5c40788d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2562424a83aae7e4b3f8adf90307961a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b58edb637c5dfa03794f3952de9d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be76756ea33cd487013256cbe942a3cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9fa1f26b7d3a7a600ad370cfa176f39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ee33f0fa8b278c793a691206b1fb83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05470dc94e4d9eea98d2c533ce576b07.png)
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5 . 设
为椭圆
:
的左焦点,
为椭圆
上的一点
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/bde87b06-24bb-45fc-b5c4-4e8bac5b393b.png?resizew=188)
(1)作正方形
(
,
,
,
按逆时针排列)当
沿着椭圆运动一周,求动点
的轨迹方程.
(2)设
为椭圆外一点,求
的取值范围.
![](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/6205da5e1d2730ee0b3de8bca3e29f5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/bde87b06-24bb-45fc-b5c4-4e8bac5b393b.png?resizew=188)
(1)作正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857e804aac2f81757178d237485299fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fdf0b6fecd6a78bc83f42e11e60a004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d968044241d03105c05c40fd6b94264.png)
您最近一年使用:0次
名校
解题方法
6 . 给定椭圆
,称圆心在原点O,半径为
的圆为椭圆C的“准圆”.若椭圆C的一个焦点为
,其短轴上的一个端点到F的距离为
.
(1)求椭圆C的方程和其“准圆”方程;
(2)若点P是椭圆C的“准圆”上的动点,过点P作椭圆的切线
,
交“准圆”于点M,N,判断
及线段
是否都为定值,若为定值,求出定值,若不是定值,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da001dad7941e6c9858637d7b62cec59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d314b47d37c9f58e05ad11f3e68e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆C的方程和其“准圆”方程;
(2)若点P是椭圆C的“准圆”上的动点,过点P作椭圆的切线
![](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/c45a8a837c11c07073da3ff751d70278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
7 . 已知点
,P、Q为椭圆
上异于点B的任意两点,且
.若点B在线段
上的射影为M,求点M的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b54b9cf95418bc3dce6e4c698b9907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c82e7d9f4f7ace849e09e9adcb786b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e4cb1a0ea1b684e80129f2415ef2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
8 . (1)试求函数
的最小值;
(2)设a、b都是实数,试求:
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b595e524c67551db52dbada4ccd8c051.png)
(2)设a、b都是实数,试求:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383950541cacfa303679e87e5cb6a19c.png)
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9 . 已知直线
与椭圆
:
交于
、
两点,直线
不经过原点
.
(1)求
面积的最大值;
(2)设
为线段
的中点,延长
交椭圆
于点
,若四边形
为平行四边形,求四边形
的面积.
![](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/48da128547c4cf9745e8e4b99988a3db.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.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/14e902eb263971b466d0fcd91c56b453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
您最近一年使用:0次
2020高三·全国·专题练习
名校
10 . 易知椭圆
,其短轴为4,离心率为e1.双曲线
的渐近线为
,离心率为e2,且
.
(1)求椭圆E的方程;
(2)设椭圆E的右焦点为F,过点G(4,0)斜率不为0的直线交椭圆E于M、N两点设直线FM和FN的斜率为
,试判断
是否为定值,若是定值,求出该定值;若不是定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90adb1f0e193b178f7e387b21a174d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3051f43ac48c0a730a791b8a93ad37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7bcaf273474069ffe4d6e0db22e2cbf.png)
(1)求椭圆E的方程;
(2)设椭圆E的右焦点为F,过点G(4,0)斜率不为0的直线交椭圆E于M、N两点设直线FM和FN的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
2020-05-11更新
|
1080次组卷
|
6卷引用:甘肃省高台县第一中学2021-2022学年高三上学期期中考试数学(理科)试题
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