名校
解题方法
1 . 已知点F为抛物线
的焦点.点
在C上,点D在x轴上(位于点F右侧),直线AF,AD分别交C于另一点B,E,点G在线段FD上且
.
(1)求抛物线C的方程;
(2)设
,
的面积分别为
,
,求
的表达式
及
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdaedb59b9f188b03692b188feb50e65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d8f4a244b19fcbb07132d8af4335ea9.png)
(1)求抛物线C的方程;
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bd9311e5295f10061deb2872fe04af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bbd6f0a0412d0f43ce1f7c1d530e56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fefe4f136ccfb1ea72a46c5dcfc5a26c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edbf2c269423f930e499615444f02e16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6592ef5497c7817fa6dbf96fead6fb08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f81f2a0196b06fc56a7e8a6463d179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f81f2a0196b06fc56a7e8a6463d179.png)
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2 . 已知抛物线
的焦点为F,B、C为抛物线T上两个不同的动点,当B,C过F且与x轴平行时,BC长为1.
(1)求抛物线T的标准方程;
(2)分别过B,C作x轴的垂线,交x轴于M,N,若
,求BC中点的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3798d71f2faa40d870857be668124311.png)
(1)求抛物线T的标准方程;
(2)分别过B,C作x轴的垂线,交x轴于M,N,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb470d2b5da7216cb12573023fc3d551.png)
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3 . 已知抛物线
的焦点为F,准线为
,过焦点F的直线交抛物线E于A、B.
(1)若
垂直l于点
,且
,求AF的长;
(2)O为坐标原点,求
的外心C的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4fb72e39d79b7a0cd892fa5fa34bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b55edde2e23d3758309333d7fd70c077.png)
(2)O为坐标原点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87e84f9d4edcbf9d7193431d09bd460b.png)
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解题方法
4 . 在直角坐标系
中,曲线
与直线
交于
,
两点.
(Ⅰ)若
,
,求
;
(Ⅱ)曲线
在点
,
处的切线相交于点
,
,
分别交
轴于点
,
两点是否存在实数
,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/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51cbe3cd6f5aa46b03bfdecac4e87354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/964c712a8288b48646561d543f17974c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ebd3da00c47aa79a3ec1cf63ce8a68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(Ⅱ)曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3171782adaf4a9ec5064f67e61ae2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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解题方法
5 . 已知椭圆
的右焦点为
,离心率
,点A、B分别是椭圆E的上、下顶点,O为坐标原点.
(1)求椭圆E的方程;
(2)过F作直线l分别与椭圆E交于C、D两点,与y轴交于点P,直线AC和BD交于点Q,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a200ca2c4af794f4d1c6a5443830b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ce47fde921058026708a4321a0e213.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
(1)求椭圆E的方程;
(2)过F作直线l分别与椭圆E交于C、D两点,与y轴交于点P,直线AC和BD交于点Q,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9cbc334d6f4b6f92ffdeba67ca441b8.png)
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解题方法
6 . 已知抛物线
,圆
与y轴相切,过
的焦点F的直线从上至下依次交
和
于A,B,C,D四个点(如图所示),且
,O为坐标原点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7982708a5101a823a69e4b8761a9638f.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d624a18acd4fccfedaf984862adc004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe289c4302361dc8226c44f15d1a5ec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/3fe5752019e75a925c2e2d8ddebfd18e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7982708a5101a823a69e4b8761a9638f.png)
![](https://img.xkw.com/dksih/QBM/2020/9/19/2553327411576832/2553401743106048/STEM/27c631093d1a45ef943aa3a47e808fe5.png?resizew=150)
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7 . 如图所示椭圆
的左、右顶点分别为
,
,上、下顶点分别为
,
,右焦点为
,
,离心率
.
![](https://img.xkw.com/dksih/QBM/2020/9/19/2553327894921216/2553395095429120/STEM/7ce5462ba39e47dd805edb955f7ea26e.png?resizew=207)
(1)求椭圆
的方程;
(2)过点
作斜率为
的直线
与椭圆
交于点
,
(点
在第一象限),直线
与直线
交于点
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.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/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b86ef337d853f60c0eb03865d0b3639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
![](https://img.xkw.com/dksih/QBM/2020/9/19/2553327894921216/2553395095429120/STEM/7ce5462ba39e47dd805edb955f7ea26e.png?resizew=207)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3182f32cc4f57ff13155ada0231d606f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b99738c0ba6ad5af08c609bd57fbc015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6872196eb516b7e6cced75eafa8e3905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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2020-09-19更新
|
1340次组卷
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5卷引用:2020届河北省衡水中学高三卫冕联考数学(文)试题
2020届河北省衡水中学高三卫冕联考数学(文)试题(已下线)专题21 圆锥曲线综合-2020年高考数学(文)母题题源解密(全国Ⅰ专版)(已下线)专题20 圆锥曲线综合-2020年高考数学(理)母题题源解密(全国Ⅰ专版)(已下线)第41讲 椭圆-2021年新高考数学一轮专题复习(新高考专版)江西省新余市第一中学2021届高三全真模拟考试数学(文)试题
名校
解题方法
8 . 已知抛物线
:
上的点到焦点的距离最小值为1.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/757cbec5-9737-4da2-86cd-8dccf9da7154.png?resizew=185)
(1)求
的值;
(2)若点
在曲线
:
上,且在曲线
上存在三点
,
,
,使得四边形
为平行四边形.求三角形
的面积
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/757cbec5-9737-4da2-86cd-8dccf9da7154.png?resizew=185)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/659a3cd8f47b269749e3b7ebc89a4698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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9 . 已知
,
为椭圆
:
的两个焦点,若
上存在点
满足
,则实数
取值范围是( )
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f984e5436777978072b02885fe7275a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b490e09248ea3242ec67afae8d00c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 如图所示,椭圆
的左、右顶点分别为
、
,上、下顶点分别为
、
,右焦点为
,
,离心率为
.
![](https://img.xkw.com/dksih/QBM/2020/9/19/2553312417579008/2553367923122176/STEM/3f8c0bd16ee9428bb620980ceda8bbf3.png?resizew=209)
(1)求椭圆的方程;
(2)过点
作不与
轴重合的直线
与椭圆交于点
、
,直线
与直线
交于点
,试讨论点
是否在某条定直线上,若存在,求出该直线方程,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b86ef337d853f60c0eb03865d0b3639.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2020/9/19/2553312417579008/2553367923122176/STEM/3f8c0bd16ee9428bb620980ceda8bbf3.png?resizew=209)
(1)求椭圆的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887e587a4fb083a37f3d84f42874ec16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/b99738c0ba6ad5af08c609bd57fbc015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6872196eb516b7e6cced75eafa8e3905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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2020-09-19更新
|
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4卷引用:2020届河北省衡水中学高三卫冕联考数学(理)试题