1 . 城市道路大多是纵横交错的矩形网格状,从甲地到乙地的最短路径往往不是直线距离,而是沿着网格走的直角距离,在直角坐标系
中,定义点
的“直角距离”
为:
,设
.
![](https://img.xkw.com/dksih/QBM/2021/12/17/2874575813795840/2876536250466304/STEM/6a33005ce1b74a7abf2038abc4e98eca.png?resizew=426)
(1)写出一个满足
的点
的坐标;
(2)过点
作斜率为
的直线
,点
分别是直线
上的动点,求
的最小值;
(3)设
,记方程
的曲线为
,类比椭圆研究曲线
的性质(结论不要求证明),并在所给坐标系中画出该曲线;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4a2681390214200443ae07c01a4abe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/093c6d5bcaa69cea79b24688f5d1bd97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977d395567ac7d083ee9d15626dcc36a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/17/2874575813795840/2876536250466304/STEM/6a33005ce1b74a7abf2038abc4e98eca.png?resizew=426)
(1)写出一个满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3deaa808b583380da1e2dfd47c4b2daa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977d395567ac7d083ee9d15626dcc36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50297ad9f7256b4d2efc3462289f18b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/162b555f0636a7638fc25feb819512ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50297ad9f7256b4d2efc3462289f18b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06779a085af1299ef1fdc72e55ea3b5d.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86da24b34e0ea2afb5eb98673b310355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
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2021高三·上海·专题练习
2 . 已知双曲线
的顶点为
,与
轴平行的直线
交双曲线于点
.求直线
与
交点
的轨迹方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29eb5ce3f09c49dfa489a3b0bd5beafb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec18c028746b73be7503ff6ff458a8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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3 . (1)若两条曲线的方程是
和
,它们的交点为
.证明:方程
的曲线也经过
(
为任意实数);
(2)求经过曲线
和
的交点的直线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b3267462f6f931706a14878ae007c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7362596c1e45cb04219ce64085cbc3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d958e06a40202e2d17f740acfdc8113e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48e20fb87d2edf396bba3746c9ac8315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf9f50605db5d5f8f3a01ee8e474a112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)求经过曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6f53504d8e313b98f157feeadfa50a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0732de72f868b58dc1078a2a7c2e0464.png)
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解题方法
4 . 动点
到两定点
,
(
)距离之比为
.
(1)求点
的轨迹方程;
(2)点
在什么位置时,
的面积最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83770dfcae8b8e1288aa85d50a63d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d04015890783f6b8b0264b1d1c9127.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95a41b0005805b8c3ed75682220d0f0.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
您最近一年使用:0次
2020-06-25更新
|
276次组卷
|
4卷引用:沪教版(上海) 高二第二学期 新高考辅导与训练 第12章 圆锥曲线 12.1(2) 曲线方程的求法
沪教版(上海) 高二第二学期 新高考辅导与训练 第12章 圆锥曲线 12.1(2) 曲线方程的求法(已下线)【新教材精创】2.4+曲线与方程-B提高练-人教B版高中数学选择性必修第一册河南省豫西名校2020-2021学年高二上学期第二次联考数学(理)试题豫西名校2022-2023学年高二上学期第二次联考数(理)试题
名校
5 . 已知动点
满足
,记M的轨迹为曲线C,直线l:
(
)交曲线C于P,Q两点,点P在第一象限,
轴,垂足为E,连接QE并延长交曲线C于点G.
(1)求曲线C的方程,并说明曲线C是什么曲线;
(2)若
,求
的面积.
(3)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf96b6b2f38acb887341fc4d50588675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac02a054bd0771a56987af33454baaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae95e96ce568efee50145f8d017353df.png)
(1)求曲线C的方程,并说明曲线C是什么曲线;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e69866076dcff686a05e9e91e61e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a0a6891259bf27be2280c6b6ba7430.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a0a6891259bf27be2280c6b6ba7430.png)
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6 . 已知两点
,
,动点P在y轴上的摄影是H,且
,
(1)求动点P的轨迹方程;
(2)设直线
,
的两个斜率存在,分别记为
,
,若
,求点P的坐标;
(3)若经过点
的直线l与动点P的轨迹有两个交点为T、Q,当
时,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813f9a2814013e2407b5b1c216159359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd15503ee692f8286b0312f7c6f0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef239cf51dd5a3a60a2a3fcbce34708.png)
(1)求动点P的轨迹方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.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/90a802efc6b05133a91833e2f7074586.png)
(3)若经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8350efd6636002f417d721fc87a126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f813f28e3aa31932b470ed7920786f90.png)
您最近一年使用:0次
7 . 如图,在
正半轴上的
点有一只电子狗,
点有一个机器人,它们运动的速度确定,且电子狗的速度是机器人速度的两倍,如果同时出发,机器人比电子狗早到达或同时到达某点,那么电子狗将被机器人捕获,电子狗失败,这一点叫失败点,若
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/79ffdfa2-edc7-4c92-9619-5cc0cbe856f1.png?resizew=129)
(1)求失败点组成的区域;
(2)电子狗选择
正半轴上的某一点
,若电子狗在线段
上获胜,问点
应在何处?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/cfc95cefe2b670f447312d0805be2181.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/79ffdfa2-edc7-4c92-9619-5cc0cbe856f1.png?resizew=129)
(1)求失败点组成的区域;
(2)电子狗选择
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2019-11-11更新
|
197次组卷
|
2卷引用:上海市宝山区2018-2019学年高二下学期期末统考数学试题