1 . 在平面直角坐标系
中,抛物线
,点
,
,
为
上的两点,
在第一象限,满足
.
(1)求证:直线
过定点,并求定点坐标;
(2)设
为
上的动点,求
的取值范围;
(3)记△
的面积为
,△
的面积为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1354240a807d0da2b51a19e055140165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37df9dad3961893b22d6639c4311e267.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/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46cd485957ac7c628785ca04a60e1aaf.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e368d77f94bb058d2480f122f44ea366.png)
(3)记△
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa3a310c1f8a5af35dc3328d874e18e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21cbb1c2bcbcb8391ac5a879f2ae0.png)
您最近一年使用:0次
2021-10-08更新
|
995次组卷
|
7卷引用:上海市控江中学2022届高三上学期开学考数学试题
上海市控江中学2022届高三上学期开学考数学试题上海市控江中学2021届高三上学期12月月考数学试题上海市杨浦区控江中学2022届高三上学期第一次月考(9月)数学试题(已下线)模块12 圆锥曲线-2022年高考数学一轮复习小题多维练(上海专用)上海外国语大学附属外国语学校2022届高三上学期期中数学试题(已下线)专题9.7 圆锥曲线综合问题 2022年高考数学一轮复习讲练测(新教材新高考)(讲)(已下线)9.6 三定问题及最值(精练)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)
2021·上海浦东新·三模
2 . 设
,平面直角坐标系
内的直线
,
,分别与曲线
,交于相异的两点A、B.
(1)若
,求直线
的斜率;
(2)证明:直线
过定点M,并求出M的坐标;
(3)是否存在k,使得
在数值上等于
的
倍?若存在,求出所有满足条件的k,否则,证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4a45e79f51c7b5a9428f4cf2ab5c99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1b3b0015776b82a4a2a17f0fe1b2030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4901f4e3f251c349c79df46e26d05c3b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)是否存在k,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a711bf44ed64556c72fbb0e7f42c27f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
您最近一年使用:0次
名校
3 . 已知抛物线
过点
(
为非零常数)与
轴不垂直的直线
与C交于
两点.
(1)求证:
(
是坐标原点);
(2)AB的垂直平分线与
轴交于
,求实数
的取值范围;
(3)设A关于
轴的对称点为D,求证:直线BD过定点,并求出定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b960b158be4713fc02162d89c40f43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e016a11f57b944527154e1a137238e58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/926101582b7fd6705b0deecc69be8d43.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd93bd48b01d903241bce2208b7c288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)AB的垂直平分线与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454ed7cc4adcb10a02ee61fd7f231bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(3)设A关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次